JX Nippon Mining & Metals Corporation

Japan

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2022 2
2021 5
2020 6
2019 7
Before 2019 48
IPC Class
C22B 11/00 - Obtaining noble metals 21
C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching 16
C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins 13
C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof 13
C22B 15/00 - Obtaining copper 10
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Status
Pending 9
Registered / In Force 59
Found results for  patents

1.

TREATMENT METHOD FOR BATTERY WASTE

      
Document Number 03169915
Status Pending
Filing Date 2022-02-21
Open to Public Date 2022-09-30
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Miyanaga, Hiroshi
  • Haga, Yasufumi

Abstract

A method for treating battery waste includes: a first heat treatment step of heating the battery waste in an atmosphere containing at least one selected from the group consisting of nitrogen, carbon dioxide and water vapor; and after the first heat treatment step, a second heat treatment step of changing the atmosphere in the first heat treatment step and heating the battery waste in an atmosphere which is different from the atmosphere in the first heat treatment step and which contains a larger amount of oxygen than that in the first heat treatment step.

IPC Classes  ?

  • C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
  • C22B 1/02 - Roasting processes
  • H01M 6/52 - Reclaiming serviceable parts of waste cells or batteries
  • H01M 10/54 - Reclaiming serviceable parts of waste accumulators

2.

METHOD FOR PROCESSING LITHIUM ION BATTERY WASTE

      
Document Number 03200605
Status Pending
Filing Date 2021-10-26
Open to Public Date 2022-06-23
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Goda, Tomonari
  • Kawamura, Toshifumi

Abstract

Provided is a method for processing lithium ion battery waste, which can effectively precipitate aluminum ions and iron ions in the solution by neutralization and relatively easily separate the precipitate. The method for processing lithium ion battery waste includes: a leaching step of leaching battery powder in an acid, the battery powder containing at least aluminum and iron and being obtained from lithium ion battery waste, and removing a leached residue by solid-liquid separation to obtain a leached solution containing at least aluminum ions and iron ions; and a neutralization step of adding phosphoric acid and/or a phosphate salt and an oxidizing agent to the leached solution, increasing a pH of the leached solution to a range of 2.0 to 3.5, precipitating the aluminum ions and the iron ions in the leached solution as aluminum phosphate and iron phosphate, respectively, and removing a neutralized residue by solid-liquid separation to obtain a neutralized solution.

IPC Classes  ?

  • C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
  • C22B 3/16 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in organic solutions
  • C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
  • C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
  • C22B 21/00 - Obtaining aluminium
  • C22B 23/00 - Obtaining nickel or cobalt
  • C22B 47/00 - Obtaining manganese

3.

METHOD FOR PRODUCING LITHIUM HYDROXIDE

      
Document Number 03173751
Status Pending
Filing Date 2021-04-21
Open to Public Date 2021-10-28
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Ariyoshi, Hirotaka
  • Tomita, Isao
  • Abe, Hiroshi

Abstract

The present invention provides a method for producing lithium hydroxide, said method enabling the production of lithium hydroxide from lithium sulfate at a relatively low cost. A method for producing lithium hydroxide from lithium sulfate, said method comprising: a hydroxylation step wherein a lithium hydroxide solution is obtained by reacting the lithium sulfate with barium hydroxide in a liquid; a barium removal step wherein barium ions are removed from the lithium hydroxide solution with use of a cation exchange resin and/or a chelating resin; and a crystal precipitation step wherein lithium hydroxide is precipitated in the lithium hydroxide solution after the barium removal step.

IPC Classes  ?

  • C01D 15/02 - Oxides; Hydroxides
  • B01J 39/07 - Processes using organic exchangers in the weakly acidic form
  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
  • C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
  • C22B 3/20 - Treatment or purification of solutions, e.g. obtained by leaching
  • C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
  • C22B 3/42 - Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
  • C22B 19/20 - Obtaining zinc otherwise than by distilling
  • C22B 26/12 - Obtaining lithium

4.

METHOD FOR PRODUCING MIXED METAL SALT

      
Document Number 03173753
Status Pending
Filing Date 2021-04-22
Open to Public Date 2021-10-28
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Arakawa, Junichi
  • Tajiri, Kazunori

Abstract

A method for producing mixed metal salts containing manganese ions and at least one of cobalt ions and nickel ions, the method including: an Al removal step of subjecting an acidic solution containing at least manganese ions and aluminum ions, and at least one of cobalt ions and nickel ions, to removal of the aluminum ions by extracting the aluminum ions into a solvent, the acidic solution being obtained by subjecting battery powder of lithium ion batteries to a leaching step; and a precipitation step of neutralizing an extracted residual liquid obtained in the Al removal step under conditions where a pH is less than 10.0, to precipitate mixed metal salts comprising a metal salt of manganese and a metal salt of at least one of cobalt and nickel.

IPC Classes  ?

  • B01D 9/02 - Crystallisation from solutions
  • B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
  • B09B 5/00 - Operations not covered by a single other subclass or by a single other group in this subclass
  • C01G 51/00 - Compounds of cobalt
  • C01G 53/00 - Compounds of nickel
  • C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
  • C22B 3/32 - Carboxylic acids
  • C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
  • C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
  • H01M 10/54 - Reclaiming serviceable parts of waste accumulators

5.

EQUIPMENT AND METHOD FOR LEACHING COPPER, AND METHOD FOR PRODUCING ELECTROLYTIC COPPER USING SAID EQUIPMENT AND METHOD

      
Document Number 03175938
Status Pending
Filing Date 2021-04-20
Open to Public Date 2021-10-28
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Miura, Akira
  • Winarko, Ronny
  • Liu, Wenying

Abstract

Provided is a method for efficiently promoting a leaching reaction of copper. Equipment for leaching copper includes a reactor for leaching reaction and a controller for oxidation-reduction potential. The reactor is configured to be provided with a leaching solution containing iodine and iron. The reactor is configured to be capable of being tightly sealed during the leaching reaction. The controller for oxidation-reduction potential is configured so that, during the leaching reaction, the oxidation-reduction potential of the leaching solution can be maintained at 500 mV (based on Ag/AgCl reference) or higher.

IPC Classes  ?

  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
  • C22B 15/00 - Obtaining copper

6.

HEAT TREATMENT METHOD FOR BATTERY WASTE AND LITHIUM RECOVERY METHOD

      
Document Number 03172851
Status Pending
Filing Date 2021-03-30
Open to Public Date 2021-10-07
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Miyanaga, Hiroshi
  • Goda, Tomonari

Abstract

A method for heat-treating battery waste containing lithium includes: allowing an atmospheric gas containing oxygen and at least one selected from the group consisting of nitrogen, carbon dioxide and water vapor to flow in a heat treatment furnace in which the battery waste is arranged, and heating the battery waste while adjusting an oxygen partial pressure in the furnace.

IPC Classes  ?

  • B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
  • H01M 10/54 - Reclaiming serviceable parts of waste accumulators

7.

METHOD FOR REMOVING LINEAR OBJECTS, DEVICE FOR REMOVING LINEAR OBJECTS, AND METHOD FOR PROCESSING ELECTRONIC/ELECTRICAL EQUIPMENT COMPONENT WASTE

      
Document Number 03170039
Status Pending
Filing Date 2021-03-03
Open to Public Date 2021-09-10
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor Aoki, Katsushi

Abstract

Provided is a method for removing a linear object, a device for removing a linear object, and a method for processing electronic/electrical equipment component waste, which can improve separation efficiency. The method for removing linear objects including: arranging a plurality of filters 3 in a vibrating sieve machine 1 such that the filters 3 are adjacent to each other so as to partially overlap with each other in a feed direction of a raw material, each of the filters 3 comprising a plurality of rods 2 extending at distances in the feed direction of the raw material and a beam portion 21 supporting the plurality of rods 1 at one ends of the plurality of the rods 2, the other ends of the plurality of the rods 2 being free ends; arranging a guide 6 below a tip of one of the filters 3 located on a most downstream side in the feed direction; feeding the raw material containing at least linear objects and plate-form objects into the vibrating sieve machine 1; and sorting the linear objects and the plate-form objects by vibrating the filters 3, sieving the linear objects to an under-sieve side of the vibrating sieve machine 1, and capturing lumpy linear objects with the guide.

IPC Classes  ?

  • B07B 1/12 - Apparatus having only parallel elements
  • B07B 9/00 - Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
  • B09B 5/00 - Operations not covered by a single other subclass or by a single other group in this subclass

8.

METHOD FOR RECOVERING VALUABLE METAL

      
Document Number 03125088
Status In Force
Filing Date 2019-12-23
Open to Public Date 2020-07-02
Grant Date 2023-08-08
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Okajima, Nobuaki
  • Tajiri, Kazunori
  • Kashimura, Hiromichi

Abstract

A method for recovering at least cobalt, among valuable metals of cobalt and nickel, from an acidic solution that is produced by subjecting a waste material containing a positive electrode material of a lithium ion secondary battery to a wet-mode treatment and contains a cobalt ion, a nickel ion and impurities, the method comprising: a first extraction step for Co recovery purpose, in which a cobalt ion is extracted from the acidic solution by means of solvent extraction and is then back-extracted; an electrolysis step for Co recovery purpose, in which electrolysis is carried out using a post-back-extraction solution produced in the first extraction step for Co recovery purpose as an electrolyte solution to produce electrolytic cobalt; a dissolution step for Co recovery purpose, in which the electrolytic cobalt is dissolved in an acid; and a second extraction step for Co recovery purpose, in which a cobalt ion is extracted from a cobalt dissolution solution produced in the dissolution step for Co recovery purpose by means of solvent extraction and is then back-extracted.

IPC Classes  ?

  • C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
  • B09B 3/70 - Chemical treatment, e.g. pH adjustment or oxidation
  • B09B 3/80 - Destroying solid waste or transforming solid waste into something useful or harmless involving an extraction step
  • C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
  • C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
  • C25C 1/08 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of iron group metals, refractory metals or manganese of nickel or cobalt
  • C22B 23/00 - Obtaining nickel or cobalt
  • H01M 10/54 - Reclaiming serviceable parts of waste accumulators

9.

