CA2664756A1 - Method for thiosulfate leaching of precious metal-containing materials - Google Patents

Method for thiosulfate leaching of precious metal-containing materials Download PDF

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Publication number
CA2664756A1
CA2664756A1 CA002664756A CA2664756A CA2664756A1 CA 2664756 A1 CA2664756 A1 CA 2664756A1 CA 002664756 A CA002664756 A CA 002664756A CA 2664756 A CA2664756 A CA 2664756A CA 2664756 A1 CA2664756 A1 CA 2664756A1
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CA
Canada
Prior art keywords
gold
thiosulfate
leach solution
contacting
lixiviant
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Granted
Application number
CA002664756A
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French (fr)
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CA2664756C (en
Inventor
Jinxing Ji
Paul George West-Sells
Ralph Peter Hackl
Christopher Andrew Fleming
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Individual
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Publication of CA2664756C publication Critical patent/CA2664756C/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B11/00—Obtaining noble metals
    • C22B11/04—Obtaining noble metals by wet processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
    • C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
    • C22B3/24—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition by adsorption on solid substances, e.g. by extraction with solid resins
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/42—Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

Processes are provided for recovering precious metals from refractory materials using thiosulfate lixiviants. The processes can employ lixiviants that include at most only small amounts of copper and/or ammonia and operate at a relatively low pH, reduction of polythionates, inert atmospheres to control polythionate production, and electrolytic solutions which provide relatively high rates of precious metal recovery.

Claims (13)

1. A process for recovering gold from a gold-containing material, comprising:
(a) contacting the gold-containing material with a lixiviant to dissolve at least most of the gold and form a pregnant leach solution containing the dissolved gold and polythionates;
(b) contacting the pregnant leach solution with an extraction agent at a temperature of less than about 70°C to collect the gold on the extraction agent convert at least most of the polythionates in the pregnant thiosulfate leach solution into thiosulfate, and form a barren leach solution;
(c) thereafter removing the gold from the extraction agent; and (d) thereafter electrowinning the dissolved gold.
2. The process of Claim 1, wherein the contacting step (a) includes:
(i) contacting the gold-containing material with a first lixiviant at a first pressure to solubilize a first portion of the gold in the gold-containing material; and (ii) contacting the gold-containing material with a second lixiviant at a second pressure greater than the first pressure to solubilize a second portion of the gold in the gold-containing material.
3. The process of Claim 2, wherein the first and second lixiviants each include thiosulfate.
4. The process of Claim 1, wherein the lixiviant comprises thiosulfate and wherein in the contacting step (a) is at a superatmospheric molecular oxygen partial pressure and the thiosulfate lixiviant has a temperature of from about 40 to about 80°C, and the lixiviant includes at least about 0.005 M thiosulfate and less than 0.05 M of ammonia.
5. The process of Claim 1, wherein the lixiviant comprises thiosulfate and wherein in the contacting step (a) the thiosulfate lixiviant contains at least some copper and at least no more than about 20 ppm of added copper.
6. The process of Claim 1, wherein, in the recovering step (c) the precious metal is electrowon.
7. The process of Claim 1, wherein the pregnant thiosulfate leach solution comprises polythionates and further comprising after step (a) and before step (b):
(c) maintaining the pregnant thiosulfate leach solution at a temperature in the range of from about 60 to about 150°C in the substantial absence or complete absence of molecular oxygen to convert at least most of the polythionate to thiosulfate.
8. The process of Claim 1, further comprising after step (c):
(d) contacting the barren leach solution with a reductant to convert at least most of any polythionates in the barren leach solution into thiosulfate.
9. The process of Claim 1, wherein the pregnant leach solution during step (c) comprises at least about 0.01M sulfite.
10. The process of Claim 1, wherein the concentration of the sulfite during the electrowinning step (d) is in the range of from about 0.1 M to about 2 M.
11. The process of Claim 1, further comprising after step (c):
(d) contacting the barren leach solution with a reductant to convert at least most of any polythionates in the barren leach solution into thiosulfate.
12. The process of Claim 1, wherein contacting step (b) has a temperature that ranges from about 10 to about 50°C.
13. Gold recovered by the process of Claim 1.
CA2664756A 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials Expired - Fee Related CA2664756C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US20547200P 2000-05-19 2000-05-19
US60/205,472 2000-05-19
CA2617457A CA2617457C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA2617457A Division CA2617457C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials

