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1. (WO2014191832) METHOD FOR PRE-TREATMENT OF GOLD-BEARING OXIDE ORES
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2014/191832 International Application No.: PCT/IB2014/001378
Publication Date: 04.12.2014 International Filing Date: 28.05.2014
IPC:
C22B 11/00 (2006.01) ,C22B 3/04 (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
11
Obtaining noble metals
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
04
by leaching
Applicants: BARRICK GOLD CORPORATION[CA/CA]; BCE Place, Canada Trust Tower 161 Bay Street, Suite 3700 Toronto, ON M5J 2S1, CA
Inventors: CHOI, Yeonuk; CA
GHARELAR, Ahmad, Ghahremaninezhad; CA
Priority Data:
61/828,55829.05.2013US
Title (EN) METHOD FOR PRE-TREATMENT OF GOLD-BEARING OXIDE ORES
(FR) PROCÉDÉ DE PRÉTRAITEMENT DE MINERAIS OXYDÉS AURIFÈRES
Abstract:
(EN) The disclosure relates to pre-treatment of precious metal-bearing oxide ores, prior to precious metal leaching by thiosulfate. The process comprises mixing oxide ore in oxygenated water in the presence of a carbon-based material (e.g., activated carbon or other type of carbon). The carbon-based material can be separated from the ore slurry, and, the gold is thereafter leached by a thiosulfate lixiviant.
(FR) L'invention concerne le prétraitement de minerais oxydés contenant des métaux précieux, avant la lixiviation des métaux précieux par le thiosulfate. Le procédé comprend le mélange du minerai oxydé dans de l'eau oxygénée en présence d'un matériau à base de carbone (par exemple, charbon actif ou un autre type de carbone). Le matériau à base de carbone peut être séparé de la boue de minerai et l'or est ensuite lixivié par un lixiviant à base de thiosulfate.
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)