PRODUCTION METHOD OF ADDITIVE MANUFACTURED OBJECT USING PURE COPPER POWDER HAVING SI COATING

      
Document Number 03107218
Status In Force
Filing Date 2019-12-26
Open to Public Date 2020-07-02
Grant Date 2022-08-30
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Watanabe, Hirofumi
  • Yamamoto, Hiroyoshi
  • Shibuya, Yoshitaka
  • Sato, Kenji
  • Morioka, Satoru
  • Chiba, Akihiko
  • Aoyagi, Kenta

Abstract

Provided herein is a production method of an additive manufactured object according to an electron beam-based additive manufacturing method using a pure copper powder with a Si coating formed thereon capable of suppressing the partial sintering of the pure copper powder caused by the preheating thereof in additive manufacturing based on the electron beam method, and suppressing the loss of the degree of vacuum caused by carbon (C) during the molding process, as well as to provide the optimal additive manufacturing conditions to be applied to such pure copper powder having a Si coating formed thereon.

IPC Classes  ?

  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 70/00 - Materials specially adapted for additive manufacturing
  • B22F 1/16 - Metallic particles coated with a non-metal
  • B22F 12/13 - Auxiliary heating means to preheat the material

10.

METHOD FOR RECOVERING VALUABLE METAL

      
Document Number 03125089
Status In Force
Filing Date 2019-12-23
Open to Public Date 2020-07-02
Grant Date 2023-09-19
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Okajima, Nobuaki
  • Tajiri, Kazunori
  • Kashimura, Hiromichi

Abstract

Provided is a method for recovering at least cobalt from among the valuable metals cobalt and nickel from an acid solution containing cobalt ions, nickel ions and impurities, obtained by subjecting waste containing positive electrode material of lithium-ion rechargeable batteries to a wet process. The method comprises a first extraction step for recovering Co reverse-extracted when extracting cobalt ions by solvent extraction from the acid solution; and a second extraction step for recovering cobalt, in which cobalt ions are reverse extracted and extracted by solvent extraction from the post-reverse extraction liquid obtained in the first extraction step for cobalt recovery. The first extraction step for recovering Co has a solvent extraction process in which cobalt ions in the acid solution are extracted in a solvent; a scrubbing process in which the solvent used to extract the cobalt ions is scrubbed; and a reverse extraction process in which cobalt ions in the solvent after scrubbing are reverse extracted into solution.

IPC Classes  ?

  • C22B 23/00 - Obtaining nickel or cobalt
  • C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
  • C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
  • H01M 10/54 - Reclaiming serviceable parts of waste accumulators

11.

APPARATUS FOR ANALYZING COMPOSITION OF ELECTRONIC AND ELECTRICAL DEVICE PART SCRAPS, DEVICE FOR PROCESSING ELECTRONIC AND ELECTRICAL DEVICE PART SCRAPS, AND METHOD FOR PROCESSING ELECTRONIC AND ELECTRICAL DEVICE PART SCRAPS

      
Document Number 03118067
Status In Force
Filing Date 2019-10-30
Open to Public Date 2020-05-07
Grant Date 2023-07-04
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Goda, Tomonari
  • Kawamura, Toshifumi

Abstract

A composition analyzer of electronic/electrical equipment parts waste which, in a short time, can determine the composition of parts waste in electronic/electrical equipment parts waste, a composition analysis method of electronic/electrical equipment parts waste, and a treatment method of electronic/electrical equipment parts waste that uses these are provided. This composition analyzer of electronic/electrical equipment parts waste is provided with: a classification data storage means 111 which extracts images of multiple component types from images captured of electronic/electrical equipment parts waste comprising the multiple component types and stores classification data for sorting by component type; a sorting means 101 which, on the basis of the classification data, extracts images of the multiple component types from the images captured of the electronic/electrical equipment parts waste and sorts these by component type; and an analysis means 103 which analyzes at least one of the surface area, number, average particle diameter and weight ratio of each of the component types sorted by the sorting means 101.

IPC Classes  ?

12.

NOVEL PEPTIDE AND METHOD FOR USING SAME

      
Document Number 03117543
Status Pending
Filing Date 2019-10-17
Open to Public Date 2020-04-30
Owner
  • SHIBAURA INSTITUTE OF TECHNOLOGY (Japan)
  • JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Yamashita, Mitsuo
  • Miura, Akira

Abstract

Provided is a method for selecting a mineral containing arsenic. A peptide having the following amino acid sequence: (TSNQ)-(LIVFA)-(ED)-(RKNMDCPQSETGWHY)-(LIVFA)-(RKNMDCPQSETGWHY)-(LIVFA)-(LIVFA)-(LIVFA)-(RHK)-(TSNQ)-(TSNQ) [wherein any one of at least one kind of amino acid in parentheses is selected].

IPC Classes  ?

  • C07K 4/00 - Peptides having up to 20 amino acids in an undefined or only partially defined sequence; Derivatives thereof
  • B03D 1/01 - Organic compounds containing nitrogen
  • B03D 1/02 - Froth-flotation processes
  • C07K 7/08 - Linear peptides containing only normal peptide links having 12 to 20 amino acids
  • C07K 14/00 - Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
  • C12N 1/00 - Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
  • C12N 7/01 - Viruses, e.g. bacteriophages, modified by introduction of foreign genetic material
  • C12N 15/10 - Processes for the isolation, preparation or purification of DNA or RNA
  • C22B 3/02 - Apparatus therefor
  • C22B 3/18 - Extraction of metal compounds from ores or concentrates by wet processes with the aid of microorganisms or enzymes, e.g. bacteria or algae
  • C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
  • C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
  • C22B 15/00 - Obtaining copper
  • C22B 30/04 - Obtaining arsenic

13.

LINEAR OBJECT REMOVAL METHOD, LINEAR OBJECT REMOVAL DEVICE, AND ELECTRONIC/ELECTRIC APPARATUS COMPONENT SCRAP PROCESSING METHOD

      
Document Number 03111388
Status Pending
Filing Date 2019-09-03
Open to Public Date 2020-03-12
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Aoki, Katsushi
  • Takeda, Tsubasa

Abstract

Provided are a linear object removal method, a linear object removal device, and an electronic/electric apparatus component scrap processing method that make it possible to efficiently sort out linear objects from objects to be sorted that include various shapes. The linear object removal method includes: disposing a plurality of filters 3 inside a vibrating sieve machine 1 by adjoining the filters so as to partially overlap each other along a raw material supply direction, the filters comprising a plurality of rods 2 which extend with intervals therebetween along the supply direction and beam parts 21 which support the plurality of rods 2 at one end 2a of each of the plurality of rods 2, with the other ends 2b of the plurality of rods 2 serving as free ends; and supplying the raw material, which includes at least linear objects and sheet-like objects, to the inside of the vibrating sieve machine 1, and imparting a vibration to the filters 3, thereby sifting the linear objects toward the sieve bottom of the vibrating sieve machine 1.

IPC Classes  ?

  • B07B 13/04 - Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size

14.

METHOD FOR PROCESSING ELECTRONIC AND ELECTRICAL DEVICE COMPONENT SCRAP

      
Document Number 03094153
Status In Force
Filing Date 2019-03-18
Open to Public Date 2019-09-19
Grant Date 2023-06-27
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Aoki, Katsushi
  • Takeda, Tsubasa

Abstract

Provided is a method for processing electronic and electrical device component scrap, with which it possible to selectively process, accurately and efficiently, electronic and electrical device scrap and the like. This method for processing electronic and electrical device component scrap is characterized by containing a separation step in which a sorter 10 comprising a metal sensor 2, a color camera 3, an air valve 4 and a conveyor 5 is used to separate non-metal materials 1b or metal materials 1a1 and 1a2 from electronic and electrical device component scrap 1 containing metal materials 1a1 and 1a2 and non-metal materials 1b, wherein when detecting the metal materials 1a1 and 1a2 in the electronic and electrical device component scrap using the metal sensor 2, a given interval is provided between the adjoining metal materials 1a1 and metal materials 1a2, to prevent non-metal materials 1b present between the metal materials 1a1 and metal materials 1a2 from being incorrectly detected.

IPC Classes  ?

  • C22B 1/00 - Preliminary treatment of ores or scrap
  • B07C 5/34 - Sorting according to other particular properties
  • B09B 5/00 - Operations not covered by a single other subclass or by a single other group in this subclass
  • C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof

15.

METHOD FOR PROCESSING ELECTRONIC AND ELECTRICAL DEVICE COMPONENT SCRAP

      
Document Number 03094156
Status In Force
Filing Date 2019-03-18
Open to Public Date 2019-09-19
Grant Date 2023-06-20
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Aoki,katsushi
  • Takeda,tsubasa

Abstract

Provided is a method for processing electronic and electrical device component scrap, with which it is possible to increase the amount of electronic and electrical device components processed in the smelting process, and to efficiently recover valuable metals. This method for processing electronic and electrical device component scrap comprises: a first step for removing powder and film-form component scrap from electronic and electrical device component scrap; a second step for concentrating synthetic resin and substrates from electronic and electrical device component scrap from which powder and film-form component scrap has been removed; and a third step for concentrating substrates containing valuable metals from the concentrate obtained in the second step.

IPC Classes  ?

  • C22B 1/00 - Preliminary treatment of ores or scrap
  • B09B 5/00 - Operations not covered by a single other subclass or by a single other group in this subclass

16.

PROCESSING METHOD FOR ELECTRONIC/ELECTRIC DEVICE COMPONENT WASTE

      
Document Number 03090225
Status In Force
Filing Date 2019-01-30
Open to Public Date 2019-08-08
Grant Date 2023-10-24
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Aoki, Katsushi
  • Takeda, Tsubasa
  • Ohtsuka, Norimasa

Abstract

Provided is a processing method for electronic/electric device component waste by which it is possible to increase the amount of electronic/electric device component waste that can be processed in a smelting step, and by which valuable metals can be efficiently recovered. The processing method for electronic/electric device component waste includes a step for processing the electronic/electric device component waste in a smelting step, and includes, prior to the smelting step, a step for reducing smelting inhibitors contained in the electronic/electric device component waste.

IPC Classes  ?

  • C22B 1/00 - Preliminary treatment of ores or scrap
  • B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
  • C22B 5/02 - Dry processes
  • C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
  • C22B 9/16 - Remelting metals

17.

METHOD FOR REMOVING WIRE-FORM OBJECTS, DEVICE FOR REMOVING WIRE-FORM OBJECTS, AND METHOD FOR PROCESSING ELECTRONIC/ELECTRICAL APPARATUS COMPONENT SCRAP

      
Document Number 03090222
Status In Force
Filing Date 2019-01-30
Open to Public Date 2019-08-08
Grant Date 2023-01-24
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Aoki, Katsushi
  • Sasaoka, Hidetoshi

Abstract

Provided are a method for removing wire-form objects, a device for removing wire-form objects, and a method for processing electronic/electrical apparatus component scrap with which it is possible to efficiently sort wire-form objects from objects to be sorted that include various shapes. This method for removing wire-form objects includes: disposing a filter in a vibrating sieve machine, the filter being provided with a plurality of rods that extend in a supply direction of a raw material, the rods having gaps formed therebetween; and disposing the raw material, which includes at least wire-form objects and sheet-form objects, on the filter and imparting vibration to the filter, thereby sieving the wire-form objects to below the sieve.