Publications (2)

Publication Number Publication Date
CA2664756A1 true CA2664756A1 (en) 2001-11-22
CA2664756C CA2664756C (en) 2012-12-04

Family

ID=22762320

Family Applications (11)

Application Number Title Priority Date Filing Date
CA2864359A Expired - Fee Related CA2864359C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA2664756A Expired - Fee Related CA2664756C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA2745928A Abandoned CA2745928A1 (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA2698578A Expired - Lifetime CA2698578C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA2756715A Expired - Fee Related CA2756715C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA2617457A Expired - Fee Related CA2617457C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA002617415A Expired - Lifetime CA2617415C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA2745933A Expired - Lifetime CA2745933C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA2745806A Expired - Lifetime CA2745806C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA2620644A Expired - Lifetime CA2620644C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA002409378A Expired - Fee Related CA2409378C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2864359A Expired - Fee Related CA2864359C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials

Family Applications After (9)

Application Number Title Priority Date Filing Date
CA2745928A Abandoned CA2745928A1 (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA2698578A Expired - Lifetime CA2698578C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA2756715A Expired - Fee Related CA2756715C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA2617457A Expired - Fee Related CA2617457C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA002617415A Expired - Lifetime CA2617415C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA2745933A Expired - Lifetime CA2745933C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA2745806A Expired - Lifetime CA2745806C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA2620644A Expired - Lifetime CA2620644C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials
CA002409378A Expired - Fee Related CA2409378C (en) 2000-05-19 2001-05-18 Method for thiosulfate leaching of precious metal-containing materials

Country Status (12)

Country Link
US (7) US6660059B2 (en)
AP (3) AP1710A (en)
AR (1) AR029927A1 (en)
AU (4) AU2001274393B2 (en)
CA (11) CA2864359C (en)
CL (2) CL2014001615A1 (en)
GB (1) GB2379212B (en)
MX (4) MX347622B (en)
OA (1) OA12272A (en)
PE (1) PE20020002A1 (en)
WO (1) WO2001088212A2 (en)
ZA (1) ZA200209063B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014110518A1 (en) * 2013-01-14 2014-07-17 Simmons William D Flotation circuit for oxide and sulfide ores

