Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1975-01-23
1976-10-12
Ozaki, G.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75101R, 75109, 423 48, 423561, 423562, 423563, C22B 1508, C22B 1512
Patent
active
039855554
ABSTRACT:
Chalcopyrite is decomposed by treatment with aqueous acid solution and a metallic reductant to form either metallic copper or copper sulfide, ferrous iron and hydrogen sulfide.
REFERENCES:
patent: 1523444 (1925-01-01), Nevill et al.
patent: 1643922 (1924-03-01), Christensen
patent: 2647831 (1953-08-01), Allen et al.
patent: 3637371 (1972-01-01), Mackiw et al.
patent: 3798026 (1974-03-01), Milner et al.
patent: 3891522 (1975-06-01), McKay et al.
Shirts Monte B.
Staker Walter L.
Brown William S.
Fraser Donald R.
Ozaki G.
The United States of America as represented by the Secretary of
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