IPC Classes  ?

  • B07B 1/12 - Apparatus having only parallel elements
  • B07B 1/28 - Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting, or wobbling screens
  • B09B 5/00 - Operations not covered by a single other subclass or by a single other group in this subclass

18.

METHOD FOR RECOVERING CU AND METHOD OF PREPARING ELECTROLYTIC COPPER

      
Document Number 03075464
Status In Force
Filing Date 2018-12-27
Open to Public Date 2019-07-04
Grant Date 2023-02-21
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor Fukano, Yuken

Abstract

Providing a method of recovering Cu from copper ore containing Hg. A method for recovering Cu from copper ore, the method comprising: (A) providing copper ore containing Hg with an amount of 0.2 ppm or more; (B) treating the copper ore to leach Cu and Hg with use of solution containing iodide ions and Fe (3+); and (C) treating post-leaching solution with activated carbon to absorb the iodide ions and Hg.

IPC Classes  ?

19.

METAL POWDER FOR ADDITIVE MANUFACTURING METAL LAMINATE AND METAL ADDITIVE MANUFACTURED OBJECT MANUFACTURED USING SAID METAL POWDER

      
Document Number 03039936
Status In Force
Filing Date 2018-06-21
Open to Public Date 2019-04-04
Grant Date 2021-05-25
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Shibuya, Yoshitaka
  • Sato, Kenji

Abstract

85068386 ABSTRACT This metal powder is characterized in that: a coating film, which is composed of at least one among Gd, Ho, Lu, Mo, Nb, Os, Re, Ru, Tb, Tc, Th, Tm, U, V, W, Y, Zr, Cr, Rh, Hf, La, Ce, Pr, Nd, Pm, Sm and Ti, is formed on the surface of copper or copper alloy powder; and the film thickness of said coating film is 5-500 nm. The present invention addresses the problem of providing: metal powder for additive manufacturing a metal laminate by a laser method, in which the metal powder can be efficiently melted by laser while retaining the high conductivity of copper or a copper alloy; and a metal additive manufactured object manufactured using said metal powder. Date Recue/Date Received 2020-09-01

IPC Classes  ?

  • B22F 1/17 - Metallic particles coated with metal
  • B22F 1/05 - Metallic powder characterised by the size or surface area of the particles

20.

COPPER ALLOY POWDER FOR LAMINATION SHAPING, LAMINATION SHAPED PRODUCT PRODUCTION METHOD, AND LAMINATION SHAPED PRODUCT

      
Document Number 03057056
Status In Force
Filing Date 2018-06-15
Open to Public Date 2019-02-28
Grant Date 2022-12-06
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Sato,kenji
  • Shibuya,yoshitaka

Abstract

The present invention addresses the problem of providing: a copper alloy powder for lamination shaping, being capable of providing both mechanical strength and electrical conductivity and being formed of a copper alloy; a lamination shaped product production method; and a lamination shaped product. One aspect of the present invention is a copper alloy powder for lamination shaping, containing an additional element the amount of a solid solution of which is less than 0.2 at% with respect to copper.

IPC Classes  ?

  • B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 70/00 - Materials specially adapted for additive manufacturing
  • B33Y 80/00 - Products made by additive manufacturing
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • C22C 9/00 - Alloys based on copper

21.

COPPER POWDER, METHOD FOR MANUFACTURING COPPER POWDER, AND METHOD FOR MANUFACTURING SOLID SHAPED OBJECT

      
Document Number 03014690
Status In Force
Filing Date 2018-01-12
Open to Public Date 2018-10-21
Grant Date 2020-10-13
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Endo, Yosuke
  • Yamamoto, Hiroyoshi
  • Suzuki, Ryo
  • Sato, Kenji

Abstract

The present invention provides a copper powder which is capable of fusion bonding with a low energy laser by enabling heat to be efficiently inputted with a high absorption rate for laser irradiation and has high convenience in handling, and provides a method for manufacturing the copper powder. One embodiment of the present invention is a copper powder, having an absorption rate for light having a wavelength .lambda.= 1060 nm of 18.9% to 65.0%, and an index, which is indicated by (the absorption rate for light having a wavelength .lambda.= 1060 nm) / (an oxygen concentration), of 3.0 or more.

IPC Classes  ?

  • B33Y 10/00 - Processes of additive manufacturing
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B22F 3/16 - Both compacting and sintering in successive or repeated steps
  • B22F 9/08 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
  • B22F 9/10 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying using centrifugal force
  • C22C 9/00 - Alloys based on copper

22.

LITHIUM RECOVERY METHOD

      
Document Number 03058314
Status In Force
Filing Date 2018-03-28
Open to Public Date 2018-10-04
Grant Date 2022-08-16
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor Arakawa, Junichi

Abstract

This lithium recovery method separates sodium from a lithium-containing solution including lithium ions and sodium ions and recovers lithium. The lithium recovery method has a solvent extraction step including: an at least three-stage extraction process having a first extraction process, a second extraction process, and a third extraction process: and a lithium back-extraction process that back-extracts lithium ions from the solvent that has passed through the at least three-stage extraction process. During the extraction process, the solvent passes through each of the processes being the first extraction process, the second extraction process, and the third extraction process, in order, and the lithium-containing solution passes through each process in the reverse order to the order for the solvent.

IPC Classes  ?

  • C22B 26/12 - Obtaining lithium
  • C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
  • C22B 3/32 - Carboxylic acids
  • C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
  • C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
  • C22B 23/00 - Obtaining nickel or cobalt
  • C22B 47/00 - Obtaining manganese

23.

LITHIUM ION BATTERY SCRAP TREATMENT METHOD

      
Document Number 03058572
Status In Force
Filing Date 2018-03-29
Open to Public Date 2018-10-04
Grant Date 2023-06-06
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Arakawa,junichi
  • Haga,yasufumi
  • Ito,junichi

Abstract

The present invention relates to methods for treating lithium ion battery scrap to recover valuable metals at a high recovery rate and low cost. In embodiments, the present invention provides a method for treating lithium ion battery scrap to recover Li, Ni (when present), Co, Mn, Al, Cu and Fe by subjecting the lithium ion battery scrap to: a calcination step, a crushing step, a sieving step, a leaching step, a Fe/Al removal step, an Al/Mn extraction step, a Co recovery step, a Ni recovery process, a Li concentration step, a neutralization step and a Li recovery step in this order. The conditions of the Al removal process are controlled to remove a part of Al while preventing loss of Co and Ni caused by coprecipitation with Al. The method may be varied for example by omitting the Ni recovery step and/or the neutralization step.

IPC Classes  ?

  • C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
  • B09B 3/80 - Destroying solid waste or transforming solid waste into something useful or harmless involving an extraction step
  • B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
  • B09B 5/00 - Operations not covered by a single other subclass or by a single other group in this subclass
  • C22B 1/00 - Preliminary treatment of ores or scrap
  • C22B 1/02 - Roasting processes
  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
  • C22B 3/08 - Sulfuric acid
  • C22B 3/32 - Carboxylic acids
  • C22B 3/38 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
  • C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
  • C22B 15/00 - Obtaining copper
  • C22B 21/00 - Obtaining aluminium
  • C22B 23/00 - Obtaining nickel or cobalt
  • C22B 26/12 - Obtaining lithium
  • C22B 47/00 - Obtaining manganese
  • H01M 10/54 - Reclaiming serviceable parts of waste accumulators

24.

PEPTIDE BINDING TO ARSENIC-CONTAINING MINERAL AND USE THEREOF

      
Document Number 03037119
Status In Force
Filing Date 2017-09-15
Open to Public Date 2018-03-22
Grant Date 2022-10-11
Owner
  • SHIBAURA INSTITUTE OF TECHNOLOGY (Japan)
  • JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Yamashita, Mitsuo
  • Miura, Akira

Abstract

(Technical problems to be solved) Providing a method for selecting minerals containing arsenic (Means for solving the problems) A peptide comprising an amino acids sequence according to the following formula: (TSNQ)-(HPW)-(ED)-(HPWRK)-(LIVFA)-(LIVFA)-(LIVFA)-(TSNQ)-(HPW)-(LIVFA)-(TSNQ)-(LIVFA) wherein one amino acid is respectively selected from each group defined by paired parentheses.

IPC Classes  ?

  • C07K 7/08 - Linear peptides containing only normal peptide links having 12 to 20 amino acids
  • B03D 1/00 - Flotation
  • C22B 1/11 - Removing sulfur, phosphorus or arsenic, other than by roasting

25.

VIRUS COMPOSITION AND METHOD FOR SEPARATION USING SAME

      
Document Number 03026796
Status In Force
Filing Date 2017-06-06
Open to Public Date 2017-12-14
Grant Date 2023-09-05
Owner
  • SHIBAURA INSTITUTE OF TECHNOLOGY (Japan)
  • JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Yamashita, Mitsuo
  • Miura, Akira

Abstract

[Problem] To provide a method for selecting a molybdenum mineral. [Solution] A composition which comprises M13 phage, wherein the composition is for separating a substance containing molybdenum.

IPC Classes  ?

  • C12P 3/00 - Preparation of elements or inorganic compounds except carbon dioxide
  • C12N 7/01 - Viruses, e.g. bacteriophages, modified by introduction of foreign genetic material
  • C12N 15/09 - Recombinant DNA-technology

26.

A NOVEL PEPTIDE AND USE THEREOF

      
Document Number 03026798
Status In Force
Filing Date 2017-06-06
Open to Public Date 2017-12-14
Grant Date 2022-08-16
Owner
  • SHIBAURA INSTITUTE OF TECHNOLOGY (Japan)
  • JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Yamashita, Mitsuo
  • Miura, Akira

Abstract

(Technical problems to be solved) Providing a method for selecting an mineral of molybdenum. (Means for solving the problems) A peptide comprising an amino acids sequence according the following formula (1) and/or (2): (1) (ALRKNMDFCPQSETGWHYIV)-(LIVFA)-(HPWRK)-(TSNQ)-(TSNQ)-(LIVFA)-(TSNQ)-(TSNQ)-(LIVFA)-(FYW)-(LIVFA)-(HPWRK) (2) (LIVFA)-(RHK)-(TSNQ)-(LIVFA)-(LIVFA)-(TSNQ)-(LIVFA)-(LIVFA)-(LIVFA)-(RHK)-(RHK)-(HPW) wherein one amino acid is respectively selected from each group defined by paired parentheses.

