A battery cell disassembling apparatus (100) and a battery cell disassembling method. The battery cell disassembling apparatus (100) comprises: a conveying belt (120), a cutting member (130), a bending member (140), and winding members (150); the conveying belt (120) is used for conveying battery cells (190) to facilitate streamlined input of the battery cells (190); the cutting member (130) is used for cutting the battery cells (190); the bending member (140) is used for bending and scattering the cut battery cells (190); and the winding members (150) are used for separating separators (191) and electrode sheets (192) in the bent and scattered battery cells (190). The cutting member (130), the bending member (140), and the winding members (150) are sequentially arranged in a conveying direction of the conveying belt (120), so that an ordered disassembling operation is carried out on the battery cells (190) on the conveying belt (120).
B23P 19/00 - Machines effectuant simplement l'assemblage ou la séparation de pièces ou d'objets métalliques entre eux ou des pièces métalliques avec des pièces non métalliques, que cela entraîne ou non une certaine déformation; Outils ou dispositifs à cet effet dans la mesure où ils ne sont pas prévus dans d'autres classes
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
B23P 23/00 - Machines ou agencements de machines réalisant des combinaisons déterminées de différentes opérations d'usinage, non couverts par une seule autre sous-classe
2.
EFFICIENT MULTI-CHANNEL ELECTRODIALYSIS DEVICE FOR SALT LAKE LITHIUM EXTRACTION
An efficient multi-channel electrodialysis device for salt lake lithium extraction, comprising a bottom plate (1), a supporting plate (2) and a base (4). The upper side of the bottom plate (1) is fixedly connected to the lower side of the supporting plate (2) and the lower side of the base (4), and a stirring mechanism (3) is fixedly connected to the upper side of the supporting plate (2). A preliminary electrodialysis mechanism (6) is fixedly installed on the upper side of the bottom plate (1), and a single electrodialysis mechanism (7) is fixedly connected to the lower portion of the outer surface of the preliminary electrodialysis mechanism (6).
A self-operating lithium extraction device for a salt lake. The device comprises an adsorption reaction mechanism (1), a feeding mechanism (2) and a supporting mechanism (3), wherein the feeding mechanism (2) is connected to the top of the adsorption reaction mechanism (1), the supporting mechanism (3) is fixedly connected to the bottom of the adsorption reaction mechanism (1), the adsorption reaction mechanism (1) comprises a reaction tank (11), a limiting plate (14) is fixedly connected to an inner wall of the reaction tank (11), a first partition (4) is arranged inside the reaction tank (11), and a second partition (5) is arranged below the first partition (4).
The present application provides a Prussian blue electrode material, a preparation method therefor, and an application thereof. The preparation method comprises the following steps: (1) mixing sodium ferrocyanide decahydrate with sodium salt, and dissolving to obtain a sodium-containing solution; (2) dropwise adding a transition metal salt solution into the sodium-containing solution obtained in the step (1) and reacting, and then sequentially performing aging treatment, separation, washing and drying to obtain an Fe-PBAs sample; and (3) soaking the Fe-PBAs sample obtained in step (2) in a fluorine-containing organic acid, then sequentially performing filtering and vacuum drying to obtain the Prussian blue electrode material. The Prussian blue electrode material of the present application has excellent electrical conductivity, the fluorine-containing organic acid reduces gaps in Prussian blue positive electrode material, and no reaction occurs with an organic electrolyte, improving the cycle performance of the battery.
Disclosed in the present application is an automatic detection apparatus for cascade utilization of waste batteries. The automatic detection apparatus comprises a conveying mechanism, a discharge mechanism, a moving mechanism and a detection platform, wherein the discharge mechanism is arranged on one side of the conveying mechanism, the detection platform is located between the conveying mechanism and the discharge mechanism, and the moving mechanism is arranged above the detection platform. The apparatus of the present application pushes and presses a pressing plate downwards by means of a fourth pneumatic telescopic rod, so as to cause a conductive contact plate to come into contact with a conductive stake on a lithium battery pack; then the apparatus measures, by means of a conductivity tester and an electrical cable, the conductivity of the conductive stake, which is in contact with the conductive contact plate, which is pressed downwards; and the apparatus determines the battery capacity of the lithium battery pack according to a conductivity value measured by means of the conductivity tester, thereby enabling the present apparatus to automatically measure the capacity of a waste battery.
A fenton sludge-based method for preparing a two-stage adsorption material. The method comprises: performing primary pyrolysis on fenton sludge powder to obtain a first-stage adsorption material; and after the first-stage adsorption material adsorbs magnesium ions, performing secondary pyrolysis to obtain a second-stage adsorption material, wherein the temperature of the primary pyrolysis is 600-900℃, the first-stage adsorption material has good adsorption activity on magnesium metal, and the second-stage adsorption material has good adsorption activity on phosphorus, thereby achieving highly-efficient comprehensive treatment of fenton sludge, magnesium-containing wastewater and phosphorus-containing wastewater.
B01J 20/02 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtration; Absorbants ou adsorbants pour la chromatographie; Procédés pour leur préparation, régénération ou réactivation contenant une substance inorganique
B01J 20/30 - Procédés de préparation, de régénération ou de réactivation
C02F 1/28 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par absorption ou adsorption
The present application relates to the technical field of wastewater treatment, and provides a phosphate removal resin regenerated waste liquid treatment method. According to the method of the present application, a persulfate is used as an oxidant, at least one of nickel powder, aluminum powder, and cobalt powder is used as a catalyst of oxidation reaction, oxidation is carried out by means of two stages of reaction kettles, the temperature of first-stage oxidation reaction is 85-95°Ϲ, and the temperature of second-stage oxidation reaction is 60-70°Ϲ, such that organophosphate in a phosphate removal resin regenerated waste liquid can be efficiently converted into a phosphorane under non-high-temperature and high-pressure conditions; and then precipitation and pressure filtration are carried out, so that the organophosphate in the phosphate removal resin regenerated waste liquid is removed to a great extent and the phosphate content in finally drained wastewater is less than or equal to 1.5 ppm.
The present application provides a wet-process phosphoric acid scale-dissolving agent, a preparation method therefor, and use thereof, and relates to the technical field of scale prevention. The wet-process phosphoric acid scale-dissolving agent of the present application comprises the following components in percentage by weight: 5%-15% of a descaling agent, 8%-13% of a dispersing agent, 0.5%-1% of a permeating agent, 0.1%-0.5% of a corrosion inhibitor, 0.3%-0.8% of a surfactant, and the balance of water. The descaling agent is sulfamate. The dispersing agent is a mixture of polyepoxysuccinic acid, polyaspartic acid and an acrylic acid-2-acrylamido-2-methylpropane sulfonic acid copolymer. According to the present application, the specific descaling agent, the dispersing agent, the permeating agent, the corrosion inhibitor and the surfactant are used and compounded, such that potassium fluosilicate, sodium silicofluoride, calcium sulfate and other scaling substances generated in the wet-process phosphoric acid production process are efficiently dissolved and removed, the dissolution rate of the scaling substances is greater than or equal to 45% at the time of 0.5 h, and the dissolution rate of the scaling substances is greater than or equal to 80% at the time of 4 h.
C01B 25/22 - Préparation par réaction de produits contenant un phosphate avec un acide, p.ex. procédé par voie humide
B08B 9/032 - Nettoyage de conduites ou de tubes ou des systèmes de conduites ou de tubes Élimination des bouchons par l'action mécanique d'un fluide en mouvement, p.ex. par effet de chasse d'eau
B08B 9/027 - Nettoyage de conduites ou de tubes ou des systèmes de conduites ou de tubes Élimination des bouchons
9.
CONTINUOUS LITHIUM EXTRACTION UNIT AND USE THEREOF
Disclosed in the present invention are a continuous lithium extraction unit and a use thereof, for use in continuous recovery and enrichment of lithium in an aqueous solution. The continuous lithium extraction unit comprises a cylindrical chamber; an anionic membrane, the anionic membrane being in movable contact with the side wall of the cylindrical chamber, the cylindrical chamber being divided into a first chamber and a second chamber, the side wall of the first chamber comprising a first electrode, the side wall of the second chamber comprising a second electrode, and the first electrode and the second electrode each comprising a lithium storing substance; and a transmission rod, the transmission rod controlling rotation of the cylindrical chamber. Further disclosed in the present invention is the use of the continuous lithium extraction unit.
C02F 1/469 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par des procédés électrochimiques par séparation électrochimique, p.ex. par électro-osmose, électrodialyse, électrophorèse
10.
SORTING DEVICE AND METHOD FOR RETIRED POWER BATTERIES
Disclosed in the present application are a sorting device and method for retired power batteries. The sorting device for retired power batteries comprises a supporting device (1); detection devices (2) are movably provided in the supporting device; a removing device (3) is movably connected to the lower portion of the supporting device (1); each detection device (2) comprises a plurality of reception box bodies (21); a sealing bottom plate (22) is movably connected to the bottom of each of the plurality of reception box body (21); a butt joint panel (23) is fixedly mounted on the lower surface of each sealing bottom plate (22).
A four-channel electrodialysis apparatus for lithium extraction from a salt lake, comprising an electrodialysis mechanism (1) and four desalting mechanisms (2). The electrodialysis mechanism (1) comprises a bottom plate (11). Dialysis boxes (13) are fixedly connected to the positions on the top surface of the bottom plate (11) respectively located outside the four desalting mechanisms (2). Ion exchange membranes (15) are fixedly embedded into the inner side walls of the four dialysis boxes (13), respectively. Each desalting mechanism (2) comprises an accommodating housing (22), and the inner side of the accommodating housing (22) adjacent to the ion exchange membrane (15) is provided with a vibration assembly (23). The vibration assembly (23) comprises two rolling wheels (231), two sides of each rolling wheel (231) are each provided with a rotating base (232), a first rotating shaft (239) is rotatably connected between the two rotating bases (232), the first rotating shaft (239) is fixedly connected to the rolling wheel (231), the side of the rolling wheel (231) adjacent to the ion exchange membrane (15) is provided with a ring groove (233), a corrugated block (238) is fixedly connected inside the ring groove (233), an arc block (236) is slidably connected inside the ring groove (233), a vibration rod (234) is fixedly connected to a side surface of the arc block (236), one end of the vibration rod (234) passes through a side wall of the dialysis box (13) and is fixedly connected to a vibration plate (235), a spring (237) is fixedly connected between an inner wall of the dialysis box (13) and the arc block (236), two inner walls of the dialysis box (13) are respectively provided with first sliding grooves (230) at the positions of the two rolling wheels (231), and the rolling wheels (231) are rollably connected to the first sliding grooves (230). A filter screen (21) is fixedly connected to the bottom of the accommodating housing (22).
A waste soft-pack power battery disassembly apparatus. The apparatus comprises a power battery accommodation apparatus (1), one side of the power battery accommodation apparatus having movably connected thereto an electrolyte draining apparatus (3), two sides of the power battery accommodation apparatus (1) each being provided with a splitting position adjustment apparatus (2), and one end of each splitting position adjustment apparatus (2) being movably connected to a component extraction apparatus (4).
