Process for the treatment of complex lead-zinc concentrates

Details Process for the treatment of complex lead-zinc concentrates Process for the treatment of complex lead-zinc concentrates

1976-12-01

1977-12-20

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75104, 75115, 75117, 75118R, 75120, 204117, 204119, C22B 1304

Patent

active

040639339

ABSTRACT:
Sulfide concentrates containing metals such as lead, zinc, copper and silver are treated to selectively recover these metals in high yields in a process wherein the concentrate is sequentially leached or extracted with sulfuric acid in the presence of oxygen; lime in the presence of sulfide ion; and ferric chloride. The leach solutions resulting from each extraction may then be treated to recover metals in their elemental state. The process does not produce sulfur oxides.

REFERENCES:
patent: 1154602 (1915-09-01), Best
patent: 1539713 (1925-05-01), Christensen
patent: 1572268 (1926-02-01), Christensen
patent: 1886162 (1932-11-01), Christensen
patent: 2655472 (1953-10-01), Hilliard et al.
patent: 2927017 (1960-03-01), Marvin
patent: 3316059 (1967-04-01), Vizsolyi et al.
patent: 3477927 (1969-11-01), Veltman et al.
patent: 3967107 (1976-07-01), Lippert et al.

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