IPC Classes  ?

  • C07K 7/08 - Linear peptides containing only normal peptide links having 12 to 20 amino acids
  • C22B 34/34 - Obtaining molybdenum

27.

METHOD FOR RECOVERING GOLD FROM AN ORE OR A REFINING INTERMEDIATE CONTAINING GOLD

      
Document Number 03011611
Status In Force
Filing Date 2017-03-30
Open to Public Date 2017-10-05
Grant Date 2022-09-06
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Yoshimura, Akira
  • Abe, Yoshifumi

Abstract

The present invention provides a method for recovering gold in an ore or a refining intermediate which can contribute to improve the recovery rate of gold. The method for recovering gold from an ore or a refining interrnediate containing gold comprises a step of contacting a gold-containing raw material obtained from the ore or the refining intermediate with an acidic solution containing a copper ion, an iron ion and a halide ion while supplying an oxidizing agent to leach the gold component in the raw material, and the halide ion in the acidic solution comprising at least a bromide ion, wherein the concentration of the bromide ion is less than 100 g/L, a concentration ratio of the halide ions in the acidic solution is such that a ratio of the concentration of the chloride ion to the concentration of the bromide ion (a Cl/Br concentration ratio) is 1/3 or less.

IPC Classes  ?

  • C22B 3/10 - Hydrochloric acid
  • C22B 3/00 - Extraction of metal compounds from ores or concentrates by wet processes
  • C22B 11/00 - Obtaining noble metals

28.

ACTIVATED CARBON REGENERATION METHOD AND GOLD RECOVERY METHOD

      
Document Number 02978693
Status In Force
Filing Date 2016-03-03
Open to Public Date 2016-09-15
Grant Date 2020-06-30
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hatano, Kazuhiro
  • Yoshimura, Akira
  • Tatsumi, Ryosuke

Abstract

An activated carbon regeneration method of the present invention is for eluting gold from activated carbon on which the gold has been adsorbed and thereafter recycling, in adsorption of the gold, the used activated carbon from which the gold has been eluted, the method including: washing the used activated carbon with an acidic washing liquid, alkaline washing liquid or neutral washing liquid; and when the used activated carbon is washed with the acidic washing liquid, keeping the acidic washing liquid after the washing in an acidic region, or when the used activated carbon is washed with the alkaline washing liquid or neutral washing liquid, keeping the alkaline washing liquid or neutral washing liquid after the washing in an alkaline region or neutral region.

IPC Classes  ?

  • B01J 20/34 - Regenerating or reactivating
  • C01B 32/30 - Active carbon
  • C01G 7/00 - Compounds of gold
  • C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
  • C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
  • C22B 11/00 - Obtaining noble metals

29.

METHOD FOR RECOVERING GOLD FROM ACTIVATED CARBON

      
Document Number 02972351
Status In Force
Filing Date 2015-12-04
Open to Public Date 2016-06-30
Grant Date 2020-08-25
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hatano, Kazuhiro
  • Yoshimura, Akira
  • Tatsumi, Ryosuke

Abstract

The purpose of the present invention is to make it possible: to, before gold is eluted, effectively remove copper, iron, and sulfur, which are impurities from the standpoint of gold recovery, from activated carbon on which gold has been adsorbed; and to efficiently elute the gold. Provided is a method for eluting gold (Au) from activated carbon on which at least sulfur (S) and Au have been adsorbed, the method comprising cleaning the activated carbon with an alkali before gold is eluted and thereafter eluting the Au.

IPC Classes  ?

  • C22B 11/00 - Obtaining noble metals
  • B01J 20/20 - Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
  • B01J 20/34 - Regenerating or reactivating
  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching

30.

METHOD FOR PROCESSING ARSENIC AND ARSENIC-CONTAINING COMPOUND

      
Document Number 02944421
Status In Force
Filing Date 2015-03-23
Open to Public Date 2015-10-08
Grant Date 2018-12-04
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Tatsumi,ryosuke
  • Hatano,kazuhiro

Abstract

Provided is a processing method for arsenic, with which it is possible for the arsenic that is contained in copper ore containing arsenic to be processed into a stable form suitable for long-term storage and preservation . This arsenic processing method is characterized by including: a roasting step for roasting copper ore containing arsenic in a non-oxidative atmosphere, and separating the copper pyrites from the volatiles that contain arsenic sulfides; a heat treatment step for heat treating the volatiles obtained in the roasting step, in a non-oxidative atmosphere, causing the arsenic sulfides in the volatiles to melt; a grinding step for grinding the volatiles subsequent to the heat treatment step; and a remelting step for heating and remelting the volatiles subsequent to the grinding step.

IPC Classes  ?

31.

PRETREATED GOLD ORE

      
Document Number 02899053
Status In Force
Filing Date 2014-04-10
Open to Public Date 2014-10-16
Grant Date 2018-08-21
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hatano, Kazuhiro
  • Aoto, Yuki
  • Nakamura, Takeshi

Abstract

The present invention provides a pretreated gold ore suitable for hydrometallurgically recovering gold from gold ore containing pyrite. A pretreated gold ore for hydrometallurgically recovering gold from gold ore which contains pyrite (FeS2), wherein it has an accumulative pore volume for pores having a diameter of 3 to 5 µm that is twice or more times larger than prior to pretreatment.

IPC Classes  ?

  • C22B 1/00 - Preliminary treatment of ores or scrap

32.

METHOD OF PRETREATING GOLD ORE

      
Document Number 02898986
Status In Force
Filing Date 2013-04-10
Open to Public Date 2014-10-02
Grant Date 2019-01-08
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hatano, Kazuhiro
  • Aoto, Yuki

Abstract

The present invention provides a method of pretreating gold ore for leaching gold from gold ore containing pyrite that enables to enhance the gold-leaching speed while the generation of sulfur dioxide is suppressed. The method of pretreating gold ore for hydrometallurgically recovering gold from gold ore which contains pyrite (FeS2), the method comprising a step of converting pyrite contained in the gold ore to iron compound soluble to hydrochloric acid.

IPC Classes  ?

33.

METHOD OF RECOVERING GOLD FROM SULFIDE ORE

      
Document Number 02908364
Status In Force
Filing Date 2014-02-12
Open to Public Date 2014-10-02
Grant Date 2017-11-21
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hatano, Kazuhiro
  • Katsukawa, Koji
  • Sano, Masaki

Abstract

Disclosed is A method of recovering gold from sulfide ores comprising: Step 1 for contacting sulfide ores or a leaching residue obtained after sulfide ores are leached with a acidic aqueous solution containing chlorine ions, bromine ions, copper ions and iron ions with supplying an oxidizing agent to leach the gold content in the leaching residue; Step 2 for storing the post-gold-leaching solution obtained by leaching the gold content and keeping a concentration of bromine ions in the post-gold-leaching solution at 40 g/L or higher, and the oxidation-reduction potential (reference electrode: silver/silver chloride) at 500 mV or greater; Step 3 for adding copper(I) chloride to the post-gold-leaching solution thus obtained in Step 2, and then adding an oxidizing agent to adjust the oxidation-reduction potential to 520 mV or greater, to thereby reduce monovalent copper ions in the post-gold-leaching solution; and Step 4 for adsorbing gold in the post-gold-leaching solution thus obtained in Step 3 to activated carbon.

IPC Classes  ?

  • C22B 11/00 - Obtaining noble metals
  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
  • C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins

34.

METHOD OF RECOVERING GOLD FROM GOLD ORES CONTAINING PYRITE

      
Document Number 02908370
Status In Force
Filing Date 2014-02-12
Open to Public Date 2014-10-02
Grant Date 2017-11-07
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hatano, Kazuhiro
  • Katsukawa, Koji
  • Sano, Masaki
  • Aoto, Yuki
  • Nakamura, Takeshi

Abstract

This method for recovering gold from gold ore containing pyrite comprises: a pretreatment step which includes a first step in which gold ore containing pyrite is prepared and a second step in which the gold ore is heated to a temperature of at least 450°C in an inert atmosphere, and the pyrite in the gold ore is pyrolyzed into iron sulfide (II) and elemental sulfur, and which does not contain an oxidizing roasting step; a third step in which gold ore having been subjected to the pretreatment step is brought into contact with gold leaching solution containing chloride ions, bromide ions, and iron ions while being supplied with an oxidizing agent, thereby leaching out the gold component in the ore; a fourth step in which, after adding to the solution obtained by leaching the gold component in step 3, an oxidizing agent is added to adjust the redox potential to at least 520mV, reducing the quantity of monovalent copper ions in the gold leachate; and a fifth step in which the gold in the gold leachate obtained in the fourth step is adsorbed by activated carbon.

IPC Classes  ?

  • C22B 11/00 - Obtaining noble metals
  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
  • C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins

35.

METHOD OF RECOVERING GOLD FROM SULFIDE ORE

      
Document Number 02908688
Status In Force
Filing Date 2014-02-12
Open to Public Date 2014-10-02
Grant Date 2017-09-26
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hatano, Kazuhiro
  • Katsukawa, Koji
  • Sano, Masaki

Abstract

Disclosed is a method of recovering gold from sulfide ores comprising: Step 1 for contacting a first acidic aqueous solution to sulfide ores with supplying an oxidizing agent to leach the copper content in the sulfide ores, said first acidic aqueous solution containing chlorine ions, copper ions and iron ions with no bromine ions; Step 2 for subjecting the leaching reaction solution thus obtained in Step 1 to solid-liquid separation to separate a leaching residue and a post-leaching solution; Step 3 for contacting a second acidic aqueous solution to said leaching residue thus obtained in Step 2 with supplying an oxidizing agent to leach the gold content in the residue, said second acidic aqueous solution containing chlorine ions, bromine ions, copper ions and iron ions; Step 4 for adding copper(I) chloride to the post-gold-leaching solution thus obtained in Step 3, and then adding an oxidizing agent to adjust the oxidation-reduction potential to 520 mV or greater, to thereby reduce monovalent copper ions in the post-gold-leaching solution; and Step 5 for adsorbing gold in the post-gold-leaching solution thus obtained in Step 4 to activated carbon.

