Roast-reductive leach process for copper recovery

Details Roast-reductive leach process for copper recovery Roast-reductive leach process for copper recovery

1978-03-02

1979-01-23

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 7, 75108, 75115, 75119, 423 36, 423 41, 423141, C22B 1508

Patent

active

041359186

ABSTRACT:
A sulfide containing copper and one or more of iron, nickel and cobalt, is dead-roasted at a temperature of 750.degree. C or above, then subjected to a pressure leach under reducing conditions to produce elemental copper and an aqueous solution of the other metals.

REFERENCES:
patent: 790238 (1905-05-01), Wilcox
patent: 2716588 (1955-08-01), Hall
patent: 2796342 (1957-06-01), Schaufelberger et al.
patent: 2817583 (1957-12-01), Schlecht et al.
patent: 3573896 (1971-04-01), Hori et al.
patent: 3684489 (1972-08-01), Emicke et al.
patent: 3744994 (1973-07-01), Emicke et al.
patent: 3839013 (1974-10-01), Turkdogan et al.
patent: 4067952 (1978-01-01), Pittie et al.
Shirts et al., Bureau of Mines Report of Investigations 7996, (1975).

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