B09B 3/30 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant un traitement mécanique
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
The present application provides a method for removing carbonate radicals from a lithium precipitation mother liquor. The method comprises: mixing a lithium precipitation mother liquor with nickel-cobalt-manganese wastewater for reaction, and removing carbonate radicals from the lithium precipitation mother liquor to prepare nickel-cobalt-manganese carbonate slag. According to the present application, in the process of removing the carbonate radicals from the lithium precipitation mother liquor, the pH value does not need to be adjusted, the use of an acid liquor or an alkali liquor is avoided, and the content of the carbonate radicals in the lithium precipitation mother liquor can be greatly reduced, so that the carbonate radicals in the lithium precipitation mother liquor are efficiently and simply removed at low cost. Moreover, the nickel-cobalt-manganese carbonate slag is prepared while the carbonate radicals are removed, and the nickel-cobalt-manganese carbonate slag can be used for preparing a ternary positive electrode material, so that the effect of recycling nickel, cobalt and manganese from the nickel-cobalt-manganese wastewater is achieved.
66]4- in waste Prussian-type sodium batteries, and thus avoid great pressure exerted on the environment by directly discarded Prussian-type sodium ion positive electrode materials, thereby protecting the ecological equilibrium. In addition, the produced Prussian-type sodium ion positive electrode material has good regeneration performance and thus can meet the commercial requirements.
3-xxy4-y4-y, where 0.048≤x≤0.105, and 0.024≤y≤0.21. In the aluminum-fluorine co-doped cobaltosic oxide provided in the present application, aluminum and fluorine are uniformly distributed, such that by means of the synergistic effect of aluminum and fluorine, a lithium cobalt oxide material prepared from the aluminum-fluorine co-doped cobaltosic oxide can reduce the crystal size change during the lithium deintercalation process, reduce the lattice stress and improve the structural stability; moreover, the material can resist the erosion of hydrofluoric acid in an electrolyte solution and has good cycling stability and thermal stability, thus further improving the electrochemical performance of a lithium battery.
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
16.
LITHIUM-RICH MANGANESE-BASED POSITIVE ELECTRODE MATERIAL WITH A DOUBLE-LAYER COATED SURFACE, AND PREPARATION METHOD THEREFOR AND USE THEREOF
955 as an inner-layer coating material and a cerium-aluminum oxide as an outer-layer coating material. By means of the preparation method comprising modifying with deionized water, doping with S2-955 as an inner layer and coating with a cerium-aluminum oxide as an outer layer, a large number of oxygen vacancies are introduced into the lithium-rich manganese-based positive electrode material, such that the lithium-rich manganese-based positive electrode material has good electrochemical performance.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/48 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p.ex. phosphates, silicates ou borates
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
17.
METHOD FOR MEASURING TOTAL PHOSPHORUS CONTENT OF NON-FERROUS METAL EXTRACTION WASTE LIQUID
A method for measuring the total phosphorus content of a non-ferrous metal extraction waste liquid, wherein the key is to use a ferrate solution for digestion. The standard redox potential of a ferrate is much higher than those of other inorganic oxidizing agents, so that organophosphorus in a test sample can be fully digested to ensure the accuracy of the total phosphorus content; in addition, a product obtained after ferrate reduction is a ferric hydroxide suspension having a flocculation effect, so that trace heavy metal ions, such as arsenides, sulfides and chromium compounds, in the test sample can be effectively removed, the turbidity and chromaticity of the test sample can be effectively reduced, and the test sample having high turbidity can be directly digested without pretreatment, exerting a synergistic effect of oxidation, flocculation, adsorption and precipitation. Furthermore, trace cobalt and nickel ions in the non-ferrous metal extraction waste liquid can catalyze the accelerated decomposition of the ferrate, so that adding excess ferrate solution does not affect the subsequent measurement.
G01N 21/33 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant la lumière ultraviolette
G01N 21/78 - Systèmes dans lesquels le matériau est soumis à une réaction chimique, le progrès ou le résultat de la réaction étant analysé en observant l'effet sur un réactif chimique produisant un changement de couleur
18.
METHOD FOR RECYCLING LITHIUM IRON PHOSPHATE BATTERY
The present application relates to the technical field of lithium iron phosphate battery recycling, and discloses a method for recycling a lithium iron phosphate battery. The present application employs a selective stepwise leaching process for lithium and copper-aluminum, thus preventing copper-aluminum impurities from entering into a leaching solution of lithium. The leaching solution of lithium may be directly precipitated to prepare product lithium carbonate, thus preventing lithium loss caused by the precipitation of the copper-aluminum impurities, and preventing the lithium recycling rate from being impacted thereby. According to the present application, iron phosphate and graphite from the second leaching residue are used as a negative electrode, lithium in lithium-precipitation tailings and wash water is enriched by using an electrodeposition method, and enriched lithium iron phosphate is again returned to a selective lithium leaching process. The process resolves the following problems present in a traditional process of lithium enrichment by evaporation crystallization followed by lithium precipitation with sodium carbonate: a. an acid needs to be added before evaporation crystallization, and the acid is consumed for carbonate removal; b. energy consumption is high in the evaporation crystallization; and c. sodium sulfate crystals precipitated during the evaporation process carry away some lithium salts, causing lithium loss and resulting in a lower overall lithium recycling rate.
The present invention provides a binary high-nickel sodium ion battery positive electrode material, a preparation method, and an application. The binary high-nickel sodium ion battery positive electrode material comprises: a sodium ion battery positive electrode particle material and an Ni-NaP layer coating the surface of the positive electrode particle material; mixing the sodium ion battery positive electrode particle material, a phosphate, and an organic adhesive, and sintering, and thus obtaining a binary high-nickel sodium ion battery positive electrode material, which can be applied to a sodium ion battery positive pole piece and to a sodium ion battery. In the binary high-nickel sodium ion battery positive electrode material prepared in the present invention, the Ni-NaP layer has relatively strong conductivity, is beneficial to improving particle surface conductivity, can improve the conductance rate of the positive electrode material, and promotes the transmission of ions between positive electrode particles.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
20.
LITHIUM IRON PHOSPHATE POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF
Disclosed are a lithium iron phosphate positive electrode material, a preparation method therefor, and an application thereof. The preparation method comprises the following steps: mixing an iron phosphate precursor, a lithium source and a Prussian blue compound, calcining in a reducing or inert atmosphere, cooling and acid leaching, and drying to obtain a product. The lithium iron phosphate positive electrode material obtained via preparation by the preparation method has excellent conductivity.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
C01B 32/05 - Préparation ou purification du carbone non couvertes par les groupes , , ,
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p.ex. phosphates, silicates ou borates
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
The present invention relates to the technical field of batteries, in particular to a spinel-phase lithium nickel manganate positive electrode material, a preparation method therefor, and a battery. The preparation method according to the present invention comprises: mixing a nickel-manganese compound precursor with a lithium source and an additive, and carrying out high-temperature calcination, annealing and crushing to obtain a spinel-phase lithium nickel manganate positive electrode material, wherein the additive has an electron-rich group. The spinel-phase lithium nickel manganate positive electrode material prepared by the preparation method of the present invention has a stable structure, may effectively inhibit side reactions between a surface thereof and an electrolyte and inhibit the dissolution of transition metals, and may consequently improve the cycling performance of the battery.
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
xYZZ. The preparation method comprises: continuously introducing a manganese salt solution, an oxidizing agent, a first dispersing agent and part of a precipitating agent into a base solution, heating same for reaction, and introducing a protective gas; and collecting materials that overflow from the precipitation reaction, aging the materials and washing same to obtain nanoscale manganous-manganic oxide, wherein the base solution comprises the other part of the precipitating agent and a second dispersing agent, and the precipitating agent contains a pyrophosphate. The phosphorus-doped manganous-manganic oxide of the present invention is nanoscale and can effectively inhibit the Jahn-Teller effect, such that the conductivity is improved.
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
23.
PREPARATION METHOD FOR LOW-DEFECT PRUSSIAN BLUE-TYPE POSITIVE ELECTRODE MATERIAL AND USE THEREOF
66]4-66]4-66]4-, such that the combination of the transition metal and the coordination water is avoided from the source, and the prepared Prussian blue-type positive electrode material has less coordination water and crystal water, and has better gram volume and cycling stability.
33 3-33) in the conductive modification solution may coordinate with transition metals or replace coordination water bound to transition metals, thus preventing the Prussian blue positive electrode material from absorbing water from the environment and producing new coordination water and crystallization water. Simultaneously, the reduction in coordination water may further reduce crystallization water. By means of the present method, boron may be uniformly doped in the Prussian blue positive electrode material, so as to increase the conductivity of the Prussian blue positive electrode material.
A membrane-based filter device that is used for extracting lithium from salt lake brines and facilitates automatic replacement of filter membranes. The filter device comprises a foot stand (1), a filter compartment (2), a support (6), a water output end (8), a coarse filter compartment (10) and a rear cover (11), wherein an upper side of the foot stand (1) is fixedly connected to a lower side of the filter compartment (2); the support (6) is fixedly connected to the upper side of the foot stand (1) and located on an outer side of the filter compartment (2); a filter membrane mechanism (3) is movably snap-fitted to the interior of the filter compartment (2); a lifting mechanism (5) is fixedly connected to the upper side of the foot stand (1); a sliding mechanism (4) is fixedly connected to the interior of the lifting mechanism (5); an inner side of the sliding mechanism (4) is movably snap-fitted to two ends of the filter membrane mechanism (3); and a position alignment mechanism (7) is fixedly connected to an upper side of the sliding mechanism (4). The use of the filter device can improve the filtering effect of a filter membrane and prolong the service life thereof.
Disclosed in the present application are a power battery factory site selection method and apparatus, the method comprising: on the basis of a predetermined power battery production planning solution, analyzing a relationship between factory building address parameters and the total amount of carbon emission generated by a power battery factory executing the power battery production planning solution, so as to establish a power battery factory carbon emission model; acquiring at least one pre-selected feasible factory building address; according to the geographic location of each feasible factory building address amongst the at least one feasible factory building address, and the power structure of and the climate of the area where each feasible factory building address is located, and by means of the power battery factory carbon emission model, respectively calculating the total amount of carbon emission generated by the power battery factory corresponding to each feasible factory building address; and selecting the feasible factory building address with the minimum total amount of carbon emission as a final site for building the power battery factory.
G06Q 10/06 - Ressources, gestion de tâches, des ressources humaines ou de projets; Planification d’entreprise ou d’organisation; Modélisation d’entreprise ou d’organisation
27.
METHOD FOR SEPARATING POLE PIECE AND BATTERY POWDER, AND POWER BATTERY DIRECTIONAL RECYCLING METHOD
33, supercritical carbon dioxide and a fluorine-containing organic carbide. Said method can separate a pole piece and battery powder while reducing damage to the pole piece, thereby preventing or reducing the danger in the prior art of dust explosion caused by crushing. The power battery directional recycling method comprises: carrying out solid-liquid separation on the positive electrode slurry obtained by means of separating the pole piece and the battery powder, preparing a solid-phase substance obtained from the solid-liquid separation into a battery material precursor, then mixing the battery material precursor with a lithium source, and calcining same to obtain a battery positive electrode material. Said method can achieve directional recycling and recovery of the power battery, and has the effects of lowering pollution and reducing carbon.
