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1. (WO2001000890) PROCESS FOR THE EXTRACTION OF COPPER
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/000890 International Application No.: PCT/GB2000/002426
Publication Date: 04.01.2001 International Filing Date: 23.06.2000
Chapter 2 Demand Filed: 10.01.2001
IPC:
C22B 1/00 (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
1
Preliminary treatment of ores or scrap
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:
ANGLO AMERICAN PLC [GB/GB]; 20 Carlton House Terrace London SW1Y 5AN, GB
Inventors:
DEMPSEY, Paul; GB
DREISINGER, David, Bruce; CA
Agent:
SKAILES, Humphrey, John; Frank B. Dehn & Co. 179 Queen Victoria Street London EC4V 4EL, GB
Priority Data:
9914979.125.06.1999GB
Title (EN) PROCESS FOR THE EXTRACTION OF COPPER
(FR) PROCESSUS D'EXTRACTION DE CUIVRE
Abstract:
(EN) A process for the extraction of copper from a copper sulphide containing concentrate such as chalcopyrite, involves dispersing the finely divided copper sulphide containing concentrate in an aqueous sulphuric acid solution to form a slurry; providing an effective amount of a suitable surfactant such as lignosol or quebracho; reacting with agitation the slurry and surfactant with free oxygen bearing gas in a pressure vessel at an elevated temperature to extract the copper values from the concentrate to produce the final leach solution containing dissolved copper values and a solid residue; and separating the final leach solution containing the dissolved copper values from the solid residue.
(FR) Selon cette invention, un processus d'extraction de cuivre à partir d'un concentré contenant du sulfure de cuivre tel que la chalcopyrite consiste à disperser le concentré finement moulu contenant du sulfure de cuivre dans une solution aqueuse d'acide sulfurique pour former une suspension, à ajouter une quantité efficace d'un surfactant approprié tel que Lignosol ou le quebracho, à faire réagir la suspension et le surfactant avec un gaz comportant de l'oxygène libre en agitant le mélange dans une cuve sous pression et à température élevée pour extraire le cuivre de valeur du concentré afin d'obtenir une solution de lixiviation finale qui contient le cuivre de valeur dissous et un résidu solide, puis à séparer la solution de lixiviation finale contenant le cuivre de valeur du résidu solide.
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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, 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)