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1. (WO2019060961) PROCESS FOR ACIDIC LEACHING OF PRECIOUS AND CHALCOPHILE METALS
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Pub. No.: WO/2019/060961 International Application No.: PCT/AU2018/051060
Publication Date: 04.04.2019 International Filing Date: 27.09.2018
IPC:
C22B 3/16 (2006.01) ,C22B 3/04 (2006.01) ,C22B 11/00 (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
04
by leaching
16
in organic solutions
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
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
Applicants:
CURTIN UNIVERSITY [AU/AU]; Kent Street Bentley, Western Australia 6102, AU
Inventors:
ABDALLA, Elsayed Abdelrady Oraby; AU
EKSTEEN, Jacobus Johannes; AU
Agent:
GRIFFITH HACK; GPO Box 1285 Melbourne, Victoria 3001, AU
Priority Data:
201790392127.09.2017AU
Title (EN) PROCESS FOR ACIDIC LEACHING OF PRECIOUS AND CHALCOPHILE METALS
(FR) PROCÉDÉ DE LIXIVIATION ACIDE DE MÉTAUX PRÉCIEUX ET CHALCOPHILES
Abstract:
(EN) A process for recovery of one or more elements, selected from precious metals and chalcophile metals as herein defined, from materials containing precious and/or chalcophile metal/s, said process including: (i) a leaching step comprising contacting the material with an acidic solution containing a lixiviant comprising an aqueous amino acid-thiourea compound formed from an amino acid (as herein defined) and thiourea (as herein defined), in order to form a leachate containing the precious metal and/or chalcophile metal; and (ii) a recovery step comprising recovering the precious metal and/or chalcophile metal from the leachate.
(FR) L'invention concerne un procédé de récupération d'un ou de plusieurs éléments, choisis parmi les métaux précieux et les métaux chalcophiles, tels que définis dans la description, dans des matériaux contenant un ou plusieurs métaux précieux et/ou chalcophiles, ledit procédé comprenant : (i) une étape de lixiviation comprenant la mise en contact du matériau avec une solution acide contenant un agent de lixiviation comprenant un composé thio-urée-acide aminé aqueux formé à partir d’un acide aminé (tel que défini ici) et de la thio-urée (telle que définie ici), afin de former un lixiviat contenant le métal précieux et/ou le métal chalcophile ; et (ii) une étape de récupération comprenant la récupération du métal précieux et/ou du métal chalcophile dans le lixiviat.
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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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, 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, ST, 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)