The present invention provides a method for preparing a polyphosphoric acid from wet phosphoric acid raffinate and an application thereof. The method comprises: carrying out reduced-pressure concentration at 85-90°C on a raffinate obtained after wet phosphoric acid extraction to obtain a primary concentrated solution, introducing chlorine gas into the primary concentrated solution for a reaction to obtain a reacted solution, and carrying out reduced pressure concentration on the reacted solution at 160-170°C to obtain a polyphosphoric acid. According to the present invention, a concentration process is first carried out on a raffinate so as to reduce the content of an organic solvent in the raffinate, and some water is evaporated in the concentration process; chlorine gas is introduced into the solution to generate hydrochloric acid and hypochlorous acid, thereby reducing the viscosity of the material; and finally, heating is carried out to implement reduced pressure concentration synthesis so as to obtain polyphosphoric acid. The finished polyphosphoric acid meets industrial standards with regards to TOC and fluorine content, making same directly suitable as a synthetic raw material for ammonium polyphosphate. The product complies with requirements for the use of flame retardant materials. The present invention utilizes wet phosphoric acid raffinate as the raw material for producing polyphosphoric acid, breaks through the bottleneck constraining the development of phosphoric acid, and has significant cost advantages.
The present application discloses a brine refining device for extracting lithium from a salt lake. The device comprises: a separation cylinder, a first nanofiltration membrane element, a second nanofiltration membrane element and a third nanofiltration membrane element; a square frame is provided on each of two sides of the separation cylinder; a first clamping piece is provided on one side of each of the first nanofiltration membrane element, the second nanofiltration membrane element and the third nanofiltration membrane element; a second clamping piece is provided on the other side of each of the first nanofiltration membrane element, the second nanofiltration membrane element and the third nanofiltration membrane element; a securing base is provided on one side of each of the first clamping piece and second clamping piece, and a connecting slide plate is securely mounted to one side of each securing base.
The present invention belongs to the technical field of energy storage materials. Disclosed are an iron-coated and boron-doped high-nickel positive electrode material, a preparation method therefor, and use thereof. The preparation method comprises the following steps: mixing a high-nickel positive electrode material precursor, a lithium source, and a boron source, grinding, drying, and carrying out primary calcination to obtain a boron-doped high-nickel positive electrode material; dispersing the obtained boron-doped high-nickel positive electrode material in a solution, adding a soluble ferric salt and a precipitant, and enabling iron to generate a precipitate to be attached to the surface of the boron-doped high-nickel positive electrode material; and carrying out secondary calcination to obtain the iron-coated and boron-doped high-nickel positive electrode material. The iron-coated and boron-doped high-nickel positive electrode material provided by the present invention has an inner core and a coating layer. The bonding strength of the coating layer and the inner core is high, the material structure is stable, and the battery prepared by using this material has excellent cycle performance. The preparation method provided by the present invention has a simple process and can achieve industrial mass production.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p.ex. LiTi2O4 ou LiTi2OxFy
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p.ex. liants, charges
H01M 4/131 - PROCÉDÉS OU MOYENS POUR LA CONVERSION DIRECTE DE L'ÉNERGIE CHIMIQUE EN ÉNERGIE ÉLECTRIQUE, p.ex. BATTERIES Électrodes Électrodes composées d'un ou comprenant un matériau actif Électrodes pour accumulateurs à électrolyte non aqueux, p.ex. pour accumulateurs au lithium; Leurs procédés de fabrication Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p.ex. LiCoOx
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
31.
METHOD FOR CONTINUOUSLY PREPARING IRON PHOSPHATE AND USE
The present invention belongs to the technical field of lithium-ion battery materials. Disclosed are a method for continuously preparing iron phosphate and use. The method for continuously preparing iron phosphate comprises the following steps: preparing a solution containing iron and phosphorus; adding a precipitant to a part of the solution containing iron and phosphorus, then dropwise adding an oxidizing agent and the residual solution containing iron and phosphorus for reaction, adding an alkali liquor during the reaction to control the pH value of the reaction system to be 0.8-2.8, and obtaining an iron phosphate slurry by means of an overflow method; and aging the iron phosphate slurry, carrying out solid-liquid separation to obtain an iron phosphate filter cake, and washing and dehydrating the iron phosphate filter cake to obtain iron phosphate. Iron phosphate particles continuously prepared according to the present invention are uniform, and have proper particle size, stable physicochemical properties, and low impurity content; particularly, the content of S is less than 0.23%, and is as low as 0.06%. Moreover, the production efficiency is high, the productivity of iron phosphate can be remarkably improved and is 1.78 times as much as that in an intermittent process, and the cost is lower.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p.ex. phosphates, silicates ou borates
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
32.
ALUMINUM-DOPED COBALT CARBONATE AND PREPARATION METHOD THEREFOR
Disclosed is a preparation method for aluminum-doped cobalt carbonate. The preparation method comprises the following steps: (1) liquid preparation: dissolving a soluble cobalt salt, a soluble aluminum salt and a dispersing agent in water to obtain molten metal A, dissolving a soluble cobalt salt and a soluble aluminum salt in water to obtain molten metal B, preparing bicarbonate as a base solution, and preparing carbonate as a precipitant; (2) reaction I: adding the molten metal A and the precipitant into the base solution in parallel, and reacting to generate a mixed system containing an aluminum-doped cobalt carbonate crystal; and (3) reaction II: stopping adding the molten metal A into the mixed system when the D50 of the aluminum-doped cobalt carbonate crystal generated in step (2) reaches up to 14-15 μm, simultaneously adding the molten metal B and the precipitant into the mixed system in parallel, reacting, and carrying out solid-liquid separation when the D50 of the generated aluminum-doped cobalt carbonate crystal reaches up to 18-20 μm to obtain aluminum-doped cobalt carbonate. The aluminum-doped cobalt carbonate prepared by the preparation method has uniform size, no small particles, and uniform aluminum element distribution.
The present application discloses a screening method for echelon use of waste batteries, comprising: standard static inspection; testing a capacity deviation reference quantity P of battery packs; screening for qualified battery packs according to the capacity deviation reference quantity P; carrying out self-discharge screening on batteries; and carrying out battery recombination.
46466]. The recovery method of the present application can effectively separate and extract transition metal elements in the Prussian material which are not coordinated with cyanide without producing cyanide ions and hydrocyanic acid during the process, and the recovered solution may be further processed into raw material for synthesizing the Prussian positive electrode material. The recovery method can treat the Prussian positive electrode material in waste sodium batteries on a large scale, and the treatment process is non-toxic, harmless, and straightforward. The recovery method exhibits favorable economic benefits.
Disclosed herein are an aluminum-nickel co-doped cobalt carbonate precursor, a preparation method therefor, and use thereof, and the present application belongs to the technical field of lithium-ion batteries. In the present application, a spherical cobalt carbonate seed crystal with good Al doping uniformity is first prepared by using a cobalt salt solution, an aluminum salt solution, and a high-concentration ammonium hydrogen carbonate solution; the cobalt salt solution, a nickel salt solution, the aluminum salt solution, and a low-concentration ammonium hydrogen carbonate solution are then added; and a sheet-shaped aluminum-nickel co-doped cobalt carbonate precursor is obtained. The preparation method not only reduces the low-capacity risk caused by simply improving the Al content and the risk of nucleation in the later stage of the synthesis process, but also improves the yield of the product and the distribution uniformity of an aluminum-nickel element in the aluminum-nickel co-doped cobalt carbonate precursor.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
36.
RECOVERY METHOD FOR PRUSSIAN POSITIVE ELECTRODE MATERIAL AND MANGANESE-BASED PRUSSIAN WHITE POSITIVE ELECTRODE MATERIAL PREPARED THEREBY
A recovery method for a Prussian positive electrode material and a manganese-based Prussian white positive electrode material prepared by using the method, which belong to the technical field of battery recovery. The recovery method for a Prussian positive electrode material comprises: soaking a waste Prussian positive electrode material in an acidic solution, reacting same under boiling conditions to precipitate out ferrous ions and cyanogen, and then obtaining ferric hydroxide and a recovery solution by means of an oxidative hydrolysis effect; and furthermore, adjusting the pH value of the recovery solution, such that the metal ions and the cyanogen in the recovery solution are subjected to a complexing reaction to regenerate metal cyanate, adding a complexing agent and a soluble metal salt for co-precipitation, and regenerating a high-purity Prussian material. The recovery method has simple operation steps; and the final product has a high yield and a high purity, and is safe and non-toxic.
An annual carbon emission amount estimation method and apparatus for a power battery. The method comprises inputting acquired annual sales data of new energy vehicles into a pre-trained annual power battery production prediction model, so as to allow the pre-trained annual power battery production prediction model to output an annual power battery prediction production quantity; inputting the annual power battery prediction production quantity into a pre-trained power battery weight classification model, so as to allow the pre-trained power battery weight classification model to output, on the basis of different total weights of single power batteries, first-weight power battery prediction production quantities corresponding to various total weights; and acquiring first carbon emission amounts corresponding to the first-weight power battery prediction production quantities, and integrating all the first carbon emission amounts to obtain an annual carbon emission amount.
G06Q 10/04 - Prévision ou optimisation spécialement adaptées à des fins administratives ou de gestion, p. ex. programmation linéaire ou "problème d’optimisation des stocks"
G06Q 10/0639 - Analyse des performances des employés; Analyse des performances des opérations d’une entreprise ou d’une organisation
G06N 3/0442 - Réseaux récurrents, p.ex. réseaux de Hopfield caractérisés par la présence de mémoire ou de portes, p.ex. mémoire longue à court terme [LSTM] ou unités récurrentes à porte [GRU]
Disclosed are a preparation method for rare earth element-doped cobalt carbonate and use thereof. An ammonium bicarbonate solution is used as a base solution; an ammonium bicarbonate solution and a mixed salt solution of a cobalt salt and a rare earth salt are added into the base solution in parallel for a reaction; an obtained solid material is placed in an ammonium carbonate solution to be soaked; the soaked solid material is used as a seed crystal; and a mixed salt solution and an ammonium bicarbonate solution are added in parallel for a reaction to obtain the rare earth element-doped cobalt carbonate. As rare earth elements are doped, a material structure is stabilized, the impurity content is also reduced, and the specific capacity and the cycle performance of a positive electrode material are improved.
