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

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

1978-04-17

1979-09-25

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75117, 75118R, 75120, 423 24, 423511, 423571, C22B 1106, C22B 1508, C22B 1922, C22B 1304

Patent

active

041689690

ABSTRACT:
A process for treating a pyrite concentrate containing silver, copper, lead 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 various hydrometallurgical steps, including oxidation and reduction leaching, solid-liquid separation and metal extraction steps, to recover the copper and silver together, and the lead and zinc separately.

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