Families Citing this family (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6660059B2 (en) 2000-05-19 2003-12-09 Placer Dome Technical Services Limited Method for thiosulfate leaching of precious metal-containing materials
US6451088B1 (en) * 2001-07-25 2002-09-17 Phelps Dodge Corporation Method for improving metals recovery using high temperature leaching
US20050126923A1 (en) * 2001-07-25 2005-06-16 Phelps Dodge Corporation Process for recovery of copper from copper-bearing material using medium temperature pressure leaching, direct electrowinning and solvent/solution extraction
US6451089B1 (en) * 2001-07-25 2002-09-17 Phelps Dodge Corporation Process for direct electrowinning of copper
CA2363762A1 (en) * 2001-11-23 2003-05-23 Golden Wave Resources Inc. Electromagnetic pyrolysis metallurgy
AUPS334402A0 (en) * 2002-07-02 2002-07-25 Commonwealth Scientific And Industrial Research Organisation Process for recovering precious metals
JP4144311B2 (en) * 2002-10-08 2008-09-03 住友金属鉱山株式会社 Methods for separating and recovering platinum group elements
US7722840B2 (en) * 2002-11-15 2010-05-25 Placer Dome Technical Services Limited Method for thiosulfate leaching of precious metal-containing materials
AU2007211912B2 (en) * 2002-11-15 2008-01-31 Placer Dome Technical Services Limited Method for thiosulfate leaching of precious metal-containing materials
EP1433860A1 (en) * 2002-12-23 2004-06-30 Paques B.V. Process for regenerating thiosulphate from a spent thiosulphate gold leachant
US7285256B2 (en) * 2003-04-04 2007-10-23 Newmont Usa Limited Precious metal recovery using thiocyanate lixiviant
US20040237721A1 (en) * 2003-05-29 2004-12-02 Morteza Baghalha Anoxic leaching of precious metals with thiosulfate and precious metal oxidants
MXPA03006955A (en) * 2003-08-04 2005-02-09 Univ Autonoma Metropolitana Silver and gold leaching and recovery process with electro-oxidised thiourea solutions.
AP2325A (en) 2004-10-29 2011-11-23 Freeport Mcmoran Corp Process for recovery of copper from copper-bearingmaterial using pressure leaching, direct electrow inning and solvent/solution extraction.
US7736487B2 (en) 2004-10-29 2010-06-15 Freeport-Mcmoran Corporation Process for recovery of copper from copper-bearing material using pressure leaching, direct electrowinning and solution extraction
US7604783B2 (en) 2004-12-22 2009-10-20 Placer Dome Technical Services Limited Reduction of lime consumption when treating refractor gold ores or concentrates
US7572317B2 (en) * 2005-11-10 2009-08-11 Barrick Gold Corporation Thiosulfate generation in situ in precious metal recovery
AP2578A (en) * 2005-11-10 2013-01-29 Barrick Gold Corp Thiosulfate generation in situ in precious metal recovery
CN101421426B (en) * 2006-03-03 2015-05-27 鑫亚国际有限公司 Process for extracting gold from gold-bearing ore
US8061888B2 (en) 2006-03-17 2011-11-22 Barrick Gold Corporation Autoclave with underflow dividers
WO2007115399A1 (en) * 2006-04-07 2007-10-18 Queen's University At Kingston Precious metal recovery from solution
CA2652825A1 (en) * 2006-05-25 2007-12-06 Matthew Ian Jeffrey Process for recovering metals from resins
US8252254B2 (en) 2006-06-15 2012-08-28 Barrick Gold Corporation Process for reduced alkali consumption in the recovery of silver
US20090056501A1 (en) * 2007-08-29 2009-03-05 Vale Inco Limited Hydrometallurgical process using resin-neutralized-solution of a heap leaching effluent
WO2009037596A2 (en) 2007-09-17 2009-03-26 Barrick Gold Corporation Method to improve recovery of gold from double refractory gold ores
US8262770B2 (en) 2007-09-18 2012-09-11 Barrick Gold Corporation Process for controlling acid in sulfide pressure oxidation processes
EA020884B1 (en) * 2007-09-18 2015-02-27 Баррик Гольд Корпорейшн Process for recovering gold from refractory sulfide ores
CA2705487A1 (en) * 2007-11-28 2009-06-04 Barrick Gold Corporation Microbial pre-treatment of double refractory gold ores
DE102007061806A1 (en) * 2007-12-19 2009-06-25 Mettler-Toledo Ag Process for the regeneration of amperometric sensors
PL2506979T3 (en) * 2009-12-04 2019-05-31 Barrick Gold Corp Separation of copper minerals from pyrite using air-metabisulfite treatment
