by leaching

Industry

CPC
C22B3/04

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Parent Industries

CCHEMISTRY METALLURGY C22Metallurgy C22BPRODUCTION AND REFINING OF METALS PRETREATMENT OF RAW MATERIALS C22B3/00Extraction of metal compounds from ores or concentrates by wet processes

Current Industry

C22B3/04by leaching

Industries

Patents Grantslast 30 patents

Information Patent Grant
Electrokinetic device and method for in-situ leaching of uranium
- Patent number 12,168,813
- Issue date Dec 17, 2024
- UNIVERSITY OF SOUTH CHINA
- Chunguang Li
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Battery recycling
- Patent number 12,136,713
- Issue date Nov 5, 2024
- FORM ENERGY, INC.
- Nicholas Reed Perkins
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Process for obtaining vanadium oxide from a gasifier slag field
- Patent number 11,945,728
- Issue date Apr 2, 2024
- Reliance Industries Limited
- Sateesh Daggupati
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Systems and methods for closed-loop recycling of a liquid component...
- Patent number 11,923,518
- Issue date Mar 5, 2024
- Clarios Advanced Germany Gmbh & Co. KG
- Eberhard Meissner
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Activation system and method for enhancing metal recovery during at...
- Patent number 11,898,221
- Issue date Feb 13, 2024
- FLSmidth A/S
- David J. Chaiko
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Lithium extraction process and apparatus
- Patent number 11,873,540
- Issue date Jan 16, 2024
- U.S. Borax Inc.
- Amit Patwardhan
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for recovering gold from ores
- Patent number 11,827,952
- Issue date Nov 28, 2023
- Bromine Compounds Ltd.
- Ronen Naim
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Method for recovering valuable elements from precombustion coal-bas...
- Patent number 11,821,054
- Issue date Nov 21, 2023
- University of Kentucky Research Foundation
- Rick Honaker
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Methods for purifying and recycling lead from spent lead-acid batte...
- Patent number 11,791,505
- Issue date Oct 17, 2023
- CPS Technology Holdings LLC
- Matthew A. Spence
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
System and methods for in situ recovery and processing of recovered...
- Patent number 11,697,914
- Issue date Jul 11, 2023
- Denison Mines Corp.
- Peter Longo
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Material and its method for rapid eluting in an ionic rare earth or...
- Patent number 11,656,207
- Issue date May 23, 2023
- Tsinghua University
- Guocai Zhu
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Systems and methods for monitoring metal recovery systems
- Patent number 11,639,539
- Issue date May 2, 2023
- Freeport Minerals Corporation
- John Warren Dean
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Systems and methods for improvement of metal recovery and stability...
- Patent number 11,613,793
- Issue date Mar 28, 2023
- Differential Engineering Inc.
- Thomas Joseph Seal
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for cleanly extracting metallic silver
- Patent number 11,566,333
- Issue date Jan 31, 2023
- Institute of Process Engineering, Chinese Academy of Sciences
- Hui Zhang
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Methods for treating lithium-containing materials
- Patent number 11,519,081
- Issue date Dec 6, 2022
- NEMASKA LITHIUM INC.
- Jean-François Magnan
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Molecularly imprinted polymer beads for extraction of metals and us...
- Patent number 11,458,453
- Issue date Oct 4, 2022
- 6th Wave Innovations Corp.
- Jonathan P. Gluckman
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method for pre-treatment of gold-bearing oxide ores
- Patent number 11,401,580
- Issue date Aug 2, 2022
- Barrick Gold Corporation
- Yeonuk Choi
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for decomposing medium-/low-grade scheelite
- Patent number 11,384,410
- Issue date Jul 12, 2022
- Jiangxi University of Science and Technology
- Linsheng Wan
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for multi-recycling, low-energy and high-purity extraction...
- Patent number 11,371,117
- Issue date Jun 28, 2022
- CENTRAL ENERGY SCIENCE TECHNOLOGY LTD.
- Yi-Yang Xu
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method and apparatus for liquid/solid separation such as dewatering...
- Patent number 11,344,823
- Issue date May 31, 2022
