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1. (WO2001031072) A METHOD OF OPERATING A BIOLEACH PROCESS WITH CONTROL OF REDOX POTENTIAL
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/031072 International Application No.: PCT/ZA2000/000196
Publication Date: 03.05.2001 International Filing Date: 23.10.2000
Chapter 2 Demand Filed: 22.05.2001
IPC:
C22B 3/18 (2006.01) ,C22B 15/00 (2006.01)
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
B
PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
3
Extraction of metal compounds from ores or concentrates by wet processes
18
with the aid of micro-organisms or enzymes, e.g. bacteria or algae
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
B
PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
15
Obtaining copper
Applicants: PINCHES, Anthony[ZA/ZA]; ZA (UsOnly)
GERICKE, Mariekie[ZA/ZA]; ZA (UsOnly)
VAN ROOYEN, Johan, Vincent[ZA/ZA]; ZA (UsOnly)
MINTEK[ZA/ZA]; Block 9900 Minpark 200 Hans Strijdom Drive Randburg, 2125, ZA (AllExceptUS)
Inventors: PINCHES, Anthony; ZA
GERICKE, Mariekie; ZA
VAN ROOYEN, Johan, Vincent; ZA
Agent: VAN DER WALT, Louis, Stephanus; Adams & Adams Pretoria Office Adams & Adams Place 1140 Prospect Street, Hatfield PO Box 1014 0001 Pretoria, ZA
Priority Data:
99/679028.10.1999ZA
99/705711.11.1999ZA
Title (EN) A METHOD OF OPERATING A BIOLEACH PROCESS WITH CONTROL OF REDOX POTENTIAL
(FR) TECHNIQUE PERMETTANT DE PROCEDER A UNE LIXIVIATION BIOLOGIQUE AVEC MAITRISE DU POTENTIEL D'OXYDO-REDUCTION
Abstract:
(EN) A method of operating a bioleach process for the leaching of a sulfide bearing oreor concentrate includes subjecting a bioleach slurry which includes dissolved oxygen, dissolved carbon dioxide, sulphide and microorganisms to a bioleach stage, and controlling the redox potential of the bioleach slurry within a predetermined range.
(FR) Cette technique de lixiviation biologique permettant de procéder à la lixiviation de minerai ou de concentrat renfermant un sulfure, consiste à soumettre à une lixiviation biologique une bouillie renfermant de l'oxygène et du dioxyde de carbone dissous, un sulfure et des micro-organismes, ainsi qu'à agir sur le potentiel d'oxydo-réduction de la bouillie pour maintenir cette oxydo-réduction dans une plage prédéterminée.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)