by physical methods

Industry

CPC
C22B15/0086

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Parent Industries

CCHEMISTRY METALLURGY C22Metallurgy C22BPRODUCTION AND REFINING OF METALS PRETREATMENT OF RAW MATERIALS C22B15/00Obtaining copper

Current Industry

C22B15/0086by physical methods

Industries

Patents Grantslast 30 patents

Information Patent Grant
Methods and systems for leaching a metal-bearing material
- Patent number 12,018,349
- Issue date Jun 25, 2024
- Freeport Minerals Corporation
- Sarah Lyons
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Lithium ion battery scrap treatment method
- Patent number 11,961,980
- Issue date Apr 16, 2024
- JX Metals Corporation
- Junichi Arakawa
- B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information Patent Grant
Method for recovering Cu and method of preparing electrolytic copper
- Patent number 11,946,116
- Issue date Apr 2, 2024
- JX Metals Corporation
- Yuken Fukano
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Metal recovery method using adsorbent
- Patent number 11,473,169
- Issue date Oct 18, 2022
- DANAM-ENE CO. LTD.
- Young Min Oh
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
System for use in producing a metal ion suspension and process of u...
- Patent number 11,459,638
- Issue date Oct 4, 2022
- CDA RESEARCH GROUP, INC.
- Dominic C. Abbott
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
System for use in producing a metal ion suspension and process of u...
- Patent number 11,193,184
- Issue date Dec 7, 2021
- CDA RESEARCH GROUP, INC.
- Dominic C. Abbott
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Flotation reagents and flotation processes utilizing same
- Patent number 11,007,538
- Issue date May 18, 2021
- Cytec Technology Corp.
- Devarayasamudram Ramachandran Nagaraj
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Coalescing elements in copper production
- Patent number 10,988,827
- Issue date Apr 27, 2021
- 3M Innovative Properties Company
- Clinton P. Waller
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
System and method for recovering desired materials and producing cl...
- Patent number 10,894,258
- Issue date Jan 19, 2021
- Thomas Valerio
- B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information Patent Grant
Method of recovering base metals from low grade ores and residues
- Patent number 10,724,117
- Issue date Jul 28, 2020
- SIRCH GROUP (PTY) LTD.
- Nicholas Conradie
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Recovery of copper from arsenic-containing process feed
- Patent number 10,544,482
- Issue date Jan 28, 2020
- Sherritt International Corporation
- Kelvin Richard Buban
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Process for the improvement of copper leaching processes using calc...
- Patent number 10,400,308
- Issue date Sep 3, 2019
- Antofagasta Minerals S.A.
- Abraham Backit Gutiérrez
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Systems and methods for copper recovery via roasting and leaching
- Patent number 10,246,789
- Issue date Apr 2, 2019
- Freeport Minerals Corporation
- Joanna M Robertson
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Flotation reagents and flotation processes utilizing same
- Patent number 10,130,956
- Issue date Nov 20, 2018
- Cytec Technology Corp.
- Devarayasamudram Ramachandran Nagaraj
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of recovering copper and precious metals
- Patent number 10,023,936
- Issue date Jul 17, 2018
- Outotec (Finland) Oy
- Kari Valkama
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Solvent extraction and stripping system
- Patent number 9,994,962
- Issue date Jun 12, 2018
- MINEXTECH, LLC
- William Daniel Ernt
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Hydrometallurgical method for the removal of radionuclides from rad...
- Patent number 9,587,290
- Issue date Mar 7, 2017
- Orway Mineral Consultants (WA) Pty, Ltd.
- Grenvil Marquis Dunn
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Mercaptanized dicyclopentadiene compositions and use thereof as a m...
- Patent number 9,539,587
- Issue date Jan 10, 2017
- Chevron Phillips Chemical Company LP
- Jim D. Byers
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Leaching process for copper concentrates with a carbon catalyst
- Patent number 8,968,442
- Issue date Mar 3, 2015
- The University of British Columbia
- David G. Dixon
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Methods and systems for recovering rhenium from a copper leach
- Patent number 8,491,700
- Issue date Jul 23, 2013
- Freeport-McMoran Corporation
- Brett T. Waterman
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Processing copper sulfide ores
- Patent number 8,388,726
- Issue date Mar 5, 2013
- Iffat Tahira Siddique
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Methods and systems for recovering rhenium from a copper leach
- Patent number 8,361,192
- Issue date Jan 29, 2013
- Freeport-McMoran Corporation
- Brett T. Waterman
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Ultrahigh-purity copper and process for producing the same
- Patent number 8,216,442
- Issue date Jul 10, 2012
- JX Nippon Mining & Metals Corporation
- Yuichiro Shindo
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Ultrahigh-purity copper and process for producing the same
- Patent number 8,192,596
- Issue date Jun 5, 2012
- JX Nippon Mining & Metals Corporation
- Yuichiro Shindo
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for the recovery of gold from sulphide concentrate
- Patent number 7,785,395
- Issue date Aug 31, 2010
- Outotec Oyj
- Jaakko Leppinen
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Metal recovery from a tank bioleaching solution with the use of coa...
- Patent number 7,578,868
- Issue date Aug 25, 2009
- BHP Billiton SA Limited
- Chris Andre du Plessis
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for improving metals recovery using high temperature pressur...
- Patent number 7,517,384
- Issue date Apr 14, 2009
- Phelps Dodge Corporation
- John O. Marsden
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for concentrating precious metals contained in leaching resi...
- Patent number 7,422,621
- Issue date Sep 9, 2008
- Sumitomo Metal Mining Co., Ltd.
- Koji Ando
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Acid stable membranes for nanofiltration
- Patent number 7,138,058
- Issue date Nov 21, 2006
- GE Osmonics, Inc.
- Christopher J. Kurth
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for improving metals recovery using high temperature pressur...
- Patent number 7,125,436
- Issue date Oct 24, 2006
- Phelps Dodge Corporation
- John O. Marsden
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