FR2966470B1 (en) * 2010-10-25 2012-12-14 Christian Queyroix PROCESS AND TREATMENT SYSTEM FOR EXTRACTING GOLD CONTENT FROM GOLDEN ORE.
US8753513B2 (en) 2010-11-09 2014-06-17 International Business Machines Corporation Ammonia-peroxide wastewater treatment system
JP5146522B2 (en) 2010-11-26 2013-02-20 東京エレクトロン株式会社 Substrate processing apparatus, substrate processing method, and storage medium
PE20171794A1 (en) * 2010-12-07 2017-12-28 Barrick Gold Corp METHODS AND SYSTEM FOR LEACHING WITH THOSULFATE A MATERIAL CONTAINING GOLD AND / OR SILVER IN RESIN CIRCUITS THAT INCLUDE PARALLEL AND COUNTERCURRENT CURRENTS
JP5554285B2 (en) * 2011-03-30 2014-07-23 Ｊｘ日鉱日石金属株式会社 Gold leaching method
AR086933A1 (en) 2011-06-15 2014-01-29 Barrick Gold Corp METHOD FOR RECOVERING PRECIOUS METALS AND COPPER OF LIXIVIATE SOLUTIONS
AU2012297534B2 (en) * 2011-08-15 2016-09-29 Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Natural Resources Canada Process of leaching precious metals
CA2869158C (en) * 2012-04-09 2021-01-05 Process Research Ortech Inc. Chloride process for the leaching of gold
US10161016B2 (en) 2013-05-29 2018-12-25 Barrick Gold Corporation Method for pre-treatment of gold-bearing oxide ores
BR112016002948B1 (en) 2013-08-15 2020-12-01 Hatch Ltd method for controlling the retention time of an aqueous reaction mixture in a reactor and reactor with retention time control
EP2907899B1 (en) * 2014-05-30 2016-07-27 Nicolae Costache Method for recovering metal and nonmetal elements from objects comprising metal and organic compounds
CN104032138B (en) * 2014-06-05 2016-04-20 东北大学 The method of a kind of dump leaching-mercurous tailings of precipitation stabilization treatment
US10030906B2 (en) 2014-12-18 2018-07-24 Electrolux Home Products, Inc. Refrigerator
AU2016297956B2 (en) 2015-07-27 2021-01-21 6th Wave Innovations Corp. Molecularly Imprinted Polymer beads for extraction of metals and uses thereof
US9777346B2 (en) 2015-09-03 2017-10-03 Battelle Energy Alliance, Llc Methods for recovering metals from electronic waste, and related systems
GB2551980A (en) * 2016-06-30 2018-01-10 Commw Scient Ind Res Org Method and system for low level metal analysis of mineral samples
MX2019005280A (en) 2016-11-03 2019-09-09 6Th Wave Innovations Corp Molecularly imprinted polymer beads for extraction of lithium, mercury, and scandium.
DE102016015661A1 (en) 2016-12-31 2018-07-19 Thomas Helle Process for the purification of slag from heavy metals
CN108193049B (en) * 2017-11-29 2020-04-07 贵州省地质矿产中心实验室 Method for chemical pre-oxidation synchronous cyanide-free leaching of primary gold ore
CN109499625B (en) * 2018-11-06 2021-09-28 长春黄金研究院有限公司 High-efficiency elution method for gold-loaded resin
PE20211512A1 (en) 2019-01-21 2021-08-11 Barrick Gold Corp METHOD FOR CARBON-CATALYZED THOSULFATE LEACHING OF MATERIALS CONTAINING GOLD
CN109852816B (en) * 2019-02-27 2020-05-05 武汉理工大学 Method for adsorbing noble metal complex ions in thiosulfate leaching solution by sulfide ore
PE20220206A1 (en) * 2019-06-03 2022-02-01 Barrick Gold Corp METHOD FOR RECOVERING PRECIOUS METALS FROM THIOSULFATE LEACHING SOLUTIONS
EP4100554A4 (en) * 2020-02-07 2024-03-20 Univ Kentucky Res Found Extraction of copper, gold and other elements from waste materials
EP4136266A1 (en) * 2020-04-17 2023-02-22 Glencore Technology Pty Limited Sulphide oxidation in leaching of minerals
CN111647743B (en) * 2020-04-28 2021-11-09 西北矿冶研究院 Gold and silver mineral leaching combined medicament and preparation method thereof
US11236407B1 (en) * 2020-07-31 2022-02-01 Rio Tinto Technological Resources Inc. Metal recovery by leaching agglomerates of metal-containing material/pyrite
US11286540B2 (en) 2020-07-31 2022-03-29 Rio Tinto Technological Resources Inc. Method of processing a pyrite-containing slurry
US11319613B2 (en) 2020-08-18 2022-05-03 Enviro Metals, LLC Metal refinement
CN113546446A (en) * 2021-07-28 2021-10-26 江西东江环保技术有限公司 Method for recovering copper in BCC synthetic mother liquor by using cationic resin
CN115232964B (en) * 2022-08-15 2023-06-09 云南大学 Method for extracting gold from alkaline solution of gold thiosulfate complex based on natural eutectic solvent
CN115323381A (en) * 2022-09-18 2022-11-11 长春黄金研究院有限公司 Shiny silverweed herb agent and preparation method thereof