IPC Classes  ?

  • C22B 11/00 - Obtaining noble metals
  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
  • C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins

36.

METHOD FOR PROCESSING ARSENIC

      
Document Number 02847573
Status In Force
Filing Date 2014-03-25
Open to Public Date 2014-09-29
Grant Date 2016-10-04
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Tatsumi, Ryosuke
  • Hatano, Kazuhiro

Abstract

A method for processing arsenic which includes a roasting process in which an arsenic-containing copper ore is roasted in an inert gas atmosphere to separate chalcopyrite from a volatile matter containing sulfides of arsenic; and a heat treatment process in which sulfur and an antioxidant are added to the volatile matter obtained in the roasting process followed by heat-treating in the inert gas atmosphere for dissolving sulfides of arsenic in the volatile matter.

IPC Classes  ?

37.

METHOD OF ELUTING GOLD AND SILVER AND METHOD OF RECOVERING GOLD AND SILVER USING THE SAME

      
Document Number 02898409
Status In Force
Filing Date 2013-02-28
Open to Public Date 2014-09-04
Grant Date 2017-09-19
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hatano, Kazuhiro
  • Katsukawa, Koji
  • Ono, Eiki
  • Sano, Masaki
  • Aoto, Yuki
  • Imagawa, Harue

Abstract

Gold included in metal sulfide can be efficiently adsorbed on activated carbon and gold and silver adsorbed on the activated carbon can be efficiently eluted. The method of eluting gold and silver comprises: leaching gold and silver using acidic leachate which includes chloride ions and/or bromide ions as anions and copper and iron as cations from sulfide ore bearing gold and silver to the acidic leachate by heating; adsorbing at least the gold and silver in the acidic leachate on activated carbon; and eluting gold and silver on activated carbon, on which at least the gold and silver are adsorbed, by using an aqueous thiosulfate solution that is maintained at less than pH 7.

IPC Classes  ?

  • C22B 11/00 - Obtaining noble metals
  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
  • C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins

38.

METHOD FOR LEACHING GOLD FROM GOLD ORE CONTAINING PYRITE

      
Document Number 02898420
Status In Force
Filing Date 2013-04-10
Open to Public Date 2014-09-04
Grant Date 2017-12-05
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hatano, Kazuhiro
  • Aoto, Yuki
  • Katsukawa, Koji

Abstract

Provided is a method for leaching gold from gold ore containing pyrite. Said method for leaching gold includes a pretreatment step that includes a step (1) in which gold ore containing pyrite is prepared, and a step (2) in which the gold ore is heated to 450°C or higher, and the pyrite in the gold ore is thermally decomposed into iron(II) sulfide and elemental sulfur. Said method for leaching gold further includes a leaching step that includes: a step (3) in which the pretreated gold ore is brought into contact with an iron leaching solution containing any one or more substances selected from sulfuric acid, hydrochloric acid, and Fe3+ aqueous salt solution to leach out iron components in the ore, and then solid-liquid separation is conducted on the iron leachate and residue; and a step (4) in which the residue obtained in step (3) is brought into contact with a gold leaching solution, which contains halide ions, copper ions and iron ions, while being supplied with an oxidant, to leach out gold components in the residue. Said method for leaching gold further includes an iron leaching solution regeneration step (5) in which the iron content is precipitated in an iron oxyhydroxide form, and removed from the iron leachate obtained in step (3).

IPC Classes  ?

  • C22B 11/00 - Obtaining noble metals
  • C22B 1/02 - Roasting processes
  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
  • C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes

39.

METHOD FOR LEACHING GOLD FROM GOLD ORE CONTAINING PYRITE

      
Document Number 02897470
Status In Force
Filing Date 2013-04-10
Open to Public Date 2014-08-14
Grant Date 2017-09-19
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hatano, Kazuhiro
  • Aoto, Yuki
  • Nakamura, Takeshi

Abstract

A method for leaching gold from a gold ore containing pyrite, in which the gold leaching rate is improved without requiring the use of a highly toxic chemical substance such as cyan, thiourea, thiosulfuric acid and a halogen gas. A method for leaching gold, comprising: a pretreatment step comprising a step (1) of providing a gold ore containing pyrite and a step (2) of oxidizing and roasting the gold ore; and a step (3) of bringing the pretreated gold ore into contact with a gold-leaching solution containing a halide ion while supplying an oxidizing agent to thereby leach a gold component from the ore and then carrying out the solid/liquid separation of the resultant product into a solution having gold leached therein and an iron-containing residue.

IPC Classes  ?

  • C22B 11/00 - Obtaining noble metals
  • C22B 1/02 - Roasting processes
  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching

40.

METHOD FOR COLLECTING SILVER

      
Document Number 02889969
Status In Force
Filing Date 2013-10-29
Open to Public Date 2014-05-08
Grant Date 2019-01-08
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Ono, Eiki
  • Hatano, Kazuhiro

Abstract

A method for efficiently collecting high-purity silver from an acidic aqueous solution containing silver and at least one of iron and zinc with a simple device is provided. The method for collecting silver includes separating silver and at least one of iron and zinc from an acidic aqueous solution containing silver and at least one of iron and zinc by solvent extraction using tributyl phosphate as an extractant.

IPC Classes  ?

  • C22B 11/00 - Obtaining noble metals
  • B01D 11/04 - Solvent extraction of solutions which are liquid
  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
  • C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
  • C22B 3/46 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes by substitution, e.g. by cementation
  • C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof

41.

METHOD FOR COLLECTING SILVER

      
Document Number 02973106
Status In Force
Filing Date 2013-10-29
Open to Public Date 2014-05-08
Grant Date 2018-07-10
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Ono, Eiki
  • Hatano, Kazuhiro

Abstract

A method for efficiently collecting high-purity silver from an acidic aqueous solution containing silver and at least one of iron and zinc with a simple device is provided. The method for collecting silver includes separating silver and at least one of iron and zinc from an acidic aqueous solution containing silver and at least one of iron and zinc by solvent extraction using tributyl phosphate as an extractant.

IPC Classes  ?

  • C22B 3/38 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
  • C22B 11/00 - Obtaining noble metals

42.

METHOD FOR RECOVERING GOLD

      
Document Number 02884363
Status In Force
Filing Date 2013-09-09
Open to Public Date 2014-03-20
Grant Date 2018-03-20
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hatano, Kazuhiro
  • Katsukawa, Koji
  • Sano, Masaki

Abstract

Provided is a method for recovering gold, which enables the amount of gold adsorbed on activated carbon to be increased. The method for recovering gold includes: leaching gold into an acidic leaching solution containing chloride ions and/or bromide ions as anions and copper as cations for producing a gold leachate; and adsorbing gold in the gold leachate on activated carbon, wherein the method further comprises the step of adjusting the oxidation-reduction potential of the gold leachate (reference electrode: silver/silver chloride) prior to adsorbing gold in the gold leachate on the activated carbon for reducing a concentration of monovalent copper ions contained in the gold leachate.

IPC Classes  ?

  • C22B 11/00 - Obtaining noble metals
  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
  • C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins

43.

METHOD FOR LEACHING GOLD FROM GOLD ORE CONTAINING PYRITE

      
Document Number 02880943
Status In Force
Filing Date 2013-04-10
Open to Public Date 2014-03-13
Grant Date 2017-01-17
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hatano, Kazuhiro
  • Aoto, Yuki
  • Katsukawa, Koji

Abstract

The present invention improves the leaching speed of gold while also inhibiting the generation of sulfur dioxide in a method for leaching gold from gold ore containing pyrite without using highly poisonous chemicals such as cyanogen, thiourea, thiosulfuric acid, and halogen gas. A method for leaching gold involving: pre-treatment steps which include a step (1) for preparing a gold ore containing pyrite and a step (2) for heating the gold ore to 450°C or higher in a non-oxidizing atmosphere and for pyrolyzing the pyrite within the gold ore into iron sulfide (II) and elemental sulfur, and which does not include an oxidation roasting step; and a step (3) for leaching the gold component within the ore by bringing the gold ore that was subjected to the pre-treatment steps into contact with a gold leaching solution containing chloride ions, bromide ions, and iron ions while an oxidizing agent is supplied.

IPC Classes  ?

  • C22B 11/00 - Obtaining noble metals
  • C22B 1/02 - Roasting processes
  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching

44.

METHOD OF ELUTING GOLD AND SILVER ADSORBED ON ACTIVATED CARBON AND METHOD OF RECOVERING GOLD AND SILVER USING THE SAME

      
Document Number 02868296
Status In Force
Filing Date 2013-01-31
Open to Public Date 2013-10-03
Grant Date 2018-01-23
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hatano, Kazuhiro
  • Katsukawa, Koji
  • Ono, Eiki
  • Sano, Masaki
  • Aoto, Yuki

Abstract

Gold and silver adsorbed on activated carbon are efficiently eluted. The method of eluting gold and silver adsorbed on activated carbon, the method comprises: eluting gold and silver on activated carbon, on which at least the gold and silver are adsorbed, by using an aqueous thiosulfate solution that is maintained at less than pH 7.

IPC Classes  ?

  • C22B 11/00 - Obtaining noble metals
  • B01J 20/20 - Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
  • B01J 20/34 - Regenerating or reactivating
  • C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins

45.

METALLIC MATERIAL FOR ELECTRONIC COMPONENTS, AND CONNECTOR TERMINALS, CONNECTORS AND ELECTRONIC COMPONENTS USING SAME

      
Document Number 02879453
Status In Force
Filing Date 2013-01-25
Open to Public Date 2013-09-26
Grant Date 2017-07-18
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Shibuya, Yoshitaka
  • Fukamachi, Kazuhiko
  • Kodama, Atsushi

Abstract

The present invention provides a metallic material for electronic components having a low degree of whisker formation and a high durability, and connector terminals, connectors and electronic components using the metallic material. The metallic material for electronic components includes: a base material; on the base material, an lower layer constituted with one or two or more selected from the group consisting of Ni, Cr, Mn, Fe, Co and Cu; on the lower layer, an upper layer constituted with an alloy composed of one or both of Sn and In (constituent elements A) and one or two or more of Ag, Au, Pt, Pd, Ru, Rh, Os and Ir (constituent elements B), wherein the thickness of the lower layer is 0.05 µm or more; the thickness of the upper layer is 0.005 µm or more and 0.6 µm or less; and in the upper layer, the relation between the ratio, the constituent elements A/(the constituent elements A + the constituent elements B) [mass%] (hereinafter, referred to as the proportion of Sn + In) and the plating thickness [µm] is given by plating thickness <= 8.2 × (proportion of Sn + In) - 0.66 [herein, (the proportion of Sn + In) >= 10 mass%].