Information Patent Application
A BIO-BASED PROCESS FOR EXTRACTING METALS FROM BATTERIES
- Publication number 20240318277
- Publication date Sep 26, 2024
- BRAIN BIOTECH AG
- Gina DUNLEVY
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHODS AND SYSTEMS FOR LEACHING A METAL-BEARING MATERIAL
- Publication number 20240301529
- Publication date Sep 12, 2024
- Freeport Minerals Corporation
- Sarah Lyons
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
ARRANGEMENT AND METHOD FOR AIR-INDUCED EVAPORATION AND COOLING
- Publication number 20240287641
- Publication date Aug 29, 2024
- METSO FINLAND OY
- Marika TIIHONEN
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
RECOVERY OF METALS FROM LITHIUM-ION BATTERIES
- Publication number 20240006677
- Publication date Jan 4, 2024
- REDIVIVUS, INC.
- Alejandro F. GRAF
- B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information Patent Application
METHODS AND SYSTEMS FOR LEACHING A METAL-BEARING MATERIAL
- Publication number 20230090475
- Publication date Mar 23, 2023
- Freeport Minerals Corporation
- Sarah Lyons
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR PROCESSING ORE OR REFINING INTERMEDIATE
- Publication number 20220298600
- Publication date Sep 22, 2022
- JX NIPPON MINING & METALS CORPORATION
- Yuken FUKANO
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
SYSTEM FOR USE IN PRODUCING A METAL ION SUSPENSION AND PROCESS OF U...
- Publication number 20210363607
- Publication date Nov 25, 2021
- CDA RESEARCH GROUP, INC.
- Dominic C. ABBOTT
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METAL RECOVERY METHOD USING ADSORBENT
- Publication number 20210130925
- Publication date May 6, 2021
- DANAM-ENE CO.LTD.
- Young Min OH
- B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
Information Patent Application
METHOD FOR RECOVERING Cu AND METHOD OF PREPARING ELECTROLYTIC COPPER
- Publication number 20210032722
- Publication date Feb 4, 2021
- JX NIPPON MINING & METALS CORPORATION
- Yuken FUKANO
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
SYSTEM FOR USE IN PRODUCING A METAL ION SUSPENSION AND PROCESS OF U...
- Publication number 20200270723
- Publication date Aug 27, 2020
- CDA RESEARCH GROUP, INC.
- Dominic C. ABBOTT
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
SYSTEMS AND METHODS FOR METAL RECOVERY
- Publication number 20190177864
- Publication date Jun 13, 2019
- Freeport Minerals Corporation
- Joanna M. Robertson
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
SINGLE STAGE PRESSURE LEACH HYDROMETALLURGICAL METHOD FOR UPGRADE O...
- Publication number 20190017146
- Publication date Jan 17, 2019
- Orway Mineral Consultants (WA) Pty Ltd
- Grenvil Marquis DUNN
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
SOLVENT EXTRACTION AND STRIPPING SYSTEM
- Publication number 20180282887
- Publication date Oct 4, 2018
- MINEXTECH LLC
- William Daniel ERNT
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
SYSTEM AND METHOD FOR RECOVERING DESIRED MATERIALS AND PRODUCING CL...
- Publication number 20180214890
- Publication date Aug 2, 2018
- Thomas Valerio
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
COALESCING ELEMENTS IN COPPER PRODUCTION
- Publication number 20180112291
- Publication date Apr 26, 2018
- 3M Innovative Properties Company
- Clinton P. WALLER