Family Cites Families (116)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US496951A (en) 1893-05-09 Henry parkes
US1627582A (en) 1922-09-07 1927-05-10 Thomas H Sherian Process for treatment of ores
US1627583A (en) * 1925-10-23 1927-05-10 George E Thum Cone carrier
GB954435A (en) * 1960-08-25 1964-04-08 Nat Res Dev Anion exchange resins for the recovery of gold and silver from gold and silver bearing aqueous cyanide liquors
US3524724A (en) * 1966-10-12 1970-08-18 Continental Oil Co Method for making ammonium thiosulfate and ammonium sulfate
US3644087A (en) * 1970-02-09 1972-02-22 Universal Oil Prod Co Process for scrubbing sulfur dioxide from a gas stream
GB1423342A (en) 1971-12-09 1976-02-04 Iws Nominee Co Ltd Polymeric compounds and process for their preparation
BE792337A (en) 1971-12-13 1973-03-30 Falconbridge Nickel Mines Ltd PROCESS FOR THE RECOVERY OF PRECIOUS METALS FROM MATERIALS CONTAINING COPPER
US3833351A (en) * 1973-02-15 1974-09-03 Univ Eng Inc Continuous preparation of pure metals by hydrogen reduction
GB1497534A (en) * 1973-12-13 1978-01-12 Matthey Rustenburg Refines Refining of metals
US3902896A (en) 1974-05-22 1975-09-02 Int Nickel Co Cementation of metals from acid solutions
CA1073681A (en) 1976-02-20 1980-03-18 Roman M. Genik-Sas-Berezowsky Recovery of precious metals from metal sulphides
CA1106617A (en) 1978-10-30 1981-08-11 Grigori S. Victorovich Autoclave oxidation leaching of sulfide materials containing copper, nickel and/or cobalt
US4296075A (en) 1978-11-24 1981-10-20 Mobil Oil Corporation Method for protecting an ion-exchange resin from chemical poisoning
CA1139569A (en) * 1979-04-13 1983-01-18 Harold J. Heinen Leaching gold - silver ores
US4289532A (en) 1979-12-03 1981-09-15 Freeport Minerals Company Process for the recovery of gold from carbonaceous ores
US4369061A (en) * 1979-12-28 1983-01-18 Kerley Jr Bernard J Recovery of precious metals from difficult ores
US4269622A (en) 1979-12-28 1981-05-26 Kerley Jr Bernard J Recovery of precious metals from difficult ores
US4411873A (en) * 1980-12-31 1983-10-25 Mobil Oil Corporation In-line regeneration of polythionate poisoned ion exchange resins
CA1198080A (en) 1981-04-15 1985-12-17 Freeport Minerals Company Simultaneous leaching and electrodeposition of precious metals
US4384889A (en) 1981-04-15 1983-05-24 Freeport Research & Development Company Simultaneous leaching and cementation of precious metals
US4411612A (en) * 1981-04-16 1983-10-25 Neha International Apparatus for recovering precious metals from their ores
RO81261A2 (en) 1981-12-01 1983-02-01 Institutul De Cercetari Si Proiectari Pentru Epurarea Apelor Reziduale,Ro PROCESS OF RECOVERY OF SILVER AND SUPPORT FROM WASTE OF PHOTOSENSIBLE MATERIALS
US4489984A (en) * 1982-04-22 1984-12-25 Mobil Oil Corporation In-situ uranium leaching process
DE3424460A1 (en) * 1983-07-08 1985-01-17 Guy Imre Zoltan Armidale Neusüdwales/New South Wales Kalocsai REAGENS FOR SOLVING METALLIC GOLD AND METHOD FOR EXTRACING GOLD
US4585561A (en) 1983-07-25 1986-04-29 Agfa-Gevaert Aktiengesellschaft Flotation process for the continuous recovery of silver or silver compounds from solutions or dispersions
DE3347165A1 (en) 1983-12-27 1985-07-04 Skw Trostberg Ag, 8223 Trostberg METHOD FOR EXTRACTION OF PRECIOUS METALS
US4552589A (en) 1984-01-27 1985-11-12 Getty Oil Company Process for the recovery of gold from refractory ores by pressure oxidation
ES530538A0 (en) 1984-03-13 1985-07-16 Nunez Alvarez Carlos PROCEDURE TO IMPROVE THE PERFORMANCE OF GOLD AND SILVER EXTRACTION IN THE GOSSAN MINERALS
JPS60208434A (en) 1984-04-03 1985-10-21 Nippon Mining Co Ltd Method for recovering silver from precipitate of copper electrolysis
CA1234991A (en) 1984-09-27 1988-04-12 Donald R. Weir Recovery of gold from auriferous refractory iron- containing sulphidic ore