The present invention provides a method for feeding nickel, cobalt, and manganese metal liquids, comprising: respectively preparing three wet liquids; on the basis of an intelligent feeding system, performing calculation by means of a calculation model to respectively obtain actual preparation volumes required for a first wet liquid, a second wet liquid and a third wet liquid in actual preparation; mixing the first wet liquid, the second wet liquid and the third wet liquid according to the actual preparation volumes of the wet liquids to obtain a mixed liquid; measuring the actual concentrations of nickel, cobalt, and manganese in the mixed liquid; and according to the actual concentrations of nickel, cobalt, and manganese and preset standard concentrations, determining whether the feeding of nickel, cobalt, and manganese metal liquids is completed. According to the method for feeding nickel, cobalt, manganese metal liquids of the present invention, manual calculation work in a conventional method is replaced by the intelligent feeding system on a computer side, thereby reducing calculation errors caused by manual calculation, improving the feeding efficiency, improving the feeding accuracy, improving the output efficiency in the batching process, and providing convenience for the feeding of nickel, cobalt, and manganese metal liquids.
Disclosed in the present invention is a waste ternary positive electrode material reclaiming method. The method comprises the following steps: (1) mixing a waste ternary positive electrode material with an acid for activation; (2) mixing the activated positive electrode material with a lithium source solution, carrying out lithium replenishing under the conditions of pressurizing and heating, and annealing in an inert atmosphere the lithium-replenished positive electrode material; (3) mixing the annealed positive electrode material, a nickel source, a cobalt source, a manganese source, a fluoride and water to obtain a mixture, then carrying out spray granulation to obtain an NCM precursor, and calcining the NCM precursor in the presence of oxygen to obtain a calcined material; and (4) using porous graphene loaded with coating particles to carry out liquid-phase pre-coating on the calcined material, and calcining the obtained pre-coated material in the presence of oxygen to obtain a coated ternary positive electrode material. The present invention effectively improves the purity, the structure stability and the electrochemical performance of reclaimed ternary positive electrode materials by means of annealing, doping, gradient calcination and coating.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
41.
TERNARY POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, AND LITHIUM ION BATTERY
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p.ex. liants, charges
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
43.
METHOD FOR PREPARING SEMI-HYDRATED GYPSUM POWDER BY DYNAMICALLY ROASTING PURIFIED ARDEALITE
The present invention provides a method for preparing a semi-hydrated gypsum powder by dynamically roasting purified ardealite, and relates to the technical field of waste recovery. The method uses a dynamic roasting device to carry out dynamic roasting, and comprises the following steps: feeding purified ardealite into a thoroughly preheated dynamic roasting device from a feed port; adjusting a drying reaction gas introduced into a drying reaction section until the temperature of the drying reaction section is 180-220°C, and reacting same for 10-30 min to remove free water; adjusting a roasting reaction gas introduced into a roasting reaction section until the temperature of the roasting reaction section is 120-160°C, and reacting same for 30-60 min to remove half of the crystal water; and then adjusting a cooling reaction gas introduced into a cooling reaction section until the temperature of the cooling reaction section is 60-120°C, and reacting same for 15-30 min to cool the gypsum, thereby preparing a semi-hydrated gypsum powder. In the present invention, a coordinated regulation mechanism for efficiently drying and dewatering ardealite can be established, energy consumption can be reduced, and the pass rate of semi-hydrated gypsum products can be increased.
Disclosed in the present application is a lithium battery cell disassembling device. The lithium battery cell disassembling device comprises a disassembling mechanism and a recycling mechanism, wherein the disassembling mechanism is mounted on the recycling mechanism, the recycling mechanism comprises a storage box, two mounting blocks are respectively fixed to a front surface and a rear surface of the storage box, a box cover is mounted at the top of the storage box, two groups of symmetrical filter screens are slidably embedded into the top of the storage box, the number of each group of filter screens is two, connecting pipes fixedly respectively penetrate two sides of the storage box, three-way pipes are respectively mounted at inlet ends of each of the two connecting pipes, and hollow blocks respectively fixedly penetrate two inlet ends of each of the three-way pipes.
The present application discloses a power battery recycling amount prediction method and apparatus. The method comprises: acquiring carbon emission data of a power battery; and inputting the carbon emission data into a power battery recycling prediction model, and outputting a power battery recycling amount. Constructing the power battery recycling prediction model comprises: acquiring historical carbon emission data of the power battery and a power battery recycling amount corresponding to the historical carbon emission data, and using the historical carbon emission data and the power battery recycling amount corresponding to the historical carbon emission data as first training data; and training a constructed initial power battery recycling prediction model according to the first training data, and outputting a trained power battery recycling prediction model.
G06Q 10/04 - Prévision ou optimisation spécialement adaptées à des fins administratives ou de gestion, p. ex. programmation linéaire ou "problème d’optimisation des stocks"
DD(101)(102)(001)(101)(102)(001)(001) is a grain size corresponding to a crystal plane of (001). The positive electrode material prepared from the positive electrode material precursor has excellent cycling performance and relatively high first discharge capacity.
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p.ex. LiTi2O4 ou LiTi2OxFy
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
47.
SLUDGE-BASED HEXAVALENT CHROMIUM COMPOSITE ADSORBENT AND PREPARATION METHOD THEREFOR
2233 + can be formed by means of protonation under acidic conditions, and the selective adsorption of Cr(VI) is enhanced by means of ion exchange and electrostatic attraction.
B01J 20/10 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtration; Absorbants ou adsorbants pour la chromatographie; Procédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant de la silice ou un silicate
B01J 20/30 - Procédés de préparation, de régénération ou de réactivation
C02F 1/28 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par absorption ou adsorption
C02F 101/22 - Chrome ou composés du chrome, p.ex. chromates
48.
FERROPHOSPHORUS LITHIUM-ION BATTERY POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Disclosed are a ferrophosphorus lithium-ion battery positive electrode material, and a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) mixing a water-soluble manganese salt solution with a water-soluble pyrophosphate solution, adding acid liquid to adjust the pH to acidic, then adding a water-soluble iron salt solution for undergoing a reaction to obtain a mixed solution; (2) mixing the mixed solution obtained in step (1) with an iron source, a lithium source, and a carbon source to form a mixture, then drying the mixture to obtain a dry material; and (3) calcining the dry material obtained in step (2) under an inert gas to obtain a ferrophosphorus lithium-ion battery positive electrode material. The ferrophosphorus lithium-ion battery positive electrode material prepared by using the preparation method has relatively high specific capacity and cycle performance.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p.ex. phosphates, silicates ou borates
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
49.
METHOD FOR RECYCLING LITHIUM FROM ELECTROLYTE OF LITHIUM ION BATTERY
Disclosed in the present invention is a method for recycling lithium from an electrolyte of a lithium ion battery, comprising: mixing a waste electrolyte and an extracting agent and then layering same to obtain an upper organic phase having a density of not higher than 1.07 g/cm3and a lower lithium-loaded phase having a density of 1.15-1.5 g/cm3. The waste electrolyte comprises lithium ions and an ester organic solvent; the extracting agent comprises an aqueous solution of salt and a solvent; the solvent comprises at least one of ethanol and methanol; the upper organic phase comprises the ester organic solvent; the lithium-loaded phase comprises water. The method for recycling lithium of the present invention solves the problem that carbonic ester in the electrolyte is difficult to layer and separate after being mixed with water.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
B09B 3/80 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant une étape d'extraction
Provided are a preparation method and use of lithium manganese iron phosphate. Taking an acidic ferrophosphorus solution as a base solution, the acidic ferrophosphorus solution, a phosphorus-manganese pre-mixed solution, and an alkali solution are added in a parallel flow for a reaction, wherein the phosphorus-manganese pre-mixed solution is formed by a disodium dihydrogen pyrophosphate solution and a manganese salt solution which are pre-mixed via a pipeline mixer, and then enters a reaction system; an obtained solid is washed and dehydrated to obtain a first solid material; the first solid material is mixed with a lithium source and water for a hydrothermal reaction; a carbon source is added for spray drying; calcination is performed, and then lithium manganese iron phosphate is obtained. According to the present invention, a lithium manganese iron phosphate anode material in which phosphorus:(iron + manganese) = 1:1 and iron and manganese are uniformly mixed can be prepared. The material has a relatively high specific capacity and cycle performance.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p.ex. phosphates, silicates ou borates
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
51.
METHOD FOR PREPARING LITHIUM HYDROXIDE BY RECYCLING LITHIUM SULFATE FEED LIQUID
22 is added to lithium carbonate to generate barium sulfate, which is mixed with lithium carbonate after solid-liquid separation, and in the subsequent causticization reaction, the barium sulfate exists in a solid form in the causticization slag, such that the content of sulfur in a lithium hydroxide product at the back end can be effectively reduced.
Disclosed in the present invention are a method for preparing lithium iron phosphate from a nickel-iron alloy and the use thereof, which belong to the technical field of the preparation of a lithium iron phosphate material. In the present application, a nickel-iron alloy is leached using a combination of an organic acid and an oxidant, the reaction conditions are mild, the problems of high acidity, generation of a large amount of wastewater, great investment in equipment, high probability of releasing hydrogen ions, etc., existing in current leaching of a nickel-iron alloy with an inorganic acid are solved, and the leaching process produces no other impurities and is less corrosive to the equipment; and an iron salt and a nickel salt are precipitated in steps by using an organic precipitant, wherein an iron salt precipitate can be directly used in the preparation of lithium iron phosphate, and a nickel salt precipitate can be used as a nickel source for the subsequent preparation of a ternary positive electrode material. The preparation method of the present application reduces the recovery cost of a nickel-iron alloy, can produce certain economic benefits, and has prospects with regard to industrial application.
Disclosed are a high-nickel ternary precursor, a preparation method therefor, and use thereof. The preparation method comprises the following steps: separately adding a metal salt, ammonia water, and a precipitant into a base solution, which contains a precipitant and ammonia water and has an oxygen content of less than 1%, for a coprecipitation reaction to prepare the high-nickel ternary precursor. The coprecipitation reaction comprises: introducing protective gas first for a reaction, and then introducing oxygen-containing gas for a reaction, wherein the temperature of the coprecipitation reaction is 25-40 °C, and the concentration of ammonia water is 0.5-2.5 g/L. According to the preparation method in the present invention, the base solution with an oxygen content of less than 1% is used and nitrogen is introduced for nucleation in the early stage of the reaction, such that an agglomeration problem in the early stage of the reaction is alleviated. Primary particles can be refined at an extremely low ammonia concentration in the whole preparation process. A relatively low reaction temperature is adopted in the present invention, which has a positive effect on refining primary particles in one aspect, and can avoid secondary nucleation in a low-ammonia environment in another aspect.
Disclosed in the present invention are a method for preparing a lithium manganese iron phosphate positive electrode material by means of spray combustion and the use thereof. The method comprises: mixing and dissolving a manganese source, an iron source and a phosphorus source in an organic solvent to obtain an organic solution containing phosphorus, iron and manganese; then adding a surfactant and a combustion improver; subjecting the resulting mixed solution to spray combustion; mixing the resulting solid material with a lithium source and water, subjecting same to a hydrothermal reaction, further adding a carbon source thereto, and performing spray drying; and calcining same to obtain lithium manganese iron phosphate. In the present invention, the generation of a manganese iron phosphate precipitate is avoided by mixing and dissolving a phosphorus source, a manganese source and an iron source in an organic solvent, and corresponding iron phosphate and manganese pyrophosphate are obtained by means of a spray combustion reaction, such that iron and manganese are more evenly mixed, and the specific capacity and the cycle performance of the material are improved.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p.ex. phosphates, silicates ou borates
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
55.