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Process For the Improvement of Copper Leaching Processes Using Calc...
- Publication number 20170335428
- Publication date Nov 23, 2017
- Antofagasta Minerals S.A.
- Abraham Backit Gutiérrez
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
SOLVENT EXTRACTION AND STRIPPING SYSTEM
- Publication number 20170241028
- Publication date Aug 24, 2017
- MINEXTECH LLC
- William Daniel Ernt
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
Apparatus and Process for the Improved Economic Extraction of Metal...
- Publication number 20170175226
- Publication date Jun 22, 2017
- SMP HOLDINGS LIMITED
- Arnoldus Carel SWARTS
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
A METHOD OF RECOVERING BASE METALS FROM LOW GRADE ORES AND RESIDUES
- Publication number 20170152583
- Publication date Jun 1, 2017
- SIRCH GROUP (PTY) LTD.
- Nicholas CONRADIE
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Recovery of Copper from Arsenic-Containing Process Feed
- Publication number 20170009318
- Publication date Jan 12, 2017
- SHERRITT INTERNATIONAL CORPORATION
- Kelvin Richard BUBAN
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
FLOTATION REAGENTS AND FLOTATION PROCESSES UTILIZING SAME
- Publication number 20160271624
- Publication date Sep 22, 2016
- Cytec Technology Corp.
- Devarayasamudram Ramachandran NAGARAJ
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Application
SYSTEMS AND METHODS FOR METAL RECOVERY
- Publication number 20160230296
- Publication date Aug 11, 2016
- Freeport Minerals Corporation
- Joanna M. Robertson
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
METHOD OF RECOVERING COPPER AND PRECIOUS METALS
- Publication number 20160115568
- Publication date Apr 28, 2016
- OUTOTEC (FINLAND) OY
- Kari VALKAMA
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
HYDROMETALLURGICAL METHOD FOR THE REMOVAL OF RADIONUCLIDES FROM RAD...
- Publication number 20150329938
- Publication date Nov 19, 2015
- ORWAY MINERAL CONSULTANTS (WA) PTY LTD.
- Grenvil Marquis DUNN
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHODS AND SYSTEMS FOR RECOVERING RHENIUM FROM A COPPER LEACH
- Publication number 20130276586
- Publication date Oct 24, 2013
- Brett T. Waterman
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
SYSTEMS AND METHODS FOR METAL RECOVERY
- Publication number 20130153436
- Publication date Jun 20, 2013
- FREEPORT-MCMORAN CORPORATION
- Joanna M. Robertson
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
SYSTEMS AND METHODS FOR METAL RECOVERY
- Publication number 20130156661
- Publication date Jun 20, 2013
- FREEPORT-MCMORAN CORPORATION
- Joanna M. Robertson
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
METHODS AND SYSTEMS FOR RECOVERING RHENIUM FROM A COPPER LEACH
- Publication number 20130118310
- Publication date May 16, 2013
- FREEPORT-MCMORAN CORPORATION
- Brett T. Waterman
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
METHODS AND SYSTEMS FOR RECOVERING RHENIUM FROM A COPPER LEACH
- Publication number 20120304827
- Publication date Dec 6, 2012
- FREEPORT-MCMORAN CORPORATION
- Brett T. Waterman
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
LEACHING PROCESS FOR COPPER CONCENTRATES WITH A CARBON CATALYST
- Publication number 20120279357
- Publication date Nov 8, 2012
- The University of British Columbia
- David G. Dixon
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