CA1229487A (en) 1984-09-27 1987-11-24 Roman M. Genik-Sas-Berezowsky Process for the recovery of silver from a residue essentially free of elemental sulphur
CA1234290A (en) 1984-09-27 1988-03-22 Donald R. Weir Recovery of gold from refractory auriferous iron- containing sulphidic material
US4634187A (en) * 1984-11-21 1987-01-06 Isl Ventures, Inc. Method of in-situ leaching of ores
ZA853701B (en) 1984-11-26 1986-05-28 Pm Mineral Leaching Tech Inc Bioleaching process
JPS61127833A (en) 1984-11-27 1986-06-16 日本鉱業株式会社 Recovery of mercury in iron sulfide concentrate
JPS61127834A (en) 1984-11-27 1986-06-16 日本鉱業株式会社 Recovery of mercury in iron sulfide concentrate
SU1284942A1 (en) 1984-12-03 1987-01-23 Предприятие П/Я М-5400 Method of producing sodium thiosulfate
US4740243A (en) 1984-12-31 1988-04-26 Ensci, Inc. Metal value recovery from metal sulfide containing ores
SU1279954A1 (en) 1985-04-08 1986-12-30 Березниковский химический завод Method of producing sodium thiosulfate
US4816234A (en) 1985-05-10 1989-03-28 Kamyr, Inc. Utilization of oxygen in leaching and/or recovery procedures employing carbon
US4654078A (en) 1985-07-12 1987-03-31 Perez Ariel E Method for recovery of precious metals from difficult ores with copper-ammonium thiosulfate
ZW18286A1 (en) * 1985-09-10 1987-05-27 Butler Dean Leaching process
GB2180829B (en) 1985-09-20 1989-08-16 Aurotech N L Precious metal extraction
US4738718A (en) 1985-10-28 1988-04-19 Freeport Minerals Company Method for the recovery of gold using autoclaving
US5232490A (en) * 1985-11-27 1993-08-03 Leadville Silver And Gold Oxidation/reduction process for recovery of precious metals from MnO2 ores, sulfidic ores and carbonaceous materials
US4723998A (en) 1985-11-29 1988-02-09 Freeport Minerals Co Recovery of gold from carbonaceous ores by simultaneous chlorine leach and ion exchange resin adsorption process
US4721526A (en) * 1986-08-13 1988-01-26 Kamyr, Inc. Heap leaching with oxygen
US4765827A (en) 1987-01-20 1988-08-23 Ensci, Inc. Metal value recovery
US4801329A (en) 1987-03-12 1989-01-31 Ensci Incorporated Metal value recovery from carbonaceous ores
US4816235A (en) 1987-02-24 1989-03-28 Batric Pesic Silver and manganese recovery using acidified thiourea
US4778519A (en) * 1987-02-24 1988-10-18 Batric Pesic Recovery of precious metals from a thiourea leach
CA1306613C (en) 1987-05-15 1992-08-25 Guy Deschenes Recovery of gold from aqueous solutions
GB8726158D0 (en) 1987-11-07 1987-12-09 British Petroleum Co Plc Separation process
US5607619A (en) * 1988-03-07 1997-03-04 Great Lakes Chemical Corporation Inorganic perbromide compositions and methods of use thereof
US4923510A (en) 1988-10-31 1990-05-08 Gopalan Ramadorai Treatment of refractory carbonaceous sulfide ores for gold recovery
US4902345A (en) 1989-01-12 1990-02-20 Newmont Gold Co. Treatment of refractory carbonaceous and sulfidic ores or concentrates for precious metal recovery
MY105658A (en) 1989-03-07 1994-11-30 Butler Dean R Noble metal recovery
JP2632576B2 (en) 1989-05-12 1997-07-23 日鉱金属株式会社 Desorption method of gold iodine complex from ion exchange resin
GB9002311D0 (en) 1990-02-02 1990-04-04 Rio Tinto Minerals Dev Separation process
US5071477A (en) 1990-05-03 1991-12-10 American Barrick Resources Corporation of Toronto Process for recovery of gold from refractory ores
US5244493A (en) 1990-09-21 1993-09-14 Newmont Gold Co. Biometallurgical treatment of precious metal ores having refractory carbon content
US5127942A (en) 1990-09-21 1992-07-07 Newmont Mining Corporation Microbial consortium treatment of refractory precious metal ores
US5114687A (en) 1990-12-14 1992-05-19 South Dakota School Of Mines & Technology Ammonia extraction of gold and silver from ores and other materials
US6248301B1 (en) 1991-04-12 2001-06-19 Newmont Mining Corporation And Newmont Gold Company Process for treating ore having recoverable metal values including arsenic containing components
