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WO1996000308A3 - Method and apparatus for extracting precious metals - Google Patents

Method and apparatus for extracting precious metals Download PDF

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Publication number
WO1996000308A3
WO1996000308A3 PCT/US1995/009199 US9509199W WO9600308A3 WO 1996000308 A3 WO1996000308 A3 WO 1996000308A3 US 9509199 W US9509199 W US 9509199W WO 9600308 A3 WO9600308 A3 WO 9600308A3
Authority
WO
WIPO (PCT)
Prior art keywords
ions
dissolved
dsm
species
water species
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US1995/009199
Other languages
French (fr)
Other versions
WO1996000308A2 (en
Inventor
Robert M Hunter
Frank M Stewart
Tamara Darsow
Macgregor L Fogelsong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Priority claimed from US08/265,322 external-priority patent/US5449397A/en
Application filed by Individual filed Critical Individual
Priority to CA002194349A priority Critical patent/CA2194349C/en
Priority to AU34899/95A priority patent/AU700356B2/en
Publication of WO1996000308A2 publication Critical patent/WO1996000308A2/en
Publication of WO1996000308A3 publication Critical patent/WO1996000308A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/18—Extraction of metal compounds from ores or concentrates by wet processes with the aid of microorganisms or enzymes, e.g. bacteria or algae
    • 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
    • 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)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Biotechnology (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Microbiology (AREA)
  • Biochemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

A method and apparatus (4) for extraction of precious metals from their ores and the product (26) thereof. Oxidized ore comprising a precious metal is exposed to a leaching solution (lixiviant) (254) comprising a relatively high concentration (activity) of dissolved hydrogen sulfide gas, a relatively high concentration (activity) of bisulfide ions, and a relatively low concentration (fugacity) of dissolved hydrogen gas. The hydrogen sulfide gas and bisulfide ions are preferably added to the solution by sulfate-reducing bacteria growing in a medium comprising dissolved sulfate ions and dissolved nitrate ions, but abiotic sources may also be used. Examples of such bacteria include mesophilic, fresh water species species such as Desulfobacterium catecholicum DSM 3882 and Desulfovibrio simplex DSM 4141; mesophilic, salt-water species such as Desulfovibrio salexigens DSM 2638; and thermophilic; fresh-water species such as Desulfomaculum kuznetsovii VKM B-1805.
PCT/US1995/009199 1994-06-24 1995-06-26 Method and apparatus for extracting precious metals Ceased WO1996000308A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002194349A CA2194349C (en) 1994-06-24 1995-06-26 Method and apparatus for extracting precious metals from their ores and the product thereof
AU34899/95A AU700356B2 (en) 1994-06-24 1995-06-26 Method and apparatus for extracting precious metals from their ores and the product thereof

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/265,322 1994-06-24
US08/265,322 US5449397A (en) 1994-06-24 1994-06-24 Biocatalyzed leaching of precious metal values
US08/436,726 US5672194A (en) 1994-06-24 1995-05-08 Method and apparatus for extracting precious metals from their ores and the product thereof
US08/436,726 1995-05-08

Publications (2)

Publication Number Publication Date
WO1996000308A2 WO1996000308A2 (en) 1996-01-04
WO1996000308A3 true WO1996000308A3 (en) 1996-02-15

Family

ID=26951124

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/009199 Ceased WO1996000308A2 (en) 1994-06-24 1995-06-26 Method and apparatus for extracting precious metals

Country Status (3)

Country Link
AU (1) AU700356B2 (en)
CA (1) CA2194349C (en)
WO (1) WO1996000308A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8883097B2 (en) 2006-11-15 2014-11-11 University Of Cape Town Sulfidisation process and apparatus for enhanced recovery of oxidised and surface oxidised base and precious metal minerals
CN102719669B (en) * 2012-07-06 2016-12-21 中国矿业大学(北京) The technique of biological vulcanizing agent sulfide modifier low grade copper oxide ore

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2526511C2 (en) * 2007-09-25 2014-08-20 Пасторал Гринхаус Гэз Рисерч Лтд Cell-penetrating peptides and polypeptides for microorganism cells
US11591669B2 (en) 2016-10-31 2023-02-28 Mint Innovation Limited Metal recovery process
EP3535427A4 (en) * 2016-11-03 2019-12-25 Mint Innovation Limited METAL RECOVERY PROCESS
SG11202002724QA (en) 2017-10-17 2020-04-29 Mint Innovation Ltd A process for recovering metal from electronic waste
CN112375911B (en) * 2020-11-02 2022-07-05 昆明理工大学 Direct recovery of (Au (S) with active carbon2O3)23-) Method (2)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4822413A (en) * 1986-03-13 1989-04-18 Davy Mckee (Stockton) Limited Extraction of metal values from ores or concentrates
US4974816A (en) * 1986-02-07 1990-12-04 Envirotech Corporation Method and apparatus for biological processing of metal-containing ores
US5127942A (en) * 1990-09-21 1992-07-07 Newmont Mining Corporation Microbial consortium treatment of refractory precious metal ores

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4974816A (en) * 1986-02-07 1990-12-04 Envirotech Corporation Method and apparatus for biological processing of metal-containing ores
US4822413A (en) * 1986-03-13 1989-04-18 Davy Mckee (Stockton) Limited Extraction of metal values from ores or concentrates
US5127942A (en) * 1990-09-21 1992-07-07 Newmont Mining Corporation Microbial consortium treatment of refractory precious metal ores

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8883097B2 (en) 2006-11-15 2014-11-11 University Of Cape Town Sulfidisation process and apparatus for enhanced recovery of oxidised and surface oxidised base and precious metal minerals
CN102719669B (en) * 2012-07-06 2016-12-21 中国矿业大学(北京) The technique of biological vulcanizing agent sulfide modifier low grade copper oxide ore

Also Published As

Publication number Publication date
CA2194349A1 (en) 1996-01-04
AU700356B2 (en) 1999-01-07
CA2194349C (en) 2006-05-30
AU3489995A (en) 1996-01-19
WO1996000308A2 (en) 1996-01-04

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