IPC Classes  ?

  • C23C 28/02 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of metallic material
  • C22C 5/02 - Alloys based on gold
  • C22C 5/04 - Alloys based on a platinum group metal
  • C22C 5/06 - Alloys based on silver
  • C22C 5/08 - Alloys based on silver with copper as the next major constituent
  • C22C 5/10 - Alloys based on silver with cadmium as the next major constituent
  • C22C 9/00 - Alloys based on copper
  • C22C 9/02 - Alloys based on copper with tin as the next major constituent
  • C22C 9/04 - Alloys based on copper with zinc as the next major constituent
  • C22C 9/05 - Alloys based on copper with manganese as the next major constituent
  • C22C 9/06 - Alloys based on copper with nickel or cobalt as the next major constituent
  • C22C 13/00 - Alloys based on tin
  • C22C 13/02 - Alloys based on tin with antimony or bismuth as the next major constituent
  • C22C 19/03 - Alloys based on nickel or cobalt based on nickel
  • C22C 19/07 - Alloys based on nickel or cobalt based on cobalt
  • C22C 22/00 - Alloys based on manganese
  • C22C 27/06 - Alloys based on chromium
  • C22C 28/00 - Alloys based on a metal not provided for in groups
  • C22C 38/00 - Ferrous alloys, e.g. steel alloys
  • C23C 14/14 - Metallic material, boron or silicon
  • H01B 1/02 - Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
  • H01B 5/02 - Single bars, rods, wires or strips; Bus-bars
  • H01B 7/00 - Insulated conductors or cables characterised by their form
  • H01R 13/03 - Contact members characterised by the material, e.g. plating or coating materials
  • H05K 1/09 - Use of materials for the metallic pattern

46.

METHOD OF RECOVERING GOLD ADSORBED ON ACTIVATED CARBON AND METHOD OF MANUFACTURING GOLD USING THE SAME

      
Document Number 02865721
Status In Force
Filing Date 2013-01-30
Open to Public Date 2013-09-06
Grant Date 2017-08-01
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hatano, Kazuhiro
  • Katsukawa, Koji
  • Ono, Eiki
  • Sano, Masaki

Abstract

Gold adsorbed by activated carbon is efficiently recovered at low cost. The method of recovering gold comprises eluting gold adsorbed by activated carbon with an eluent prepared by adding thiosulfate to an acidic aqueous solution to obtain an acidic concentrated gold solution.

IPC Classes  ?

  • C22B 11/00 - Obtaining noble metals
  • B01J 20/20 - Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
  • B01J 20/34 - Regenerating or reactivating
  • C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins

47.

METHOD OF RECOVERING GOLD AND METHOD OF MANUFACTURING GOLD USING THE SAME

      
Document Number 02861419
Status In Force
Filing Date 2012-11-16
Open to Public Date 2013-07-25
Grant Date 2016-06-07
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hatano, Kazuhiro
  • Katsukawa, Koji
  • Ono, Eiki
  • Sano, Masaki

Abstract

Gold included in metal sulfide ore is efficiently recovered at low cost. The method of recovering gold comprises leaching gold using acidic leachate which includes chloride ions and/or bromide ions as anions and copper and iron as cations from gold-bearing sulfide ore to the acidic leachate onto heating; adsorbing the gold in the acidic leachate by activated carbon; and eluting the gold adsorbed on the activated carbon with an alkali solution to obtain a concentrated gold solution.

IPC Classes  ?

  • C22B 11/00 - Obtaining noble metals
  • B01D 15/00 - Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
  • B01J 20/20 - Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
  • B01J 20/34 - Regenerating or reactivating
  • C02F 1/28 - Treatment of water, waste water, or sewage by sorption
  • C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins

48.

METAL MATERIAL FOR ELECTRONIC COMPONENT AND METHOD FOR MANUFACTURING THE SAME

      
Document Number 02849410
Status In Force
Filing Date 2012-09-10
Open to Public Date 2013-03-28
Grant Date 2016-05-31
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Shibuya, Yoshitaka
  • Fukamachi, Kazuhiko
  • Kodama, Atsushi

Abstract

There are provided a metal material for electronic component which has low insertability/extractability, low whisker formability, and high durability, and a method for manufacturing the metal material. The metal material for electronic components has a base material 11, an A layer 14 constituting a surface layer on the base material 11 and formed of Sn, In or an alloy thereof, and a B layer 13 constituting a middle layer provided between the base material 11 and the A layer 14 and formed of Ag, Au, Pt, Pd, Ru, Rh, Os, Ir or an alloy thereof, wherein the surface layer (A layer) 14 has a thickness of 0.002 to 0.2 µm, and the middle layer (B layer) 13 has a thickness of 0.001 to 0.3 µm.

IPC Classes  ?

  • C25D 7/00 - Electroplating characterised by the article coated
  • B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
  • B32B 15/04 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
  • C22C 5/02 - Alloys based on gold
  • C22C 5/04 - Alloys based on a platinum group metal
  • C22C 5/06 - Alloys based on silver
  • C22C 5/08 - Alloys based on silver with copper as the next major constituent
  • C22C 5/10 - Alloys based on silver with cadmium as the next major constituent
  • C22C 9/00 - Alloys based on copper
  • C22C 9/02 - Alloys based on copper with tin as the next major constituent
  • C22C 9/04 - Alloys based on copper with zinc as the next major constituent
  • C22C 9/05 - Alloys based on copper with manganese as the next major constituent
  • C22C 9/06 - Alloys based on copper with nickel or cobalt as the next major constituent
  • C22C 13/00 - Alloys based on tin
  • C22C 19/03 - Alloys based on nickel or cobalt based on nickel
  • C22C 19/07 - Alloys based on nickel or cobalt based on cobalt
  • C22C 22/00 - Alloys based on manganese
  • C22C 27/06 - Alloys based on chromium
  • C22C 30/06 - Alloys containing less than 50% by weight of each constituent containing zinc
  • C22C 38/00 - Ferrous alloys, e.g. steel alloys
  • C23C 14/14 - Metallic material, boron or silicon
  • C25D 5/10 - Electroplating with more than one layer of the same or of different metals
  • H01R 13/03 - Contact members characterised by the material, e.g. plating or coating materials
  • H05K 1/09 - Use of materials for the metallic pattern

49.

HIGH-PURITY YTTRIUM, PROCESS OF PRODUCING HIGH-PURITY YTTRIUM, HIGH-PURITY YTTRIUM SPUTTERING TARGET, METAL GATE FILM DEPOSITED WITH HIGH-PURITY YTTRIUM SPUTTERING TARGET, AND SEMICONDUCTOR ELEMENT AND DEVICE EQUIPPED WITH THE METAL GATE FILM

      
Document Number 02840720
Status In Force
Filing Date 2011-09-15
Open to Public Date 2013-01-10
Grant Date 2018-02-13
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor Takahata, Masahiro

Abstract

Provided are high-purity yttrium and a high-purity yttrium sputtering target each having a purity, excluding rare earth elements and gas components, of 5 N or more and containing 1 wt ppm or less of each of Al, Fe, and Cu; a method of producing high-purity yttrium by molten salt electrolysis of a raw material being a crude yttrium oxide having a purity, excluding gas components, of 4N or less at a bath temperature of 500°C to 800°C to obtain yttrium crystals, desalting treatment, water washing, and drying of the yttrium crystals, and then electron beam melting for removing volatile materials to achieve a purity, excluding rare earth elements and gas components, of 5N or more; and a technology capable of efficiently and stably providing high- purity yttrium, a sputtering target composed of the high-purity yttrium, and a metal- gate thin film mainly composed of the high-purity yttrium.

IPC Classes  ?

  • C22B 59/00 - Obtaining rare earth metals
  • C22B 9/02 - Refining by liquating, filtering, centrifuging, distilling or supersonic wave action
  • C22C 28/00 - Alloys based on a metal not provided for in groups
  • C23C 14/34 - Sputtering
  • C25C 3/34 - Electrolytic production, recovery or refining of metals by electrolysis of melts of metals not provided for in groups

50.

METHOD FOR PRODUCING HIGH-PURITY LANTHANUM, HIGH-PURITY LANTHANUM, SPUTTERING TARGET FORMED FROM HIGH-PURITY LANTHANUM, AND METAL GATE FILM HAVING HIGH-PURITY LANTHANUM AS MAIN COMPONENT

      
Document Number 02825301
Status In Force
Filing Date 2012-01-17
Open to Public Date 2012-07-26
Grant Date 2015-05-12
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Takahata, Masahiro
  • Satoh, Kazuyuki
  • Narita, Satoyasu
  • Gohara, Takeshi

Abstract

The present invention addresses the problem of providing a technique capable of efficiently and stably providing a method for producing high-purity lanthanum, the method characterized in that: a crude lanthanum oxide starting material having a purity of 2N-3N, excluding gas components, is used; the material is subjected to molten salt electrolysis at a bath temperature of 450- 700°C to produce lanthanum crystals; the lanthanum crystals are subsequently desalted: and electron beam melting is then performed to remove volatile substances. The present invention also addresses the problem of providing a technique capable of efficiently and stably providing high-purity lanthanum, high-purity lanthanum itself, a sputtering target formed from high-purity material lanthanum; and a thin film for metal gates that has high purity lanthanum as the main component.

IPC Classes  ?

  • C25C 3/34 - Electrolytic production, recovery or refining of metals by electrolysis of melts of metals not provided for in groups
  • C22B 9/22 - Remelting metals with heating by wave energy or particle radiation
  • C22B 59/00 - Obtaining rare earth metals
  • C22C 28/00 - Alloys based on a metal not provided for in groups
  • H01L 29/51 - Insulating materials associated therewith

51.

RECOVERY METHOD FOR COBALT

      
Document Number 02732486
Status In Force
Filing Date 2011-02-23
Open to Public Date 2011-09-17
Grant Date 2013-04-02
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Ono, Eiki
  • Abe, Yoshifumi
  • Hatano, Kazuhiro
  • Hosaka, Hiroshi

Abstract

A recovery method for cobalt, wherein copper is removed from acid aqueous solution in which copper and cobalt are contained and concentration rate of Cu/Co is more or equal to 5, by a combination of a solvent extraction using cationic exchange extracting agent and a adsorption using cationic exchange resin, and then cobalt is recovered as electrolytic cobalt by a combination of a solvent extraction and an electrowinning, and (1) the acid aqueous solution contains more or equal to 10g/L of copper and less or equal to 5g/L of cobalt, (2) the cationic exchange extracting agent is an oxime series extract agent, and (3) the cationic exchange resin is an acid chelate resin.