- Sepro Mineral Systems Corp.
- Steven Alexander McAlister
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Systems and methods for monitoring metal recovery systems
- Patent number 11,332,808
- Issue date May 17, 2022
- Freeport Minerals Corporation
- John Warren Dean
- E21 - EARTH DRILLING MINING
Information Patent Grant
Processes and systems for regenerating alkali process streams
- Patent number 11,312,636
- Issue date Apr 26, 2022
- GRAYMONT WESTERN US INC.
- Shiaw Tseng
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Sequestration of macronutrients from anaerobic wastewater treatment...
- Patent number 11,225,427
- Issue date Jan 18, 2022
- The Regents of the University of Colorado
- Mark T. Hernandez
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Methods and apparatus for counter-current leaching of finely divide...
- Patent number 11,207,613
- Issue date Dec 28, 2021
- Drake Water Technologies, Inc.
- Ronald N. Drake
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Beneficiation of values from ores with a heap leach process
- Patent number 11,203,044
- Issue date Dec 21, 2021
- ANGLO AMERICAN SERVICES (UK) LTD.
- Anthony Owen Filmer
- B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information Patent Grant
Ionic liquid solvents of perhalide type for metals and metal compounds
- Patent number 11,198,921
- Issue date Dec 14, 2021
- Petroliam Nasional Berhad (Petronas)
- Robin Don Rogers
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Selective separation of elements or commodities of interest in aque...
- Patent number 11,186,896
- Issue date Nov 30, 2021
- COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION
- Grant Brian Douglas
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information Patent Grant
Systems and processes for recovering scandium values from laterite...
- Patent number 11,142,809
- Issue date Oct 12, 2021
- Scandium International Mining Corp.
- Willem P. C. Duyvesteyn
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for separation of antimony and arsenic from a leach solution
- Patent number 11,124,857
- Issue date Sep 21, 2021
- GOLDCORP INC.
- Marcus Tomlinson
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Low acidity, low solids pressure oxidative leaching of sulphidic feeds
- Patent number 11,118,244
- Issue date Sep 14, 2021
- Sherritt International Corporation
- Jan Tjeerd Smit
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Geothermally Powered Hydrometallurgical Zinc Production
- Publication number 20250059623
- Publication date Feb 20, 2025
- EnhancedGEO Holdings, LLC
- Greg Lindberg
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
PROCESSING OF MINING FEEDSTOCKS USING KINETIC PULVERIZATION AND SEP...
- Publication number 20250027183
- Publication date Jan 23, 2025
- TORXX KINETIC PULVERIZER LIMITED
- Christopher Mueller
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR RECYCLING IRON ORE TAILING AND USE THEREOF
- Publication number 20250011900
- Publication date Jan 9, 2025
- BAOTOU RESEARCH INSTITUTE OF RARE EARTHS
- Chunlei GUO
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
PROCESS FOR CONCENTRATING LITHIUM AND POTASSIUM FROM CLAYS FROM SAL...
- Publication number 20240417825
- Publication date Dec 19, 2024
- HOT SPRING MINING, S.A. DE C.V.
- Roberto PÉREZ GARIBAY
- C01 - INORGANIC CHEMISTRY
Information Patent Application
CARBON DIOXIDE BASED MINING FOR CARBON NEGATIVE MINERAL RECOVERY
- Publication number 20240410032
- Publication date Dec 12, 2024
- Battelle Memorial Institute
- Herbert T. Schaef
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
COMPOSITIONS AND METHODS FOR LITHIUM REMOVAL
- Publication number 20240384369
- Publication date Nov 21, 2024
- University of South Florida
- Nurettin Sahiner
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
COAL AND RARE EARTH RECOVERY METHOD AND SYSTEM
- Publication number 20240384372
- Publication date Nov 21, 2024
- Jeffrey MOLESEVICH
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
NON-TOXIC AND ENVIRONMENTALLY FRIENDLY METHOD OF RECYCLING ACID MIN...
- Publication number 20240384367
- Publication date Nov 21, 2024
- Materia USA LLC
- YEHUDIS GOTTESFELD
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD OF LEACHING METAL-CONTAINING MATERIALS
- Publication number 20240352553
- Publication date Oct 24, 2024
- Arizona Board of Regents on behalf of The University of Arizona
- Jaeheon Lee
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
PROCESSES FOR RECOVERING METALS FROM BLACK MASS