by physical methods

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Methods and systems for leaching a metal-bearing material

Lithium ion battery scrap treatment method

Method for recovering Cu and method of preparing electrolytic copper

Metal recovery method using adsorbent

System for use in producing a metal ion suspension and process of u...

System for use in producing a metal ion suspension and process of u...

Flotation reagents and flotation processes utilizing same

Coalescing elements in copper production

System and method for recovering desired materials and producing cl...

Method of recovering base metals from low grade ores and residues

Recovery of copper from arsenic-containing process feed

Process for the improvement of copper leaching processes using calc...

Systems and methods for copper recovery via roasting and leaching

Flotation reagents and flotation processes utilizing same

Method of recovering copper and precious metals

Solvent extraction and stripping system

Hydrometallurgical method for the removal of radionuclides from rad...

Mercaptanized dicyclopentadiene compositions and use thereof as a m...

Leaching process for copper concentrates with a carbon catalyst

Methods and systems for recovering rhenium from a copper leach

Processing copper sulfide ores

Methods and systems for recovering rhenium from a copper leach

Ultrahigh-purity copper and process for producing the same

Ultrahigh-purity copper and process for producing the same

Method for the recovery of gold from sulphide concentrate

Metal recovery from a tank bioleaching solution with the use of coa...

Method for improving metals recovery using high temperature pressur...

Method for concentrating precious metals contained in leaching resi...

Acid stable membranes for nanofiltration

Method for improving metals recovery using high temperature pressur...

Patents Applicationslast 30 patents

A BIO-BASED PROCESS FOR EXTRACTING METALS FROM BATTERIES

METHODS AND SYSTEMS FOR LEACHING A METAL-BEARING MATERIAL

ARRANGEMENT AND METHOD FOR AIR-INDUCED EVAPORATION AND COOLING

RECOVERY OF METALS FROM LITHIUM-ION BATTERIES

METHODS AND SYSTEMS FOR LEACHING A METAL-BEARING MATERIAL

METHOD FOR PROCESSING ORE OR REFINING INTERMEDIATE

SYSTEM FOR USE IN PRODUCING A METAL ION SUSPENSION AND PROCESS OF U...

METAL RECOVERY METHOD USING ADSORBENT

METHOD FOR RECOVERING Cu AND METHOD OF PREPARING ELECTROLYTIC COPPER

SYSTEM FOR USE IN PRODUCING A METAL ION SUSPENSION AND PROCESS OF U...

SYSTEMS AND METHODS FOR METAL RECOVERY

SINGLE STAGE PRESSURE LEACH HYDROMETALLURGICAL METHOD FOR UPGRADE O...

SOLVENT EXTRACTION AND STRIPPING SYSTEM

SYSTEM AND METHOD FOR RECOVERING DESIRED MATERIALS AND PRODUCING CL...

COALESCING ELEMENTS IN COPPER PRODUCTION

Process For the Improvement of Copper Leaching Processes Using Calc...

SOLVENT EXTRACTION AND STRIPPING SYSTEM

Apparatus and Process for the Improved Economic Extraction of Metal...

A METHOD OF RECOVERING BASE METALS FROM LOW GRADE ORES AND RESIDUES

Recovery of Copper from Arsenic-Containing Process Feed

FLOTATION REAGENTS AND FLOTATION PROCESSES UTILIZING SAME

SYSTEMS AND METHODS FOR METAL RECOVERY

METHOD OF RECOVERING COPPER AND PRECIOUS METALS

HYDROMETALLURGICAL METHOD FOR THE REMOVAL OF RADIONUCLIDES FROM RAD...

METHODS AND SYSTEMS FOR RECOVERING RHENIUM FROM A COPPER LEACH

SYSTEMS AND METHODS FOR METAL RECOVERY

SYSTEMS AND METHODS FOR METAL RECOVERY

METHODS AND SYSTEMS FOR RECOVERING RHENIUM FROM A COPPER LEACH

METHODS AND SYSTEMS FOR RECOVERING RHENIUM FROM A COPPER LEACH

LEACHING PROCESS FOR COPPER CONCENTRATES WITH A CARBON CATALYST