IPC Classes  ?

  • C25C 1/08 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of iron group metals, refractory metals or manganese of nickel or cobalt
  • C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
  • C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
  • C22B 3/42 - Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
  • C22B 23/00 - Obtaining nickel or cobalt

52.

RECOVERY METHOD FOR COBALT CONTAINED IN COPPER-CONTAINING SOLUTION

      
Document Number 02732187
Status In Force
Filing Date 2011-02-18
Open to Public Date 2011-09-02
Grant Date 2013-07-09
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Ono, Eiki
  • Abe, Yoshifumi
  • Hatano, Kazuhiro
  • Hosaka, Hiroshi

Abstract

A recovery method for cobalt, wherein copper is removed from acid aqueous solution in which a concentration of copper is more or equal to 10g/L, a concentration of cobalt is less or equal to 5g/L and concentration rate of Cu/Co is more or equal to 5 by a combination of a solvent extraction using an extract agent except oxime series extract agents and a resin adsorption, and then cobalt contained in the copper-removed solution is recovered as electrolytic cobalt by a combination of a solvent extraction and an electrowinning.

IPC Classes  ?

  • C25C 1/08 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of iron group metals, refractory metals or manganese of nickel or cobalt
  • C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
  • C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
  • C22B 23/00 - Obtaining nickel or cobalt

53.

METHOD OF HEAP OR DUMP LEACHING OF COPPER FROM COPPER SULFIDE ORE

      
Document Number 02686591
Status In Force
Filing Date 2009-11-27
Open to Public Date 2011-02-24
Grant Date 2012-12-11
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor Manabe, Manabu

Abstract

The object of the present invention is to provide a method of efficiently leaching copper not only from a readily-soluble copper ore but also a poorly-soluble copper sulfide ore partially containing or consisting of chalcopyrite and/or covellite by means of ore heap leaching under versatile conditions for actual operation. This invention relates to a method of leaching copper from a copper sulfide ore, comprising leaching copper from an ore comprising a copper sulfide ore by heap or dump leaching with the use of a sulfuric acid solution containing ferric (III) ions and iodide ions at a total iodine concentration of 8 to 100 mg/L as a leaching solution.

IPC Classes  ?

54.

METHOD OF RECOVERING SILVER USING ANION-EXCHANGE RESIN

      
Document Number 02660226
Status In Force
Filing Date 2009-03-25
Open to Public Date 2010-05-13
Grant Date 2013-08-13
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Hiai, Hiroshi
  • Abe, Yoshifumi

Abstract

The present invention provides a method of recovering silver safely and efficiently from a chloride or bromide bath containing various metals. Specifically, a method of recovering silver from a hydrochloric acid solution containing alkali and/or alkali earth metal chloride, silver, copper and iron ions, comprising the steps of: (1) bringing the solution into contact with a strong-base anion-exchange resin to adsorb silver, copper, and iron on the anion-exchange resin; (2) then washing the anion-exchange resin with water to remove the adsorbed copper and iron; and (3) then bringing the ion- exchange resin into contact with a hydrochloric acid solution to elute the adsorbed silver, is provided.

IPC Classes  ?

  • C22B 3/42 - Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
  • C22B 11/00 - Obtaining noble metals

55.

PROCESS FOR RECOVERY OF COPPER FROM COPPER-CONTAINING CHLORIDE MEDIA

      
Document Number 02648252
Status In Force
Filing Date 2008-12-30
Open to Public Date 2010-02-11
Grant Date 2015-08-11
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Abe, Yoshifumi
  • Hosaka, Hiroshi
  • Takebayashi, Kazuaki
  • Yoshimura, Akira
  • Nakamura, Takeshi

Abstract

A process for recovering copper from an acid aqueous solution containing cupric chlorides and alkali metal and/or alkali earth metal chlorides by a solvent extraction with a cation-exchange extractant, comprising the step of processing a solvent extraction in the presence of sulfate ions.

IPC Classes  ?

  • C22B 15/00 - Obtaining copper
  • C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
  • C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds

56.

PROCESS OF LEACHING GOLD

      
Document Number 02636122
Status In Force
Filing Date 2008-06-25
Open to Public Date 2009-09-27
Grant Date 2013-09-24
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Abe, Yoshifumi
  • Hosaka, Hiroshi
  • Takebayashi, Kazuaki
  • Ishiguro, Yasunari
  • Yoshimura, Akira

Abstract

A process of leaching gold comprising the steps of: a) leaching copper from copper sulfide ore material that contains gold or contains silicate ore containing gold until the copper grade is reduced to 7.9wt% or less; b) mixing the resulting material having a copper grade of 7.9 wt % or less with a gold leaching solution selected from the group consisting of a first solution containing chloride ions and ferric ions, and a second solution containing chloride ions and iron ions, the iron ions having been oxidized to trivalent ferric ions by air bubbled into the second solution; c) adjusting the pH of the gold leaching solution to 1.9 or less with stirring to leach at least gold in the material into the gold leaching solution by the oxidative activity of the ferric ions contained in the gold leaching solution, wherein the concentration of gold is reduced by selectively removing gold from part or all of the gold leaching solution during gold leaching. This process efficiently leaches at least copper and gold from a copper sulfide ore.

IPC Classes  ?

  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
  • C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
  • C22B 11/06 - Chloridising
  • C22B 11/00 - Obtaining noble metals
  • C22B 15/00 - Obtaining copper

57.

METHOD FOR RECOVERING METAL FROM ORE

      
Document Number 02639165
Status In Force
Filing Date 2008-08-28
Open to Public Date 2009-09-27
Grant Date 2013-07-30
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Abe, Yoshifumi
  • Hosaka, Hiroshi
  • Takebayashi, Kazuaki
  • Ishiguro, Yasunari
  • Yoshimura, Akira

Abstract

The copper sulfide ore is leached in the halide bath without using a special oxidant but with the use of only air. The copper and gold in the copper sulfide ore can be leached at high leaching ratio. The treating steps are as follows. (1) Copper leaching process (CL). The raw material is charged into the first acidic aqueous solution, which contains cupric chloride, ferric chloride, 7 g/L of hydrochloric acid, and sodium chloride. The post-leach liquor contains copper in cuprous state ions and copper in cupric state ions. (2) Solid-Liquid separation step. The resultant solid and liquid of CL step are separated. (3) Air oxidation step (OX). Air is blown into the post solid-liquid separation liquor. The copper in cuprous state ions are oxidized to the copper in cupric state ions. The iron leached in the step (1) is oxidized. Simultaneously, the impurities leached in the step (2) are precipitated. (4) Copper extracting step (CEX). The copper is recovered from the post-liquor of the step (3) (5) Gold recovering step (AL). The residue separated in the step (2) is added to the leach liquor similar to that of the step (1). The steps (1) and (5) are carried out under the atmospheric pressure and at the temperature of boiling point or lower, while blowing air into the leach liquor.

IPC Classes  ?

  • C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
  • C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
  • C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
  • C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
  • C22B 11/00 - Obtaining noble metals
  • C22B 15/00 - Obtaining copper

58.

METHOD OF OBTAINING COPPER FROM ORE

      
Document Number 02638395
Status In Force
Filing Date 2008-07-28
Open to Public Date 2009-09-27
Grant Date 2012-06-26
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Abe, Yoshifumi
  • Hosaka, Hiroshi
  • Takebayashi, Kazuaki
  • Ishiguro, Yasunari
  • Yoshimura, Akira

Abstract

A method of obtaining copper from feedstock includes: providing the feedstock into acid solution including chloride and bromide of one of alkali metal and alkali earth metal, and one of chloride of copper and iron and bromide of copper and iron; leaching monovalent copper and divalent copper with use of oxidizing power of an iron ion and / or copper ion, with air being blown into the acid solution under and atmospheric pressure at a temperature less than a boiling point of the acid solution; solid- liquid separating the acid solution; blowing air into the solution and oxidizing copper in the solution; coprecipitating iron and impurity; separating deposition including coprecipitate obtained in the coprecipitating from the solution after the coprecipitating; extracting copper from the solution after the separating; obtained the extracted copper into sulfuric acid solution as copper sulfate; and obtaining copper from the copper sulfate.

IPC Classes  ?

  • C22B 3/10 - Hydrochloric acid
  • C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
  • C22B 3/46 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes by substitution, e.g. by cementation
  • C22B 15/00 - Obtaining copper

59.

METHOD OF RECOVERING VALUABLE METAL FROM SCRAP CONTAINING CONDUCTIVE OXIDE

      
Document Number 02674069
Status In Force
Filing Date 2008-03-07
Open to Public Date 2008-10-02
Grant Date 2011-07-19
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Shindo, Yuichiro
  • Takemoto, Koichi

Abstract

Provided is a method of recovering valuable metal from oxide system scrap including the steps of performing electrolysis using an insoluble electrode as an anode and an oxide system scrap as a cathode, and recovering the scrap of the cathode as metal or suboxide. Specifically, this method enables the efficient recovery of valuable metal from oxide system scrap of an indium-tin oxide (ITO) sputtering target or oxide system scrap such as mill ends that arise during the production of such a sputtering target.

IPC Classes  ?

  • C25C 1/14 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of tin
  • C22B 1/02 - Roasting processes
  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
  • C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
  • C22B 5/12 - Dry processes by gases
  • C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
  • C22B 19/34 - Obtaining zinc oxide
  • C22B 25/06 - Obtaining tin from scrap, especially tin scrap
  • C22B 58/00 - Obtaining gallium or indium
  • C25C 1/16 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of zinc, cadmium or mercury
  • C25C 1/22 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of metals not provided for in groups

60.

METHOD FOR MANUFACTURING SCORODITE

      
Document Number 02618326
Status In Force
Filing Date 2008-01-22
Open to Public Date 2008-09-19
Grant Date 2011-02-22
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Kimura, Yukio
  • Katsura, Shigeo

Abstract

The present invention provides a method for manufacturing scorodite in which scorodite may be obtained. at high production efficiency and a high As concentration ratio. The present invention provides a method for manufacturing crystalline scorodite from acidic aqueous solution containing pentavalent As and trivalent Fe, the method comprising a step for adding a basic sodium compound to the acidic aqueous solution such that the sodium concentration in the acidic aqueous solution becomes larger than 0 g/L and equal to or less than 4 g/L.