- Publication number 20240344175
- Publication date Oct 17, 2024
- CVMR CORPORATION
- Nanthakumar Victor Emmanuel
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
AUTOMATED METHOD AND DEVICE FOR PRODUCTION OF LEAD 212 FOR USE IN T...
- Publication number 20240327948
- Publication date Oct 3, 2024
- RADIOMEDIX, INC.
- Ebrahim Delpassand
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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
SEQUENTIAL TREATMENT PROCESS FOR THE HEAP LEACHING OF PRIMARY AND S...
- Publication number 20240279770
- Publication date Aug 22, 2024
- CORPORACION NACIONAL DEL COBRE DE CHILE
- Felipe LAGNO SÁNCHEZ
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD AND ELECTROCHEMICAL SYSTEM FOR RECYCLING SPENT LITHIUM-ION B...
- Publication number 20240279831
- Publication date Aug 22, 2024
- East China University of Science and Technology
- Shuai Gu
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Application
METHOD OF METAL RECOVERY WITH COSOLVENT
- Publication number 20240254590
- Publication date Aug 1, 2024
- Jetti Resources, LLC
- Zihe Ren
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR EXTRACTING LITHIUM FROM CATHOD ACTIVE MATERIALS IN SPENT...
- Publication number 20240240284
- Publication date Jul 18, 2024
- CHANGWON NATIONAL UNIVERSITY INDUSTRY ACADEMY COOPERATION CORPS
- Haesung JUNG
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
SYSTEMS AND METHODS FOR CLOSED-LOOP RECYCLING OF A LIQUID COMPONENT...
- Publication number 20240194962
- Publication date Jun 13, 2024
- CLARIOS GERMANY GMBH & CO. KG
- Eberhard Meissner
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
LITHIUM RECOVERY FROM LITHIUM-ION BATTERIES
- Publication number 20240170749
- Publication date May 23, 2024
- Ascend Elements, Inc.
- Kee-Chan Kim
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
HYDROMETALLURGICAL METHOD FOR RECOVERING LITHIUM FROM LITHIUM-CONTA...
- Publication number 20240150865
- Publication date May 9, 2024
- KOREA INSTITUTE OF GEOSCIENCE & MINERAL RESOURCES
- SHUN MYUNG SHIN
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Lithium Extraction Process and Apparatus
- Publication number 20240132998
- Publication date Apr 25, 2024
- U.S. Borax Inc.
- Amit Patwardhan
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
ELECTROKINETIC DEVICE AND METHOD FOR IN-SITU LEACHING OF URANIUM
- Publication number 20240117467
- Publication date Apr 11, 2024
- University of South China
- Chunguang LI
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
AUTOCLAVE AND PRESSURE OXIDATION METHOD
- Publication number 20240110258
- Publication date Apr 4, 2024
- Metso Outotec Finland Oy
- Marko Latva-Kokko
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
A Lithium Extraction Process and Apparatus
- Publication number 20240102130
- Publication date Mar 28, 2024
- U.S. Borax Inc.
- Amit Patwardhan
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
RECOVERY OF METAL FROM LEACH PROCESSING
- Publication number 20240084416
- Publication date Mar 14, 2024
- EXTRAKT PROCESS SOLUTIONS, LLC
- Christian KUJAWA
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR RECYCLING HYDROPHOBIC DEEP EUTECTIC SOLVENT AND NICKEL L...
- Publication number 20240076548
- Publication date Mar 7, 2024
- Prime Planet Energy & Solutions, Inc.
- Yuji YAMAMOTO
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHODS FOR TREATING LITHIUM-CONTAINING MATERIALS
- Publication number 20240068113
- Publication date Feb 29, 2024
- NEMASKA LITHIUM INC.
- Jean-François MAGNAN
- C01 - INORGANIC CHEMISTRY
Information Patent Application
SYSTEMS AND METHODS FOR SUBSURFACE METAL RECOVERY
- Publication number 20240026492
- Publication date Jan 25, 2024
- Freeport Minerals Corporation
- Casey J. Clayton
- G08 - SIGNALLING
Information Patent Application
SYSTEMS AND METHODS FOR IMPROVED RAFFINATE INJECTION
- Publication number 20240026493
- Publication date Jan 25, 2024
- Freeport Minerals Corporation
- Sarah Lyons
- G08 - SIGNALLING
Information Patent Application
METHODS FOR PURIFYING AND RECYCLING LEAD FROM SPENT LEAD-ACID BATTE...
- Publication number 20240021905
- Publication date Jan 18, 2024
- CPS Technology Holdings LLC
- Matthew A. Spence
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
PROCESS FOR GOLD AND/OR PLATINUM GROUP METALS HEAP LEACHING WITH LIME
- Publication number 20240002977
- Publication date Jan 4, 2024
- S.A. Lhoist Recherche et Developpement
- Chris Du Plessis
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

