Recovery of silver, copper and zinc from partially roasted pyrit

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

1978-04-17

1979-12-04

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75101BE, 75117, 75118R, 75120, 423 24, 423566, 423571, C22B 1106, C22B 1508, C22B 1304

Patent

active

041770676

ABSTRACT:
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 open the pyrite matrix to solution penetration followed by hydrometallurgical steps, including ferric sulphate leaching, reduction leaching, solid-liquid separation and metal extraction steps, to recover the copper and zinc separately and silver in concentrated form.

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