EP 0089184 A1 19830921 - Process for the recovery of silver from metallurgical intermediates.
Title (en)
Process for the recovery of silver from metallurgical intermediates.
Title (de)
Verfahren zur Gewinnung von Silber aus metallurgischen Zwischenprodukten.
Title (fr)
Procédé de récupération de l'argent à partir de matières intermédiaires métallurgiques.
Publication
Application
Priority
CA 398157 A 19820311
Abstract (en)
An aqueous slurry of the silver-containing intermediate is chlorinated to dissolve platinum group metals and gold having the silver in the residue, from which it is dissolved with an aqueous thiosulphate solution. When the intermediate contains lead, the thiosulphate leach solution should have a pH of at least 7. Silver is recovered from the final solution by cementation or reduction.
IPC 1-7
IPC 8 full level
C22B 11/06 (2006.01)
CPC (source: EP)
C22B 11/06 (2013.01)
Citation (search report)
- [Y] US 1071791 A 19130902 - PUGSLEY FRANK W [US]
- [AP] DE 3145006 A1 19820616 - SUMITOMO METAL MINING CO [JP]
- [Y] AT 140214 B 19350110 - EDER JOHANN
- [A] GB 151952 A 19210526 - AMALGAMATED ZINC DE BAVAY S LT
- [AD] US 3658510 A 19720425 - HOFFMANN JAMES E, et al
- [AD] US 4269622 A 19810526 - KERLEY JR BERNARD J
- [Y] Chemical Abstracts, vol. 75, no. 14, 4 October 1971, Columbus, Ohio, USA V.V. SAFONOV "Chlorination of copper-nickel anode slimes in a mediumn", page 395, column 2, Abstract 93960z & Tr. Mosk. Khim.-Teknnol. Inst. 1969, pages 161-1
Designated contracting state (EPC)
BE DE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 83301318 A 19830310; CA 398157 A 19820311