US5147618A (en) 1991-05-21 1992-09-15 Freeport-Mcmoran Inc. Process for recovery of gold from refractory gold ores using sulfurous acid as the leaching agent
US5147617A (en) 1991-05-21 1992-09-15 Freeport-Mcmoran Inc. Process for recovery of gold from gold ores using a complexing pretreatment and sulfurous acid leaching
US5246486A (en) 1991-07-10 1993-09-21 Newmont Gold Co. Biooxidation process for recovery of gold from heaps of low-grade sulfidic and carbonaceous sulfidic ore materials
US5332559A (en) 1991-07-10 1994-07-26 Newmont Gold Co. Biooxidation process for recovery of metal values from sulphur-containing ore materials
US5354359A (en) * 1992-04-01 1994-10-11 Newmont Gold Co. Hydrometallurgical process for the recovery of precious metal values from precious metal ores with thiosulfate lixiviant
US5236492A (en) 1992-07-29 1993-08-17 Fmc Gold Company Recovery of precious metal values from refractory ores
US5364453A (en) 1992-09-22 1994-11-15 Geobiotics, Inc. Method for recovering gold and other precious metals from carbonaceous ores
US5338338A (en) 1992-09-22 1994-08-16 Geobiotics, Inc. Method for recovering gold and other precious metals from carbonaceous ores
US5308381A (en) 1993-04-15 1994-05-03 South Dakota School Of Mines & Techology Ammonia extraction of gold and silver from ores and other materials
US5484470A (en) 1994-07-28 1996-01-16 E. I. Du Pont De Nemours And Company Enhancement of gold lixiviation using nitrogen and sulfur heterocyclic aromatic compounds
US5405430A (en) 1994-04-12 1995-04-11 Groves; William D. Recovery of precious metals from evaporite sediments
US5449397A (en) 1994-06-24 1995-09-12 Hunter; Robert M. Biocatalyzed leaching of precious metal values
US5489326A (en) 1994-10-04 1996-02-06 Barrick Gold Corporation Gold recovery using controlled oxygen distribution pressure oxidation
US5536480A (en) 1994-11-29 1996-07-16 Santa Fe Pacific Gold Corporation Method for treating mineral material having organic carbon to facilitate recovery of gold and silver
US5683490A (en) 1994-12-23 1997-11-04 The United States Of America As Represented By The Secretary Of The Interior Solution mining of precious metals using aqueous, sulfur-bearing solutions at elevated temperatures
US5536297A (en) 1995-02-10 1996-07-16 Barrick Gold Corporation Gold recovery from refractory carbonaceous ores by pressure oxidation and thiosulfate leaching
US5785736A (en) * 1995-02-10 1998-07-28 Barrick Gold Corporation Gold recovery from refractory carbonaceous ores by pressure oxidation, thiosulfate leaching and resin-in-pulp adsorption
US5653945A (en) * 1995-04-18 1997-08-05 Santa Fe Pacific Gold Corporation Method for processing gold-bearing sulfide ores involving preparation of a sulfide concentrate
US5837210A (en) * 1995-04-18 1998-11-17 Newmont Gold Company Method for processing gold-bearing sulfide ores involving preparation of a sulfide concentrate
GB2310424B (en) 1996-02-22 1999-09-29 Finch Limited Process for recovering gold from oxide-based refractory ores
WO1997049474A1 (en) 1996-06-26 1997-12-31 Henkel Corporation Process for the recovery of precious metal values from aqueous ammoniacal thiosulfate leach solutions
US6197214B1 (en) 1996-06-26 2001-03-06 Henkel Corporation Ammonium thiosulfate complex of gold or silver and an amine
CA2209559C (en) 1996-07-16 2001-12-18 Barrick Gold Corporation Gold recovery from refractory carbonaceous ores by pressure oxidation, thiosulfate leaching and resin-in-leach adsorption
US5733431A (en) 1996-08-21 1998-03-31 Hw Process Technologies, Inc. Method for removing copper ions from copper ore using organic extractions
CA2193305A1 (en) 1996-12-18 1998-06-18 Jean-Marc Lalancette Process for removing and recovering copper, silver and zinc from sulfide ores