IPC Classes  ?

  • C30B 7/14 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions the crystallising materials being formed by chemical reactions in the solution
  • C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
  • C30B 29/40 - AIIIBV compounds

61.

METHOD OF RECOVERING VALUABLE METAL FROM SCRAP CONTAINING CONDUCTIVE OXIDE

      
Document Number 02673834
Status In Force
Filing Date 2008-02-08
Open to Public Date 2008-08-21
Grant Date 2011-03-08
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Shindo, Yuichiro
  • Takemoto, Kouichi

Abstract

Proposed is a method of recovering valuable metal from scrap containing conductive oxide including the steps of using an insoluble electrode as either an anode or a cathode, using a scrap containing conductive oxide as the counter cathode or anode, performing electrolysis while periodically inverting the polarity, and recovering the scrap as hydroxide. With the foregoing method of recovering valuable metal from scrap containing conductive oxide, oxide system scrap is conductive oxide and a substance that can be reduced to metal or suboxide with hydrogen. This method enables the efficient recovery of valuable metal from sputtering target scrap containing conductive oxide or scrap such as mill ends of conductive oxide that arise during the production of such a sputtering target.

IPC Classes  ?

  • C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof

62.

METHOD OF RECOVERING VALUABLE METAL FROM SCRAP CONTAINING CONDUCTIVE OXIDE

      
Document Number 02673833
Status In Force
Filing Date 2008-02-08
Open to Public Date 2008-08-21
Grant Date 2012-03-06
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Shindo, Yuichiro
  • Takemoto, Kouichi

Abstract

Proposed is a method of recovering valuable metal from scrap containing conductive oxide including the steps of using scrap containing conductive oxide and performing electrolysis while periodically inverting the polarity, and recovering the scrap as hydroxide. With the foregoing method of recovering valuable metal from scrap containing conductive oxide, oxide system scrap is conductive oxide and a substance that can be reduced to metal or suboxide with hydrogen. This method enables to efficiently recover valuable metal from sputtering target scrap containing conductive oxide or scrap such as mill ends of conductive oxide that arise during the production of such a sputtering target.

IPC Classes  ?

  • C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof

63.

METHOD FOR COLLECTION OF VALUABLE METAL FROM ITO SCRAP

      
Document Number 02667234
Status In Force
Filing Date 2007-06-27
Open to Public Date 2008-05-08
Grant Date 2012-08-21
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Shindo, Yuichiro
  • Takemoto, Kouichi

Abstract

Proposed is a method for collecting valuable metal from an ITO scrap by subjecting to ITO scrap to electrolysis and collecting the result as metallic indium. specifically, the present invention proposes a method for selectively collecting metallic indium including the steps of subjecting the ITO scrap to electrolysis in an electrolytic bath partitioned with a diaphragm or an ion-exchange membrane, subsequently extracting anolyte temporarily, eliminating tin contained in the anolyte by a neutralization method, a replacement method or other methods, placing a solution from which the tin was eliminated in a cathode side again and performing electrolysis thereto; or a method for collecting valuable metal from an ITO scrap including the steps of obtaining a solution of in or Sn in an ITO electrolytic bath, eliminating the Sn in the solution, and collecting in in the collecting bath. These methods enable the efficient collection of metallic indium from an ITO scrap of an indium-tin oxide (ITO) sputtering target or an ITO scrap such as ITO mill ends arisen during the manufacture of such ITO sputtering target.

IPC Classes  ?

  • C25C 1/14 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of tin
  • C25C 1/22 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of metals not provided for in groups

64.

METHOD FOR LEACHING GOLD

      
Document Number 02599174
Status In Force
Filing Date 2007-08-28
Open to Public Date 2008-02-28
Grant Date 2012-08-14
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Abe, Yoshifumi
  • Hosaka, Hiroshi

Abstract

In a method for leaching gold from copper sulfides, the sulfide ores are first subjected to leaching of copper, thereby producing a leaching residue having 7.9% or less of the copper content. This leaching residue is mixed with a leach liquor, which contains the chloride ion and ferric ion and has 1.9 or less of pH. Gold and copper can be effectively leached from the copper sulfide ores. Ordinarily used oxidizing reagents such as hydrogen peroxide or nitric acid are not used. The gold, copper and iron can, therefore, be leached in a single process and by using an identical leaching liquor. The rate of gold leaching reaction can be enhanced by the co-presence of either copper or bromide ion or both together with the chloride and iron ion.

IPC Classes  ?

  • C22B 11/00 - Obtaining noble metals
  • C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
  • C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
  • C22B 11/06 - Chloridising

65.

SPUTTERING TARGET FOR PRODUCING METALLIC GLASS MEMBRANE AND MANUFACTURING METHOD THEREOF

      
Document Number 02584566
Status In Force
Filing Date 2005-11-04
Open to Public Date 2006-05-18
Grant Date 2013-12-10
Owner
  • TOHOKU UNIVERSITY (Japan)
  • JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Nakamura, Atsushi
  • Yahagi, Masataka
  • Inoue, Akihisa
  • Kimura, Hisamichi
  • Yamaura, Shin-Ichi

Abstract

A sputtering target for producing a metallic glass membrane characterized in comprising a structure obtained by sintering atomized powder having a composition of a ternary compound system or greater with at least one or more metal elements selected from Pd, Zr, Fe, Co, Cu and Ni as its main component (component of greatest atomic %), and being an average grain size of 50µm or less. The prepared metallic glass membrane can be used as a substitute for conventional high-cost bulk metallic glass obtained by quenching of molten metal. This sputtering target for producing the metallic glass membrane is also free from problems such as defects in the metallic glass membrane and unevenness of composition, has a uniform structure, can be produced efficiently and at low cost, and does not generate many nodules or particles. Further provided is a method for manufacturing such a sputtering target for forming the metallic glass membrane.

IPC Classes  ?

  • C23C 14/34 - Sputtering
  • B22F 9/08 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
  • C22C 5/04 - Alloys based on a platinum group metal
  • C22C 9/00 - Alloys based on copper
  • C22C 16/00 - Alloys based on zirconium
  • C22C 19/03 - Alloys based on nickel or cobalt based on nickel
  • C22C 19/07 - Alloys based on nickel or cobalt based on cobalt
  • C22C 38/00 - Ferrous alloys, e.g. steel alloys

66.

HYDROGEN SEPARATION MEMBRANE, SPUTTERING TARGET FOR FORMING SAID HYDROGEN SEPARATION MEMBRANE, AND MANUFACTURING METHOD THEREOF

      
Document Number 02585187
Status In Force
Filing Date 2005-11-04
Open to Public Date 2006-05-18
Grant Date 2011-03-15
Owner
  • TOHOKU UNIVERSITY (Japan)
  • JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Nakamura, Atsushi
  • Yahagi, Masataka
  • Inoue, Akihisa
  • Kimura, Hisamichi
  • Yamaura, Shin-Ichi

Abstract

Provided is a hydrogen separation membrane characterized by comprising a structure obtained by sintering atomized powder having a composition of Ni x M y Zr100-x-y (wherein M is Nb and/or Ta, 25 ~ x ~ 40, 25 ~ y ~ 40) and an average grain size of 50µm or less. The prepared hydrogen separation membrane does not require the use of costly Pd metal, and can be used as a substitute for conventional high-cost bulk metallic glass obtained by quenching of molten metal. This hydrogen separation membrane is free from problems such as defects in the hydrogen separation membrane and unevenness of composition, has a uniform structure, and is capable of separating hydrogen at low cost. Further provided are a sputtering target for forming such as hydrogen separation membrane and its manufacturing method.

IPC Classes  ?

  • B01D 71/02 - Inorganic material
  • B01D 53/22 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by diffusion
  • C01G 53/00 - Compounds of nickel
  • C23C 14/34 - Sputtering

67.

VAPOR PHASE GROWTH APPARATUS

      
Document Number 02556066
Status In Force
Filing Date 2005-02-15
Open to Public Date 2005-09-01
Grant Date 2013-07-16
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Shimizu, Eiichi
  • Makino, Nobuhito
  • Kawabe, Manabu

Abstract

It is to provide a vapor phase growth apparatus which can perform vapor phase growth of a thin film having a good uniformity throughout a surface of a wafer. The vapor phase growth apparatus includes at least a sealable reactor, a wafer containing member (wafer holder) installed within the reactor and having a wafer mounting portion (pocket hole) on a surface thereof for holding a wafer, a gas supply member (gas inlet pipe) for supplying raw material gas towards the wafer, a heating member (heater) for heating the wafer, and a heat uniformizing member (susceptor) for holding the wafer containing member and uniformizing heat from the heating member, wherein raw material gas is supplied into the reactor in a high temperature environment while heating the wafer by using the heating member via the heat uniformizing member and the wafer containing member, to form a film grown on a surface of the wafer, and wherein a recess portion depressed in a dome shape is formed at a back side of the wafer containing member.

IPC Classes  ?

  • H01L 21/205 - Deposition of semiconductor materials on a substrate, e.g. epitaxial growth using reduction or decomposition of a gaseous compound yielding a solid condensate, i.e. chemical deposition

68.

VAPOR PHASE GROWTH METHOD

      
Document Number 02556824
Status In Force
Filing Date 2005-02-15
Open to Public Date 2005-08-25
Grant Date 2013-12-10
Owner JX NIPPON MINING & METALS CORPORATION (Japan)
Inventor
  • Nakamura, Masashi
  • Oota, Suguru
  • Hirano, Ryuichi

Abstract

It is to provide a vapor phase growth method in which an epitaxial layer consisting of a compound semiconductor such as InAlAs, can be grown, with superior reproducibility, on a semiconductor substrate such as Fe-doped InP. In vapor phase growth method for growing an epitaxial layer on a semiconductor substrate, a resistivity of the semiconductor substrate at a room temperature is previously measured, a set temperature of the substrate is controlled depending on the resistivity at the room temperature such that a surface temperature of the substrate is a desired temperature regardless of the resistivity of the semiconductor substrate, and the epitaxial layer is grown.

IPC Classes  ?

  • H01L 21/203 - Deposition of semiconductor materials on a substrate, e.g. epitaxial growth using physical deposition, e.g. vacuum deposition, sputtering
  • C23C 14/54 - Controlling or regulating the coating process
  • C30B 23/08 - Epitaxial-layer growth by condensing ionised vapours
  • C30B 29/40 - AIIIBV compounds