Recovery of silver, copper and zinc from partially roasted...

Details Recovery of silver, copper and zinc from partially roasted... Recovery of silver, copper and zinc from partially roasted...

C - Chemistry, Metallurgy

22

B

53/225, 53/286,

C22B 11/00 (2006.01) C22B 15/00 (2006.01) C22B 19/00 (2006.01)

Patent

CA 1107973

Abstract of the Disclosure A process for treating a pyrite concentrate containing silver, copper and zinc to recover the metals contained therein is disclosed. The process includes the partial roasting of the concentrate to pen the pyrite matrix to solution penetration followed by hydro- metallurgical steps, including ferric sulphate leaching, reduction leaching, solid-liquid seperation and metal extraction steps, to recover the copper and zinc separately and silver in concentrated form.

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