Treatment of metal bearing mineral material

Details Treatment of metal bearing mineral material Treatment of metal bearing mineral material

1976-09-10

1978-04-18

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75115, 75117, 75118R, 75120, 75121, 75109, 423 41, C22B 1508, C22B 1104

Patent

active

040849619

ABSTRACT:
Pressure leaching metal bearing mineral material such as silver and copper bearing mineral material, e.g. sulfide and/or oxide, with an aqueous liquid containing sulfuric acid and very low concentration nitric acid under oxygen pressure, to dissolve out the corresponding desired metal values from such mineral material with nitric acid regeneration;

REFERENCES:
patent: 814294 (1906-03-01), Just
patent: 820000 (1906-05-01), Just
patent: 3107977 (1963-10-01), Borvali et al.
patent: 3793429 (1974-02-01), Queneau et al.
patent: 3888748 (1975-06-01), Brennecke
patent: 3910636 (1975-10-01), Hard
patent: 3933478 (1976-01-01), Moore

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