by leaching

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Electrokinetic device and method for in-situ leaching of uranium

Battery recycling

Process for obtaining vanadium oxide from a gasifier slag field

Systems and methods for closed-loop recycling of a liquid component...

Activation system and method for enhancing metal recovery during at...

Lithium extraction process and apparatus

Process for recovering gold from ores

Method for recovering valuable elements from precombustion coal-bas...

Methods for purifying and recycling lead from spent lead-acid batte...

System and methods for in situ recovery and processing of recovered...

Material and its method for rapid eluting in an ionic rare earth or...

Systems and methods for monitoring metal recovery systems

Systems and methods for improvement of metal recovery and stability...

Method for cleanly extracting metallic silver

Methods for treating lithium-containing materials

Molecularly imprinted polymer beads for extraction of metals and us...

Method for pre-treatment of gold-bearing oxide ores

Method for decomposing medium-/low-grade scheelite

Process for multi-recycling, low-energy and high-purity extraction...

Method and apparatus for liquid/solid separation such as dewatering...

Systems and methods for monitoring metal recovery systems

Processes and systems for regenerating alkali process streams

Sequestration of macronutrients from anaerobic wastewater treatment...

Methods and apparatus for counter-current leaching of finely divide...

Beneficiation of values from ores with a heap leach process

Ionic liquid solvents of perhalide type for metals and metal compounds

Selective separation of elements or commodities of interest in aque...

Systems and processes for recovering scandium values from laterite...

Process for separation of antimony and arsenic from a leach solution

Low acidity, low solids pressure oxidative leaching of sulphidic feeds

Patents Applicationslast 30 patents

Geothermally Powered Hydrometallurgical Zinc Production

PROCESSING OF MINING FEEDSTOCKS USING KINETIC PULVERIZATION AND SEP...

METHOD FOR RECYCLING IRON ORE TAILING AND USE THEREOF

PROCESS FOR CONCENTRATING LITHIUM AND POTASSIUM FROM CLAYS FROM SAL...

CARBON DIOXIDE BASED MINING FOR CARBON NEGATIVE MINERAL RECOVERY

COMPOSITIONS AND METHODS FOR LITHIUM REMOVAL

COAL AND RARE EARTH RECOVERY METHOD AND SYSTEM

NON-TOXIC AND ENVIRONMENTALLY FRIENDLY METHOD OF RECYCLING ACID MIN...

METHOD OF LEACHING METAL-CONTAINING MATERIALS

PROCESSES FOR RECOVERING METALS FROM BLACK MASS

AUTOMATED METHOD AND DEVICE FOR PRODUCTION OF LEAD 212 FOR USE IN T...

ARRANGEMENT AND METHOD FOR AIR-INDUCED EVAPORATION AND COOLING

SEQUENTIAL TREATMENT PROCESS FOR THE HEAP LEACHING OF PRIMARY AND S...

METHOD AND ELECTROCHEMICAL SYSTEM FOR RECYCLING SPENT LITHIUM-ION B...

METHOD OF METAL RECOVERY WITH COSOLVENT

METHOD FOR EXTRACTING LITHIUM FROM CATHOD ACTIVE MATERIALS IN SPENT...

SYSTEMS AND METHODS FOR CLOSED-LOOP RECYCLING OF A LIQUID COMPONENT...

LITHIUM RECOVERY FROM LITHIUM-ION BATTERIES

HYDROMETALLURGICAL METHOD FOR RECOVERING LITHIUM FROM LITHIUM-CONTA...

Lithium Extraction Process and Apparatus

ELECTROKINETIC DEVICE AND METHOD FOR IN-SITU LEACHING OF URANIUM

AUTOCLAVE AND PRESSURE OXIDATION METHOD

A Lithium Extraction Process and Apparatus

RECOVERY OF METAL FROM LEACH PROCESSING

METHOD FOR RECYCLING HYDROPHOBIC DEEP EUTECTIC SOLVENT AND NICKEL L...

METHODS FOR TREATING LITHIUM-CONTAINING MATERIALS

SYSTEMS AND METHODS FOR SUBSURFACE METAL RECOVERY

SYSTEMS AND METHODS FOR IMPROVED RAFFINATE INJECTION

METHODS FOR PURIFYING AND RECYCLING LEAD FROM SPENT LEAD-ACID BATTE...

PROCESS FOR GOLD AND/OR PLATINUM GROUP METALS HEAP LEACHING WITH LIME