IN2014MN01917A - - Google Patents

Info

Publication number
IN2014MN01917A
IN2014MN01917A IN1917MUN2014A IN2014MN01917A IN 2014MN01917 A IN2014MN01917 A IN 2014MN01917A IN 1917MUN2014 A IN1917MUN2014 A IN 1917MUN2014A IN 2014MN01917 A IN2014MN01917 A IN 2014MN01917A
Authority
IN
India
Prior art keywords
gold
extraction
concentrate
organic solvent
extract
Prior art date
Application number
Inventor
Vaikuntam I Lakshmanan
Ramamritham Sridhar
M A Halim
Original Assignee
Process Res Ortech Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Process Res Ortech Inc filed Critical Process Res Ortech Inc
Publication of IN2014MN01917A publication Critical patent/IN2014MN01917A/en

Links

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
    • C22B3/10—Hydrochloric acid, other halogenated acids or salts thereof
    • 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

Landscapes

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

Abstract

A process for the extraction of gold from a gold bearing ore or concentrate comprising the steps of leaching the gold bearing ore or concentrate with a lixiviant of hydrochloric acid and magnesium chloride at atmospheric pressure at a temperature of at least 90°C and an Eh of at least 900 mV. After a liquid/solids separation step the solution obtained is subjected to an organic solvent extraction step using an oxime to obtain a solution of organic solvent containing gold which is stripped with sodium thiosulphate to recover gold. The extraction may be operated to extract gold with or without iron. Materials used in the process may be recycled. The process avoids environmental and other hazards associated with the use of cyanide to extract gold.
IN1917MUN2014 2012-04-09 2013-04-08 IN2014MN01917A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261621617P 2012-04-09 2012-04-09
PCT/CA2013/000337 WO2013152424A1 (en) 2012-04-09 2013-04-08 Chloride process for the leaching of gold

Publications (1)

Publication Number Publication Date
IN2014MN01917A true IN2014MN01917A (en) 2015-07-10

Family

ID=49326969

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1917MUN2014 IN2014MN01917A (en) 2012-04-09 2013-04-08

Country Status (8)

Country Link
US (1) US9732398B2 (en)
EP (1) EP2836617A4 (en)
AU (1) AU2013247340A1 (en)
CA (1) CA2869158C (en)
CL (1) CL2014002703A1 (en)
IN (1) IN2014MN01917A (en)
WO (1) WO2013152424A1 (en)
ZA (1) ZA201407203B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11408053B2 (en) 2015-04-21 2022-08-09 Excir Works Corp. Methods for selective leaching and extraction of precious metals in organic solvents
CN110607457A (en) * 2019-10-18 2019-12-24 广西森合高新科技股份有限公司 Refractory gold concentrate roasting slag leaching agent, gold leaching method and gold extraction method
WO2022022987A1 (en) * 2020-07-27 2022-02-03 Centuro Ag Method for obtaining gold and silver from raw materials
LU102054B1 (en) * 2020-07-27 2022-01-27 Centuro Ag Process for extracting gold and silver from raw materials
MX2023002015A (en) 2020-08-18 2023-04-11 Enviro Metals Llc Metal refinement.
CA3203224A1 (en) * 2021-01-22 2022-07-28 Christian Kujawa Recovery of metal from leach processing

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244735A (en) * 1979-07-27 1981-01-13 Hazen Research, Inc. Chloride leach process for recovering metal values in the presence of arsenic
EP0113454B1 (en) * 1983-01-05 1987-02-04 American Cyanamid Company Extraction of silver and palladium metals from aqueous solutions using tertiary phosphine sulfides
US4551213A (en) 1984-05-07 1985-11-05 Duval Corporation Recovery of gold
CA1306613C (en) * 1987-05-15 1992-08-25 Guy Deschenes Recovery of gold from aqueous solutions
US6660059B2 (en) * 2000-05-19 2003-12-09 Placer Dome Technical Services Limited Method for thiosulfate leaching of precious metal-containing materials
EA005464B1 (en) * 2000-07-25 2005-02-24 Фелпс Додж Корпорейшн Method for recovering copper
FI113667B (en) 2002-04-23 2004-05-31 Outokumpu Oy Method for recovering gold
FI115534B (en) 2002-10-15 2005-05-31 Outokumpu Oy Process for extraction of metals by means of chloride solution and extraction
JP3741117B2 (en) * 2003-09-26 2006-02-01 住友金属鉱山株式会社 Mutual separation of platinum group elements
CA2478516C (en) * 2003-09-30 2007-12-11 Jaguar Nickel Inc. A process for the recovery of value metals from base metal sulfide ores
WO2005049872A1 (en) 2003-11-19 2005-06-02 Process Research Ortech Inc. Process for the recovery of titanium in mixed chloride media
WO2006013568A2 (en) 2004-08-04 2006-02-09 Berg Recycling Industries Ltd. Recovery of precious metals from electronic scrap by hydrometallurgical processing
FI117559B (en) 2005-02-16 2006-11-30 Outokumpu Oy Procedure for extracting gold from a gold-containing solution
FI118429B (en) 2005-02-16 2007-11-15 Outokumpu Oy Method for recovering gold from sulphide concentrate
FI118302B (en) 2006-02-17 2007-09-28 Outotec Oyj Procedure for the extraction of gold
ES2352404B1 (en) 2009-08-04 2011-10-24 Grupo Empresarial De Servicios Mecanicos, S.L NUT MOUNTING SYSTEM ON SMOOTH AXLES.
WO2011156861A1 (en) * 2010-06-15 2011-12-22 The University Of Queensland Method of recovering a metal

Also Published As

Publication number Publication date
EP2836617A1 (en) 2015-02-18
AU2013247340A1 (en) 2014-10-16
CA2869158A1 (en) 2013-10-17
EP2836617A4 (en) 2016-01-13
US9732398B2 (en) 2017-08-15
CL2014002703A1 (en) 2015-05-04
ZA201407203B (en) 2017-08-30
CA2869158C (en) 2021-01-05
US20130283976A1 (en) 2013-10-31
WO2013152424A1 (en) 2013-10-17

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