WO2007034413A3 - Process for the indirect bioleaching of zinc sulphide - Google Patents

Process for the indirect bioleaching of zinc sulphide Download PDF

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Publication number
WO2007034413A3
WO2007034413A3 PCT/IB2006/053374 IB2006053374W WO2007034413A3 WO 2007034413 A3 WO2007034413 A3 WO 2007034413A3 IB 2006053374 W IB2006053374 W IB 2006053374W WO 2007034413 A3 WO2007034413 A3 WO 2007034413A3
Authority
WO
WIPO (PCT)
Prior art keywords
solvent extraction
ferric iron
iron
minimizing
zinc sulphide
Prior art date
Application number
PCT/IB2006/053374
Other languages
French (fr)
Other versions
WO2007034413A2 (en
Inventor
Stefan Walters Robertson
Original Assignee
Stefan Walters Robertson
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 Stefan Walters Robertson filed Critical Stefan Walters Robertson
Priority to CA2663356A priority Critical patent/CA2663356C/en
Publication of WO2007034413A2 publication Critical patent/WO2007034413A2/en
Publication of WO2007034413A3 publication Critical patent/WO2007034413A3/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
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/20—Obtaining zinc otherwise than by distilling
    • C22B19/22—Obtaining zinc otherwise than by distilling with leaching with acids
    • 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
    • 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
    • C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
    • C22B3/38—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
    • C22B3/384—Pentavalent phosphorus oxyacids, esters thereof
    • C22B3/3846—Phosphoric acid, e.g. (O)P(OH)3
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Microbiology (AREA)
  • Biotechnology (AREA)
  • Biochemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

A process for the indirect bioleaching of zinc sulphide is disclosed, and includes leaching, solvent extraction, electrowinning, and oxidant regeneration steps in a closed circuit. The leaching step utilizes ferric iron as an oxidant, the solvent extraction step utilizes di-2 ethylhexyl phosphoric acid (D2EHPA) as a solvent extraction reagent, the oxidant regeneration step includes the oxidation of ferrous iron to ferric iron in a ferric iron generator; and the process includes minimizing the loading of ferric iron onto the solvent extraction reagent in the solvent extraction step by means of one or more of the steps of minimizing the concentration of ferric iron in the leach stream and minimizing the oxidation of ferrous iron to ferric iron in the solvent extraction step.
PCT/IB2006/053374 2005-09-21 2006-09-19 Process for the indirect bioleaching of zinc sulphide WO2007034413A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2663356A CA2663356C (en) 2005-09-21 2006-09-19 Process for the indirect bioleaching of zinc sulphide

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2005/07632 2005-09-21
ZA200507632 2005-09-21

Publications (2)

Publication Number Publication Date
WO2007034413A2 WO2007034413A2 (en) 2007-03-29
WO2007034413A3 true WO2007034413A3 (en) 2007-06-07

Family

ID=37726598

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/053374 WO2007034413A2 (en) 2005-09-21 2006-09-19 Process for the indirect bioleaching of zinc sulphide

Country Status (3)

Country Link
CA (1) CA2663356C (en)
PE (1) PE20070729A1 (en)
WO (1) WO2007034413A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2245200A1 (en) * 2008-01-17 2010-11-03 Freeport-McMoran Corporation Method and apparatus for electrowinning copper using an atmospheric leach with ferrous/ferric anode reaction electrowinning

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5229903A (en) * 1990-01-26 1993-07-20 Nec Corporation Magnetic head with inclined core
GB2263416A (en) * 1992-01-24 1993-07-28 British Nuclear Fuels Plc Solvent extraction
AU654322B2 (en) * 1991-02-27 1994-11-03 Mount Isa Mines Limited Biological leaching of transition ores
USH2005H1 (en) * 1998-07-01 2001-11-06 Richard Winby Process for leaching low sulphur content materials

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5229903A (en) * 1990-01-26 1993-07-20 Nec Corporation Magnetic head with inclined core
AU654322B2 (en) * 1991-02-27 1994-11-03 Mount Isa Mines Limited Biological leaching of transition ores
GB2263416A (en) * 1992-01-24 1993-07-28 British Nuclear Fuels Plc Solvent extraction
USH2005H1 (en) * 1998-07-01 2001-11-06 Richard Winby Process for leaching low sulphur content materials

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
FERRON C.J.: "ATMOSPHERIC LEACHING OF ZINC SULPHIDE CONCENTRATES USING REGENERATED FERRIC SULPHATE SOLUTIONS", 2000, LEAD-ZINC 2000, ED. DUTRIZAC ET AL., XP009078987 *
HEARNE T M ET AL: "HYDROMETALLURGICAL RECOVERY OF ZINC FROM SULPHIDE ORES AND CONCENTRATES", ZINC AND LEAD PROCESSING, 1998, pages 765 - 780, XP001120253 *
PINA P S ET AL: "The effect of ferrous and ferric iron on sphalerite bioleaching with Acidithiobacillus sp", MINERALS ENGINEERING, PERGAMON PRESS , OXFORD, GB, vol. 18, no. 5, April 2005 (2005-04-01), pages 549 - 551, XP004789370, ISSN: 0892-6875 *

Also Published As

Publication number Publication date
PE20070729A1 (en) 2007-07-27
CA2663356C (en) 2015-06-02
WO2007034413A2 (en) 2007-03-29
CA2663356A1 (en) 2007-03-29

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