WO1998056494A1 (en) 1997-06-09 1998-12-17 Hw Process Technologies, Inc. Method for separating and isolating precious metals from non precious metals dissolved in solutions
US5961833A (en) 1997-06-09 1999-10-05 Hw Process Technologies, Inc. Method for separating and isolating gold from copper in a gold processing system
AUPO900097A0 (en) 1997-09-05 1997-10-02 Arton (No 001) Pty Ltd Process
CA2307500C (en) 1997-10-30 2010-01-12 Hw Process Technologies, Inc. Method for removing contaminants from process streams in metal recovery processes
US6251163B1 (en) * 1998-03-04 2001-06-26 Placer Dome, Inc. Method for recovering gold from refractory carbonaceous ores
US6368381B1 (en) * 1998-03-11 2002-04-09 Placer Dome Technical Services, Ltd. Autoclave using agitator and sparge tube to provide high oxygen transfer rate to metal-containing solutions
US6183706B1 (en) * 1998-03-11 2001-02-06 Placer Dome, Inc. Autoclave having an agitator with an aerating impeller for high oxygen transfer rate to metal-containing slurries and method of use
PL204816B1 (en) 1998-05-08 2010-02-26 Shell Oil Co Process to recover molybdenum and vanadium metals from spent catalyst by alkaline leaching
CA2315480A1 (en) 1999-08-13 2001-02-13 Antonio T. Robles Process for removing metals from a sorbent
AUPQ315799A0 (en) 1999-09-29 1999-10-21 Murdoch University Improved process for the elution of gold from anion exchange resins
US20030154822A1 (en) * 1999-12-09 2003-08-21 John Hall Recovery of precious metals
AUPQ456299A0 (en) 1999-12-09 2000-01-13 Geo2 Limited Recovery of precious metals
US6451275B1 (en) * 2000-03-10 2002-09-17 Lakefield Research Limited Methods for reducing cyanide consumption in precious metal recovery by reducing the content of intermediate sulfur oxidation products therein
US6344068B1 (en) * 2000-04-04 2002-02-05 Barrick Gold Corporation Process for recovering gold from thiosulfate leach solutions and slurries with ion exchange resin
US6660059B2 (en) 2000-05-19 2003-12-09 Placer Dome Technical Services Limited Method for thiosulfate leaching of precious metal-containing materials
AU9330601A (en) 2000-09-29 2002-04-08 Newmont Mining Corp Method and apparatus for chemical processing
US6500231B1 (en) 2001-03-29 2002-12-31 Newmont Usa Limited Recovery of precious metals from thiosulfate solutions
AU783904B2 (en) 2001-04-10 2005-12-22 Grd Minproc Limited Improved processing of precious metal-containing materials
US6632264B2 (en) 2001-04-17 2003-10-14 The University Of British Columbia Gold recovery from thiosulfate leaching
US6641642B2 (en) 2001-12-21 2003-11-04 Newmont Usa Limited High temperature pressure oxidation of ores and ore concentrates containing silver using controlled precipitation of sulfate species
WO2003080879A1 (en) 2002-03-26 2003-10-02 Council Of Scientific And Industrial Research Process for the recovery of gold and silver from used refractory bricks
US6602319B1 (en) 2002-04-01 2003-08-05 Council Of Scientific And Industrial Research Process for the recovery of gold and silver from used refractory bricks
AUPS334402A0 (en) 2002-07-02 2002-07-25 Commonwealth Scientific And Industrial Research Organisation Process for recovering precious metals
US7722840B2 (en) 2002-11-15 2010-05-25 Placer Dome Technical Services Limited Method for thiosulfate leaching of precious metal-containing materials
EP1433860A1 (en) 2002-12-23 2004-06-30 Paques B.V. Process for regenerating thiosulphate from a spent thiosulphate gold leachant
AU2003904385A0 (en) 2003-08-18 2003-08-28 Murdoch University Improved Thiosulphate Leach Process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014110518A1 (en) * 2013-01-14 2014-07-17 Simmons William D Flotation circuit for oxide and sulfide ores
US8931642B2 (en) 2013-01-14 2015-01-13 William D. Simmons Activated flotation circuit for processing combined oxide and sulfide ores

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