PREPARATION METHOD AND USE OF BISMUTH-BASED CATHODE MATERIAL
Disclosed are a preparation method and use of a bismuth-based cathode material, and belongs to the technical field of inorganic material preparation and nano energy. The preparation method for the bismuth-based cathode material provided by the present invention comprises preparing an aqueous solution containing bismuthate; adjusting the pH of the aqueous solution to 11-13; and carrying out a hydrothermal reaction. The bismuth-based cathode material prepared by the described preparation method can effectively improve the electrochemical performance of the obtained bismuth-based cathode material. The present invention further provides the bismuth-based cathode material prepared by the described preparation method and corresponding use of the bismuth-based cathode material.
H01M 4/131 - PROCÉDÉS OU MOYENS POUR LA CONVERSION DIRECTE DE L'ÉNERGIE CHIMIQUE EN ÉNERGIE ÉLECTRIQUE, p.ex. BATTERIES Électrodes Électrodes composées d'un ou comprenant un matériau actif Électrodes pour accumulateurs à électrolyte non aqueux, p.ex. pour accumulateurs au lithium; Leurs procédés de fabrication Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p.ex. LiCoOx
H01M 4/485 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques d'oxydes ou d'hydroxydes mixtes pour insérer ou intercaler des métaux légers, p.ex. LiTi2O4 ou LiTi2OxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
H01M 10/054 - Accumulateurs à insertion ou intercalation de métaux autres que le lithium, p.ex. au magnésium ou à l'aluminium
56.
SURFACE-COATED AND MODIFIED COBALTOSIC OXIDE, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Provided in the present disclosure are surface-coated and modified cobaltosic oxide, and a preparation method therefor and the use thereof. The preparation method comprises: (1) subjecting cobalt carbonate to a surface hydroxylation treatment to obtain hydroxycobalt-coated cobalt carbonate; (2) mixing a metal salt and a complexing agent for a complexation reaction to obtain a complexed metal salt; (3) mixing the hydroxycobalt-coated cobalt carbonate, the complexed metal salt and a grafting initiator for a grafting reaction to obtain metal-ion-coated cobalt carbonate; and (4) sintering the metal-ion-coated cobalt carbonate to obtain the surface-coated and modified cobaltosic oxide. In the present application, the surface of cobalt carbonate is subjected to a hydroxylation treatment, and a metal salt subjected to a complexing treatment is added thereto for a grafting reaction, making a coating layer generated by the metal salt and hydroxycobalt on the surface of the cobalt carbonate have the same lines, such that a non-compact metal oxide coating layer with a flower-like structure is formed on the surface of cobaltosic oxide, the surface activity is improved, and effective mixing with a lithium salt is facilitated; therefore, the electrochemical performance of a lithium cobalt oxide battery is improved.
An automobile power battery management and control method and system. The method comprises: obtaining a charging service record and a power battery state of a target vehicle; confirming, according to the charging service record, a charging device, a charging period and a charging amount each time the target vehicle uses the charging service in a preset time period, and obtaining a power distribution network carbon emission reduced amount for all charging devices completing the unit charging amount in different charging periods; screening out the charging time period with minimum power distribution network carbon emission reduced amount as an optimal device charging time period; and in response to the target vehicle passing the charging device in the optimal device charging time period and the remaining state of charge of the power battery being less than a first threshold, sending a charging instruction to the target vehicle.
A power battery gradient utilization screening method and apparatus, and a device and a storage medium. The method comprises: acquiring in real time an infrared image in a charging process of a battery pack that is collected by a long-wave infrared instrument, wherein the battery pack is a retired battery pack (step 101); performing gridding processing on infrared images at a plurality of different moments to obtain a gridded infrared image corresponding to the infrared image at each moment, and determining a root-mean-square temperature of each grid in the gridded infrared image at each moment to obtain root-mean-square temperatures of each grid at the plurality of different moments (step 102); and acquiring an average temperature of the infrared image at each moment, and according to the root-mean-square temperatures of each grid at the plurality of different moments and an average temperature of the infrared image to which each grid belongs, determining whether a battery cell corresponding to each grid meets standards, wherein the battery cell that meets standards is used for gradient utilization (step 103).
G01R 31/367 - Logiciels à cet effet, p.ex. pour le test des batteries en utilisant une modélisation ou des tables de correspondance
G01R 31/396 - Acquisition ou traitement de données pour le test ou la surveillance d’éléments particuliers ou de groupes particuliers d’éléments dans une batterie
Disclosed in the present invention are a method for recycling a positive electrode material from scrapped positive electrode sheets by desorption and an application. The method comprises the following steps: (1) placing scrapped positive electrode sheets in a reaction vessel, and filling the reaction vessel with an initiator under a closed condition for treatment; (2) filling the reaction vessel with chlorine gas under the closed condition for treatment; (3) soaking the scrapped positive electrode sheets treated in step (2) in an organic solvent, and sieving to obtain aluminum foils and slurry; and (4) filter-pressing the slurry obtained in step (3) to obtain a filtrate and filter residues, drying the filter residues and then pyrolyzing same to obtain a positive electrode material. The method can effectively improve the separation effect of a positive electrode material and aluminum foils.
Disclosed in the present invention is a recycling method for positive electrode paste of spent lithium-ion batteries, the recycling method comprising the following steps: (1) crushing positive electrode paste of spent lithium-ion batteries in a crushing and pyrolysis device, introducing a heated inert gas into the crushing and pyrolysis device at the same time, bringing the inert gas into contact with the positive electrode paste of the spent lithium-ion batteries, and then allowing same to flow through a condenser for condensation and liquid discharging; (2) heating a crushed material obtained by crushing the positive electrode paste of the spent lithium-ion batteries in step (1), stopping the introduction of the inert gas and introducing an oxygen-containing gas instead at the same time, bringing the oxygen-containing gas into contact with the crushed material, and then allowing same to flow through a waste gas treatment system to receive a treatment; and (3) discharging the treated crushed material in step (2) to obtain positive electrode material particles. The recycling method for positive electrode paste of spent lithium-ion batteries can better realize the recycling of NMP.
The present application discloses an apparatus for separating battery cells of a module, comprising a workbench. The workbench is provided a pushing unit configured to push a module to horizontally move forward in an arrangement direction of battery cells, and positioning units for positioning the forward movement direction of the module. The workbench is further provided with a pressure applying unit at the front end of the forward movement direction of the module. The pressure applying unit comprises a pressure applying driving member and a pressure applying plate transmittingly connected to the pressure applying driving member. The pressure applying plate is configured to apply a vertical pressure to a battery cell located at the foremost end in the module. A fixing unit is further arranged on the workbench. The fixing unit is configured to fix the module when the pressure applying unit separates the battery cells.
Disclosed in the present application is a battery module disassembling apparatus, which comprises a disassembling case, and a base is arranged at the bottom of the disassembling case. The disassembling case has an inverted U-shaped structure, a driving member being arranged on the base at the recessed portion of the disassembling case. A clamping mechanism is arranged in the disassembling case, the clamping mechanism being connected to the driving member. The disassembling case comprises a housing and side covers symmetrically arranged on the housing, and a mounting frame is movably arranged on the inner wall of the housing between the side covers. A water jet cutting member and a liquid extraction assembly connected to the water jet cutting member are arranged at the bottom of the mounting frame. The water jet cutting member comprises a stripping member, a water jet cutter, a positioning member and a connection member.
A lithium battery shell disassembly apparatus. The disassembly apparatus comprises a disassembly body, wherein one end of the disassembly body is provided with a material guide plate inclined downwards; and two rotary clamping mechanisms, a cutting mechanism, two guide mechanisms, a collecting frame I, a classifying mechanism and a collecting frame II are arranged inside the disassembly body. The two rotary clamping mechanisms and the two guide mechanisms are all symmetrically arranged relative to the material guide plate, and the rotary clamping mechanism is fixed between the material guide plate and the guide mechanism; the cutting mechanism is slidably arranged between the two guide mechanisms and is located at one side of the rotary clamping mechanism; and the classifying mechanism is arranged right below the lowest point of the material guide plate. The cutting mechanism descends to disassemble, by means of cutting, a single-side shell of a lithium battery to be disassembled, and then the cutting mechanism ascends and resets to drive the fixed lithium battery to automatically turn over, thereby solving the problem of tedious operations caused by traditional disassembly apparatuses requiring manual disassembly or using additional mechanical structures to turn over lithium batteries, and increasing the disassembly speed of lithium battery shells.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
B23D 51/00 - Machines à scier ou dispositifs de sciage à lames droites, caractérisés uniquement par la structure d'organes particuliers; Moyens de support ou d'attache des outils qui, couverts par le présente sous-classe, sont fixés à leur monture à leurs deux extrémités
B23D 59/00 - Dispositifs annexes spécialement conçus pour les machines à scier ou les dispositifs de sciage
B23D 51/04 - Machines à scier ou dispositifs de sciage à lames droites, caractérisés uniquement par la structure d'organes particuliers; Moyens de support ou d'attache des outils qui, couverts par le présente sous-classe, sont fixés à leur monture à leurs deux extrémités des dispositifs d'alimentation, de positionnement, de serrage ou de rotation des pièces à usiner
64.
RECYCLING METHOD FOR WASTE PRUSSIAN SODIUM BATTERY POSITIVE ELECTRODE MATERIAL, AND USE
66]4-, wherein the molar ratio of the separated Prussian sodium positive electrode material to an organic acid in the organic acid solution is (7-10):1. According to the solution, the operation steps are simple, it is not needed to introduce a reagent having high toxicity or causing a violent reaction, and the transition metal ions, sodium ions, and ferrocyanide in the Prussian sodium positive electrode material can be simultaneously recycled and separated. The present application further discloses a method for preparing a Prussian sodium positive electrode material from a product obtained by the recycling method.
Disclosed are a method and a device for battery pack discharging, and a battery pack disassembly method. The method comprises: performing quick freezing treatment on a battery pack to be disassembled, and performing a destructive operation on the battery pack to be disassembled during the quick freezing treatment, such that a crack permitting the permeation of a cooling liquid is formed in a housing of a battery cell inside the battery pack to be disassembled; flushing the battery pack to be disassembled after the quick freezing with a flushing liquid at a set temperature, causing a reaction to occur in the battery pack to be disassembled, the set temperature being greater than 0°C; and performing a metal extraction operation on the liquid flowing out from the flush. Since a crack permitting the permeation of the cooling liquid is formed in the housing of an internal battery cell after squeezing the battery pack which has undergone quick freezing, such that the interior of the battery cell is effectively cooled down, and a disassembly product reacts violently after being soaked, flushed and warmed up in the flushing liquid, generated gas carrying the contents of the battery cells into the flushing liquid, the contents of the battery cells can be effectively separated, and the battery cells can be discharged safely and effectively.
