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Machine translation
1. (WO2006117424) METHOD FOR THE RECOVERY OF VALUABLE METALS AND ARSENIC FROM A SOLUTION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2006/117424    International Application No.:    PCT/FI2006/000131
Publication Date: 09.11.2006 International Filing Date: 25.04.2006
IPC:
C22B 3/20 (2006.01), C22B 3/44 (2006.01)
Applicants: OUTOTEC OYJ. [FI/FI]; Riihitontuntie 7, FI-02200 Espoo (FI) (For All Designated States Except US).
POIJÄRVI, Jaakko [FI/FI]; (FI) (For US Only).
NUPPONEN, Raimo [FI/FI]; (FI) (For US Only).
MÄKINEN, Tuula [FI/FI]; (FI) (For US Only).
ROMPPANEN, Jaana [FI/FI]; (FI) (For US Only)
Inventors: POIJÄRVI, Jaakko; (FI).
NUPPONEN, Raimo; (FI).
MÄKINEN, Tuula; (FI).
ROMPPANEN, Jaana; (FI)
Agent: OUTOTEC OYJ; IPR Management, P.O.Box 86, FI-02201 Espoo (FI)
Priority Data:
20050471 03.05.2005 FI
Title (EN) METHOD FOR THE RECOVERY OF VALUABLE METALS AND ARSENIC FROM A SOLUTION
(FR) PROCEDE DE RECUPERATION DE METAUX DE VALEUR ET D'ARSENIC CONTENUS DANS UNE SOLUTION
Abstract: front page image
(EN)The invention relates to a method for the treatment of material containing at least one valuable metal and arsenic to form a valuable metal-depleted scorodite sediment and a pure aqueous solution to be discharged from the process. According to the method, the valuable metals are first removed from the material to be treated and then arsenic precipitation from the solution is performed in two stages. By means of the method, the aim is to obtain as low a valuable metal content as possible in the scorodite sediment that will be formed. Likewise, the arsenic and valuable metal content of the aqueous solution that is formed during arsenic precipitation also remains so low that the water can be released into the environment.
(FR)L'invention porte sur un procédé de traitement d'un matériau contenant au moins un métal de valeur et de l'arsenic, et permettant de former un sédiment de scorodite appauvri en métal de valeur et une solution d'eau pure à rejeter. Selon le procédé les métaux de valeur sont d'abord extrait du matériau à traiter, puis on fait précipiter l'arsenic de la solution en deux étapes. Le but du procédé est d'obtenir un sédiment de scorodite aussi pauvre que possible en métaux de valeur. De plus la teneur en métaux de valeur et en arsenic de la solution traitée est si basse qu'elle peut être rejetée dans l'environnement.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: Finnish (FI)