Disclosed in the present invention is a phosphogypsum recovery method. The recovery method comprises the following steps: mixing phosphogypsum with carbonate for primary acidolysis, removing floating foam, performing secondary acidolysis, and then performing filter pressing and washing to obtain purified phosphogypsum. According to the phosphogypsum recovery method in the present invention, after recovery of phosphogypsum, performance indexes of the phosphogypsum are remarkably improved compared with those of the phosphogypsum before treatment, wherein the soluble phosphorus of the phosphogypsum is decreased to 0.016% or below, the total phosphorus is decreased to about 0.1%, the pH value of a gypsum leaching solution is increased from 1-2 to 6-7, the gypsum leaching solution can be directly discharged without treatment, the content of Mg, Na, Fe, K, Al and organic carbon is greatly reduced, the gypsum whiteness is increased from 22.71 to about 78, the purification degree of gypsum is far higher than that of conventional water washing and acidolysis processes, and the treated phosphogypsum has a quality index superior to the related requirements of building gypsum powder standards, and can be directly used as building gypsum.
Disclosed are a battery pack disassembling method and device. The battery pack disassembling method comprises: within a first preset time period, performing rapid-freezing cooling treatment on a battery pack to be disassembled, so that said battery pack is cooled to a first preset temperature; pressing the cooled battery pack, so that battery cells of said battery pack are broken; placing said battery pack in liquid nitrogen and standing for a second preset time period, so that the internal temperature of the battery cells of said battery pack is decreased to a second preset temperature; taking out the broken battery cells from the liquid nitrogen to obtain an object to be treated; transferring said object into a heating device and standing for a third preset time period, so that said object is subjected to thermal runaway reaction and releases heat; crushing residues obtained after the thermal runaway reaction; and roasting the crushed residues. A battery pack to be dissembled is first subjected to rapid-freezing cooling treatment, so that the entire disassembling process of said battery pack has high safety.
A method for lithium enrichment, comprising the following steps: S1, performing dry grinding on lithium ores to acquire fine powder having a particle size not larger than 20 mm; and S2, scrubbing the fine powder and then performing classification to obtain a scrubbed concentrate. In step S2, the particle size of the scrubbed concentrate obtained by classification is not larger than 0.15 mm; the lithium ores comprise lithium clay ores. The method for lithium enrichment can achieve enrichment of lithium-containing ores and effective discarding of impurity ores, thus providing high-quality raw materials for downstream working sections, reducing energy consumption, and saving the production cost.
A device for extracting lithium carbonate in salt lake brine. The device comprises a heating tank mechanism (1), wherein a driving mechanism (2) is fixedly mounted at the top of the heating tank mechanism; supporting columns (3) are fixedly connected to a bottom surface of the heating tank mechanism; the heating tank mechanism (1) comprises a tank shell (11) and a top cover (13); the top cover (13) is movably connected to a top surface of the tank shell (11); a heating cavity (111) and a stirring cavity (14) are provided inside the tank shell (11); a bottom surface of an inner wall of the stirring cavity (14) is provided with a supporting recess (141); a hemispherical liquid storage tank (15) is movably connected to the interior of the supporting recess (141); the driving mechanism (2) comprises a servo electric motor (21) and a stirring rod (25); the top end of the stirring rod (25) penetrates a top surface of the top cover (13) and is fixedly connected to a shaft end of the servo electric motor (21); a connecting bearing (252) is fixedly connected to a bottom surface of an inner wall of the hemispherical liquid storage tank (15); an inner ring of the connecting bearing (252) is fixedly connected to an outer wall of the bottom end of the stirring rod (25); the stirring rod (25) is rotatably connected to the hemispherical liquid storage tank (15) by means of the connecting bearing (252); an arc-shaped plate (254) is fixedly connected to each of two sides of an outer wall of a lower portion of the stirring rod (25); a bottom surface of the arc-shaped plate (254) is fixedly connected to a stirring mesh (27); and filter holes (271) are provided in an outer wall of the stirring mesh (27) in a penetrating manner.
The present application discloses a precursor synthesis-based wastewater desalination system, comprising a pretreatment system, a desalination system and a mechanical vapor recompression system. The pretreatment system is configured to perform value adjustment and stripping deamination on wastewater, recycle generated ammonia water, and perform precipitate interception and value adjustment on the deaminated wastewater; the desalination system is configured to perform pressurized desalination on the deaminated wastewater to generate fresh water and concentrated water; and the mechanical vapor recompression system is configured to evaporate the concentrated water generated by the desalination system to obtain condensed water and crystals, store the condensed water, and recycle the crystals.
The present application discloses a battery life prediction method, comprising: obtaining a first working condition parameter and a second working condition parameter of a battery, wherein the first working condition parameter comprises an indicator combination formed, according to different weights, by a plurality of indicators influencing the battery life, and the second working condition parameter is an indicator representing the battery life; on the basis of a hybrid neural network model, training the hybrid neural network model by taking historical data of the first working condition parameter as input and historical data of the second working condition parameter as output until the model converges, to generate a target prediction model; inputting data to be predicted of the battery into the target prediction model to generate a prediction result; and determining a battery life level in the current prediction result to match a corresponding use suggestion.
G06F 30/27 - Optimisation, vérification ou simulation de l’objet conçu utilisant l’apprentissage automatique, p.ex. l’intelligence artificielle, les réseaux neuronaux, les machines à support de vecteur [MSV] ou l’apprentissage d’un modèle
A ton bag residual sufficient pouring apparatus and a feeding device. The ton bag residual sufficient pouring apparatus comprises a material bin (100), a clamping mechanism (200), a gas feeding and discharging mechanism (300), and a high-frequency vibration mechanism (400). A material bin opening (102) is formed on the material bin (100). The clamping mechanism (200) is provided on the outer wall of the material bin (100), and the clamping mechanism (200) is used for clamping a bag opening of a ton bag (20), so that the bag opening is provided towards the material bin opening (102). The gas feeding and discharging mechanism (300) is used for inflating the ton bag (20). The high-frequency vibration mechanism (400) is provided on the outer wall of the material bin (100), and the high-frequency vibration mechanism (400) is used for vibrating the ton bag (20) after the ton bag (20) is inflated. In the ton bag residual sufficient pouring apparatus, the high-frequency vibration mechanism vibrates the ton bag after the ton bag is inflated, so that residual materials in the ton bag are reliably poured out, thereby solving the problem that many residual materials exist in the ton bag after feeding.
y2-xx4344 3-44 3- is complexed with iron ions, and performing solid-liquid separation to obtain iron phosphate precipitate and a solution containing V; and concentrating and crystallizing the solution containing V to obtain a sodium vanadate product. The recovery method has a simple process, low cost, and a high recycling rate, is environmentally friendly, allows for comprehensive and efficient recovery of V and P elements in positive electrode materials, and has positive guiding significance for recycling of sodium vanadium phosphate positive electrode materials.
Provided in the present application is a method for recovering black powders of a lithium iron phosphate battery. The recovery method comprises the following steps: (1) sequentially subjecting the black powders to be recovered of a lithium iron phosphate battery to vacuum roasting so as to obtain roasting residues and a phosphorus-containing gas, and condensing and recovering the phosphorus-containing gas; (2) dissolving the roasting residues obtained in step (1) in water for lithium leaching, so as to obtain a lithium hydroxide leachate and leaching residues; and (3) subjecting the leaching residues obtained in step (2) to physical separation, so as to obtain elemental iron by means of the separation. In the present application, by means of the methods of vacuum reduction roasting, selective water leaching of lithium and physical recovery, overall separation and recovery of valuable components such as iron, lithium and phosphorus in the black powders of the lithium iron phosphate battery are achieved, a relatively pure single component can be obtained by means of recovery and separation, and the comprehensive recovery rate is high; moreover, the recovery process is simple, and tedious impurity removal and purification are not needed.
Disclosed are a recovery method and production line for lithium iron phosphate positive electrode waste slurry. The recovery method for lithium iron phosphate positive electrode waste slurry comprises: adding water into lithium iron phosphate positive electrode waste slurry to obtain a waste slurry mixed solution; adjusting the pH value of the waste slurry mixed solution to 5-8 by using a weakly acidic buffering agent, and separating a mixture to be separated to obtain lithium iron phosphate positive electrode filter residues and an NMP mixed filtrate; rectifying the NMP mixed filtrate to obtain an NMP product; mixing the lithium iron phosphate positive electrode filter residues with a lithium source to obtain a lithium iron phosphate positive electrode mixture; and drying and roasting the lithium iron phosphate positive electrode mixture to obtain a lithium iron phosphate positive electrode material. The recovery method for lithium iron phosphate positive electrode waste slurry achieves simple and efficient solid-liquid separation of the lithium iron phosphate positive electrode waste slurry, and also increases the recovery rate of NMP and the lithium iron phosphate positive electrode material, thereby mitigating the problem of environmental pollution.
Disclosed in the present invention is a method for comprehensive recycling of ternary positive electrode waste slurry, comprising: adding NMP to ternary positive electrode waste slurry for slurry mixing; mixing the obtained secondary slurry with polyacrylamide, adding a metal salt, carrying out a heating reaction, and performing separation to obtain crude NMP and solid slags; and carrying out negative-pressure evaporation on the solid slags, and carrying out dehydration, oxygen-free roasting and water soaking, so as to obtain a lithium salt solution and filter residues. On the basis of the characteristics that PAM can be hydrolyzed and crosslinked and can be used as a water absorption material, the present invention immobilizes water so as to separate out NMP, thereby relieving the stress on subsequent rectification. In addition, the PAM can serve as a reducing agent to perform reductive roasting on the ternary positive electrode wastes, thereby facilitating subsequent leaching, and increasing the recovery rate of metal elements.
Disclosed is a method for treating magnesium-containing waste liquid, comprising the following steps: S1, mixing a magnesium precipitation agent with magnesium-containing wastewater, performing solid-liquid separation, and collecting solid-phase residues, the temperature of the mixing being 95-100°C, and the magnesium-containing wastewater containing Mg2+44 2-; S2, beating the solid-phase residues obtained in step S1 and performing primary carbonization on same, performing solid-liquid separation on the carbonized product, and collecting a liquid-phase component; S3, pyrolyzing the liquid-phase component obtained in step S2, performing solid-liquid separation on the pyrolysis product, and collecting a solid-phase product; and S4, performing secondary carbonization on the solid-phase product obtained in step S3, and collecting a liquid-phase component of the carbonized product, so as to prepare a magnesium bicarbonate refined solution. The magnesium precipitation agent comprises at least one of calcium oxide and calcium hydroxide; and the primary carbonization and the secondary carbonization both make a reactant to be in contact with carbon dioxide. The method for treating magnesium-containing wastewater of the present invention can effectively recover and produce high-purity magnesium salts.
Disclosed in the present invention is a method for recovering and pretreating a spent lithium-ion battery. The method comprises: discharging a spent lithium-ion battery, removing an electrolytic solution, and drying same; crushing the dried battery, and subjecting the crushed material to shaking table separation to separately obtain a first mixture containing steel slag, a copper sheet and graphite and a second mixture containing an aluminum foil and a black powder; roasting and screening the second mixture in an inert atmosphere to separate out the aluminum foil and the black powder; subjecting the first mixture to magnetic separation to separate out the steel slag and a third mixture containing the copper sheet and graphite; and roasting and screening the third mixture in an inert atmosphere to separate out the copper sheet and graphite. In the present invention, overall recovery of a spent lithium-ion battery is achieved by means of the procedures of crushing, screening, shaking table separation, magnetic separation, roasting, secondary screening, etc., and the whole process can be completed mechanically without any manual work; and in the whole separation process, physical separation is carried out by utilizing the inherent properties of materials, no chemical reagent is added, and therefore the method is a green and efficient separation method.
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
79.
METHOD FOR RECYCLING SLUDGE CONTAINING CALCIUM FLUORIDE
Disclosed in the present invention is a method for recycling a sludge containing calcium fluoride. The method comprises the following steps: mixing sludge containing calcium fluoride with water, then adding a first citrate reagent and a first acid liquid, and stirring same, followed by solid-liquid separation, so as to obtain a first solid. Preferably, the method further comprises the following steps: mixing the first solid with water, adding an alkali, and stirring same, followed by solid-liquid separation, so as to obtain a second solid; and mixing the second solid with water, adding a second citrate reagent and a second acid liquid, and stirring same, followed by solid-liquid separation, so as to obtain a finished calcium fluoride product. In the method, low-grade sludge containing calcium fluoride is used as a raw material, a citrate reagent is used in combination with an acid and an alkali, and calcium fluoride meeting the quality requirements of different industries is obtained by controlling the amount of the reagent and removing impurities, such that the secondary pollution of fluorine is reduced while the sludge containing calcium fluoride is effectively recycled.
The present invention relates to a synthesis process and system for and the use of iron phosphate. The synthesis process comprises: subjecting pure water and a molten metal to flow merging, so as to obtain a molten metal to be treated; carrying out the synthesis of iron phosphate, followed by concentration and extraction, so as to obtain a concentrated slurry; subjecting the concentrated slurry to circular operations of iron phosphate synthesis, concentration and extraction by using the molten metal to be treated, so as to obtain a cyclically concentrated slurry; stopping the flow merging of pure water and the molten metal; and drying and dehydrating the cyclically concentrated slurry and the molten metal. Consistent production of iron phosphate can be achieved, the production efficiency is high, and the cost is low.
44 2-44 2- in the nickel-containing waste residue is (2-2.05):1. The method in the present invention can achieve separation of nickel and impurity metals.
C22B 1/00 - Traitement préliminaire de minerais ou de débris ou déchets métalliques
C01D 7/00 - Carbonates de sodium, de potassium ou des métaux alcalins en général
C01F 7/142 - Oxyde ou hydroxyde d'aluminium obtenus à partir d'aluminates de métaux alcalins à partir de solutions aqueuses d'aluminate par neutralisation avec un agent acide avec du dioxyde de carbone
H01M 10/54 - Récupération des parties utiles des accumulateurs usagés
82.
DOPED FERROUS LITHIUM PHOSPHATE, PREPARATION METHOD THEREFOR AND USE THEREOF
The present application relates to the technical field of battery materials. Provided are doped ferrous lithium phosphate, a preparation method therefor, and the use thereof. In the present application, the preparation method for the doped ferrous lithium phosphate comprises the following steps: first preparing two types of doped precursors having different doping proportions and different granular sizes by using ores containing iron and doping elements as raw materials; and then preparing the doped ferrous lithium phosphate having high compaction density and energy density by grading large and small granules and elements. The doped ferrous lithium phosphate prepared by said method has uniform granule distribution, and has a stable stoichiometric ratio between Fe and M. In addition, the doped ferrous lithium phosphate has both high compaction density and high energy density, and therefore has excellent conductivity.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
C01B 32/05 - Préparation ou purification du carbone non couvertes par les groupes , , ,
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p.ex. phosphates, silicates ou borates
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
The present application belongs to the technical field of mineral extraction, and disclosed is a treatment method for carbonate lithium clay. By means of repeated scrubbing and mixed material particle grading in the method, coarse-grained calcite in carbonate lithium clay can be effectively removed, and small-particle materials can be conveniently enriched; then effective secondary separation is conducted according to the particle size and the impurity content; particles with different compositions are distinguished and subjected to desulfurization and decarbonization, calcite removal and lithium flotation in a step-by-step manner, such that the content of impurities such as iron and calcium in a product is further reduced; and finally, the lithium enrichment multiple of the obtained lithium concentrate reaches twice or above, the comprehensive recovery rate of lithium reaches 75% or above, and the removal rate of impurity elements such as iron, calcium and sulfur is larger than 80%. The treatment method takes full advantage of the characteristics of the carbonate lithium clay and combines the scrubbing process with low investment and low operation cost with the flotation process with high adaptability and good separation performance according to the situation that the lithium content of the carbonate lithium clay is low, such that the applicable economy is high.
Disclosed in the present invention is a comprehensive treatment method for wastewater. The wastewater comprises phosphorus-containing wastewater, magnesium-containing wastewater and ammonia-containing wastewater. The comprehensive treatment method comprises the following steps: according to the molar ratio of nitrogen, magnesium and phosphorus of (9-11): (1.5-2.5): 1, mixing phosphorus-containing wastewater, magnesium-containing wastewater and ammonia-containing wastewater to obtain a mixed solution, and reacting and aging to obtain a mother solution and struvite. In the comprehensive processing method, phosphorus-containing wastewater, magnesium-containing wastewater and ammonia-nitrogen-containing wastewater generated in different procedures during a lithium battery recycling process are mixed for reaction to serve as a phosphorus source, a magnesium source and a nitrogen source to form struvite; and phosphorus and magnesium resources in wastewater are used to the greatest extent, can be directly used as a high-quality phosphate fertilizer for agriculture and forestry, have relatively high added values, and do not generate solid wastes containing phosphorus or magnesium. In addition, the reaction process do not require process facilities which occupy excessively large area.
The present invention relates to the technical field of batteries, and disclosed are a porous spherical ternary precursor and a preparation method therefor, a ternary positive electrode material, a positive electrode plate and a battery. The method comprises: introducing a metal solution, ammonia water and an alkali liquor into a reaction kettle together, starting stirring, maintaining the pH at 11.5-12.5, and granulating the mixture to form primary particles; continuing granulation so as to agglomerate the primary particles to form secondary particles, gradually reducing the pH in the reaction kettle to 11-11.5 during the process that the secondary particles grow to a target particle size, synchronously and gradually reducing the stirring speed so as to gradually grow the secondary particles to form porous spheres, and after the secondary particles grow to the target particle size, rapidly increasing the pH in the reaction kettle to 11.5-12.5 and maintaining same for a preset time to obtain an intermediate precursor; and treating the intermediate precursor to obtain a porous spherical ternary precursor. The method can achieve organic unification of large specific surface area and high compaction of the precursor on the premise of ensuring the cycling performance of a battery.
H01M 4/131 - PROCÉDÉS OU MOYENS POUR LA CONVERSION DIRECTE DE L'ÉNERGIE CHIMIQUE EN ÉNERGIE ÉLECTRIQUE, p.ex. BATTERIES Électrodes Électrodes composées d'un ou comprenant un matériau actif Électrodes pour accumulateurs à électrolyte non aqueux, p.ex. pour accumulateurs au lithium; Leurs procédés de fabrication Électrodes à base d'oxydes ou d'hydroxydes mixtes, ou de mélanges d'oxydes ou d'hydroxydes, p.ex. LiCoOx
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
86.
METHOD FOR RECOVERING VALUABLE METALS FROM WASTE LITHIUM-ION BATTERY
Disclosed is a method for recovering valuable metals from a waste lithium-ion battery. The method comprises the following steps: S1: discharging the waste lithium-ion battery in a discharge solution containing sulfate, then mixing with sulfate and/or sulfide and carrying out pyrolysis roasting, spraying a solution containing sulfate during the pyrolysis roasting process, and recovering a black battery powder; and S2: leaching metal ions in the battery black powder by using a solvent, and extracting and precipitating lithium to obtain lithium carbonate and nickel cobalt manganese sulfate. The method of the present invention uses the sulfate solution to perform discharge treatment on the waste lithium-ion battery, which may promote the sulfation of valuable metals in the waste lithium-ion battery, and improve the pyrolysis roasting effect. In the method of the present invention, control of the pyrolysis roasting temperature is implemented by means of the solution containing sulfate being sprayed during the pyrolysis roasting process, thereby avoiding the generation of a large amount of metal alloys and impurities caused by the pyrolysis roasting temperature being excessively high.
C22B 3/38 - Traitement ou purification de solutions, p.ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques contenant du phosphore
C22B 23/02 - Obtention du nickel ou du cobalt par voie sèche
The present application relates to the technical field of comprehensive utilization of solid waste. Disclosed is a method for purifying and whitening phosphogypsum. The method for purifying and whitening phosphogypsum comprises the following steps: (1) adding water into phosphogypsum to prepare pulp, and decolorizing the pulp to obtain decolorized pulp; (2) adding a collector agent into the decolorized pulp, adding a pH regulator to adjust the pH to 2.0-2.5, and carrying out first direct flotation to obtain a first flotation liquor; (3) adding the pH regulator into the first flotation liquor to adjust the pH to 2.0-2.5, and carrying out second direct flotation to obtain a second flotation liquor; and (4) adding the pH regulator into the second flotation liquor to adjust the pH to 2.0-2.5, carrying out third direct flotation, concentrating, filtering, and drying to obtain refined phosphogypsum. Phosphogypsum having high purity and high whiteness can be prepared, thereby effectively reducing stockpiling of phosphogypsum and alleviating environmental pressure.
xy1-x-y22, wherein 0.6≤x≤1, and 0≤y≤0.4; the coating agent comprises an ionic liquid, and the anion of the ionic liquid is one of TFSI⁻, PF⁻6, and BF⁻4; the cation of the ionic liquid is one of an imidazolium salt ion and a pyridinium salt ion; and the coating agent is coated on the surface of the ternary positive electrode material by means of spraying. The present application uses the ionic liquid as the coating agent to coat the surface of the ternary positive electrode material, so that the conductivity, hydrophobicity and stability of the ternary positive electrode material can be improved, the sensitivity of the ternary positive electrode material to the humidity is reduced, and the problem that the ambient humidity control cost is excessive during a process of manufacturing a battery using a high-nickel ternary positive electrode material is solved.
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
89.
PREPARATION METHOD FOR AND USE OF CRYSTAL-TRANSFORMED ALUMINUM-DOPED COBALT CARBONATE
Disclosed in the present invention is a preparation method for crystal-transformed aluminum-doped cobalt carbonate, comprising the following steps: (1) preparing a mixed metal solution from cobalt salts and aluminum salts, and preparing a first ammonium bicarbonate solution, a second ammonium bicarbonate solution and a third ammonium bicarbonate solution; (2) adding the mixed metal solution and the second ammonium bicarbonate solution together into the first ammonium bicarbonate solution for mixing to undergo a reaction, and controlling the reaction temperature to be 40-45°C until a crystal-transformed aluminum-doped cobalt carbonate seed crystal having a specific surface area of 0.3-0.6 cm2/g is generated; and (3) adding the mixed metal solution and the third ammonium bicarbonate solution together into the solution containing the crystal-transformed aluminum-doped cobalt carbonate seed crystal obtained in step (2) for mixing to undergo a reaction until the particle size of the crystal-transformed aluminum-doped cobalt carbonate seed crystal grows to 16.0-19.0 μm, performing solid-liquid separation, and washing and drying the obtained solid to obtain the crystal-transformed aluminum-doped cobalt carbonate. The crystal-transformed aluminum-doped cobalt carbonate prepared by the preparation method for crystal-transformed aluminum-doped cobalt carbonate has a good aluminum doping effect.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
90.
METHOD FOR PREPARING FERROMANGANESE PHOSPHATE BY COPRECIPITATION AND USE THEREOF
Disclosed in the present invention are a method for preparing ferromanganese phosphate by coprecipitation and a use thereof. A ferricyanide solution, a manganese salt solution, and a mixed solution of a phosphoric acid and a perchloric acid are respectively prepared; the ferricyanide solution, the manganese salt solution, the mixed solution, and alkali liquor are concurrently added into a base solution for reaction; when a reaction material has a target particle size, solid-liquid separation is performed to obtain a precipitate; and washing and drying are carried out to obtain ferromanganese phosphate. According to the present invention, ferricyanide is used to inhibit the direct precipitation of ferric ions, and the perchloric acid and the phosphoric acid are used to carry out cyanide breaking reaction, so that the precipitation rate of iron phosphate is slowed down, thereby implementing coprecipitation of iron and manganese, and improving the homogeneity of mixing iron and manganese.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p.ex. phosphates, silicates ou borates
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
91.
METHOD FOR HYDROTHERMAL PREPARATION OF FERROMANGANESE PHOSPHATE AND USE THEREOF
Disclosed in the present invention are a method for hydrothermal preparation of ferromanganese phosphate and a use thereof. A ferricyanide solution is respectively added into an iron salt solution and a manganese salt solution for reaction to obtain two precipitates, the two precipitates are mixed and dispersed in water, and a phosphoric acid solution and a nitric acid solution are continuously added for hydrothermal reaction, thereby obtaining ferromanganese phosphate. According to the present invention, ferricyanide is respectively reacted with an iron salt and a manganese salt to generate corresponding ferricyanide salt precipitates, and the precipitates are mixed for iron-manganese proportioning and are subjected to hydrothermal reaction with nitric acid and phosphoric acid to generate ferromanganese phosphate, such that iron and manganese are co-precipitated, thereby improving the uniformity of iron-manganese mixing.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p.ex. phosphates, silicates ou borates
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
92.
METHOD FOR RECYCLING LITHIUM-ION BATTERY ELECTROLYTE
3466, protecting the lithium hexafluorophosphate during negative pressure evaporation and concentration, so as to avoid decomposition thereof. The concentrated liquid is cooled and crystallized, and the precipitated solid is decomplexed by means of a drying treatment, to obtain lithium hexafluorophosphate.
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
C07C 17/395 - Séparation; Purification; Stabilisation; Emploi d'additifs par traitement donnant lieu à une modification chimique d'au moins un composé
93.
PREPARATION METHOD FOR BATTERY-GRADE LITHIUM CARBONATE
The present invention relates to the technical field of battery-grade lithium carbonate, and disclosed is a preparation method for battery-grade lithium carbonate. The preparation method comprises: adding a sodium carbonate solution to a lithium-containing mother solution, and subjecting same to high-temperature lithium precipitation to obtain crude lithium carbonate; subjecting the crude lithium carbonate to a multi-stage cycle operation of hydrogenation reaction and thermal decomposition reaction: mixing the crude lithium carbonate with water to prepare a pure water slurry, introducing carbon dioxide thereto to perform a hydrogenation reaction until lithium carbonate is completely dissolved, and filtering same to obtain a lithium bicarbonate solution; heating the lithium bicarbonate solution until a precipitate is generated, and separating high-purity lithium carbonate and a lithium-containing filtrate; and returning the lithium-containing filtrate to mix same with another part of the crude lithium carbonate, and slurrying the filtrate to form a filtrate slurry, wherein the cycle number of the multi-section cycle operation is at least four. By repeatedly using the lithium-containing filtrate after the thermal decomposition reaction for slurrying, the present application greatly reduces the amount of pure water. Due to the problem of solubility of lithium carbonate, the less pure water there is, the less correspondingly dissolved lithium carbonate there is, thereby greatly improving the conversion rate of solid lithium carbonate.
The present invention belongs to the technical field of cobalt carbonate, and disclosed are aluminum-doped cobalt carbonate particles, and a preparation method therefor and the use thereof. The aluminum-doped cobalt carbonate particles have a core-shell structure, wherein cobalt carbonate primary particles forming a core are granular particles with uniformly distributed aluminum, and cobalt carbonate primary particles forming a shell are flaky particles. The aluminum-doped cobalt carbonate particles have a high surface reaction activity, a controllable morphology, a uniform aluminum distribution and no segregation. In addition, the aluminum-doped cobalt carbonate particles have a short and narrow flaky primary particle morphology, such that there are large gaps among the primary particles, and the porosity is high, which is beneficial for removing impurity elements of Cl, Na or K in a washing stage. Using the particles for sintering into cobaltosic oxide facilitates the release of carbon dioxide during the sintering process, and prevents the particles from cracking; and using cobaltosic oxide for mixing with a lithium salt facilitates the synthesis of lithium cobalt oxide by means of lithium permeation. The preparation method for the aluminum-doped cobalt carbonate particles is simple, and can effectively control the morphology of the aluminum-doped cobalt carbonate particles.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
95.
METHOD FOR DECOLORIZING AND WHITENING PHOSPHOGYPSUM
422O and a good whiteness. The decolorizing collector of the present disclosure is mainly composed of diesel oil, a foaming agent and naphthenic soap, wherein the diesel oil makes an ore pulp have a hydrophobization effect; one end of the naphthenic soap contains a polar carboxylic acid group, the other end thereof is a naphthenic group that is connected to methylene, which has an extremely high hydrophobicity, and the naphthenic soap has a very strong adsorption effect on charged mine slime and fine-particle carbon during the decolorizing process; in addition, the foaming agent is further added to the decolorizing collector, such that a large amount of stable foam is provided during reverse flotation inflation, and the decolorizing and desliming effects are better.
B03B 7/00 - Combinaisons de procédés ou d'appareils opérant par voie humide, avec d'autres procédés ou appareils, p.ex. pour la préparation des minerais ou cendres
A leaching method for a ternary battery powder, which method comprises the following steps: the formulation of a reaction slurry, dechlorination, fluorine removal, alkali leaching, roasting, water leaching and high-pressure leaching, wherein the dechlorination is mainly achieved by adding a calcium oxide powder and a sodium metaaluminate solution; the fluorine removal is mainly achieved by means of coagulating sedimentation; the alkali leaching comprises adding sodium hydroxide to the solution, which has been subjected to fluorine removal and dechlorination, for leaching; the roasting comprises uniformly mixing the alkali leaching slag powder and a roasting additive for roasting; the water leaching comprises adding pure water to the roasting slag for leaching; and the high-pressure leaching comprises uniformly mixing the water-leaching slag powder and a leaching additive, then adding the mixture to a high-pressure kettle, then adding pure water and sulfuric acid thereto, uniformly stirring the mixture, and subjecting the mixture to high-pressure leaching.
A method for recovering a waste lithium-aluminum-silicon glass ceramic, which method comprises the following steps: subjecting the waste lithium-aluminum-silicon glass ceramic to ball milling, so as to obtain a glass powder; formulating a hydrofluoric acid solution with a preset concentration as a leaching agent, adding the glass powder to the leaching agent according to a preset liquid-solid ratio, performing leaching according to a preset leaching temperature and preset leaching time, and filtering same to obtain an extract; adding a calcium chloride solution to the extract to dissolve the extract, and filtering same to obtain a conversion solution; extracting the conversion solution, mixing the water phases obtained by two-stage extraction to obtain an extracted conversion solution, mixing oil phases obtained by two-stage extraction to obtain an extraction solution, subjecting the extraction solution to reverse extraction in a sulfuric acid solution, and filtering same to obtain zirconium sulfate; and adjusting the pH of the obtained extracted conversion solution, and filtering same to obtain an aluminum hydroxide precipitate and a lithium-containing solution.
The present disclosure relates to a method for preparing high-nickel matte by combining ternary iron-aluminum slag with a laterite-nickel ore, and belongs to the technical field of nickel matte preparation. The method comprises the following steps: (1) drying, which involves: respectively drying ternary iron-aluminum slag and a laterite-nickel ore; (2) mixing, batching and granulating, which involves: uniformly mixing the dried ternary iron-aluminum slag, the laterite-nickel ore, a first flux and a reducing agent, and granulating the mixture to obtain mixed granules; (3) reduction vulcanization smelting, which involves: feeding the mixed granules obtained in step (2) into a side-blown furnace for reduction vulcanization smelting, so as to obtain low-nickel matte, smelting slag and a first flue gas; and (4) blowing, which involves: uniformly mixing the low-nickel matte obtained in step (3) with a second flux, and then feeding the mixture into the side-blown furnace for blowing, so as to obtain high-nickel matte, blowing slag and a second flue gas. The ternary iron-aluminum slag is used as a vulcanizing agent, such that while the nickel and cobalt in the ternary iron-aluminum slag are effectively recycled, the high-nickel matte with high nickel and cobalt grades and high nickel and cobalt direct yields is obtained.
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p.ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p.ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p.ex. liants, charges
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p.ex. batteries à insertion ou intercalation de lithium dans les deux électrodes; Batteries à l'ion lithium
100.
METHOD FOR ENRICHMENT OF LITHIUM FROM LITHIUM CLAY ORE
The present invention relates to the technical field of comprehensive utilization of resources. Disclosed is a method for enrichment of lithium from lithium clay ore. The method of the present invention comprises the following steps: (1) crushing particles to obtain fine raw ore particles; (2) performing an initial concentration operation on the raw ore by using ferric sulfate or ferric nitrate, sodium oleate and cocoamine to obtain rough concentrate and coarse tailings; (3) cleaning the rough concentrate to obtain a first part of concentrate; (4) ball-milling the coarse tailings; (5) performing a flotation operation on the ball-milled tailings to obtain re-milled rough concentrate and re-milled coarse tailings; (6) performing a flotation operation on the re-milled rough concentrate to obtain a second part of concentrate; and (7) performing a flotation operation on the re-milled coarse tailings to obtain cleaned tailings. The lithium in the concentrate obtained by the method of the present invention has a high grade and a relatively high recovery ratio.
B03B 7/00 - Combinaisons de procédés ou d'appareils opérant par voie humide, avec d'autres procédés ou appareils, p.ex. pour la préparation des minerais ou cendres
brevets
