Production of sulphidic copper concentrates

Details Production of sulphidic copper concentrates Production of sulphidic copper concentrates

1979-09-10

1981-04-07

Hearn, Brian E.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 22, 423 39, 423 48, 423 99, 423100, 423109, 423150, C01G 312, C01G 5108, C01G 5308, C01G 904

Patent

active

042605881

ABSTRACT:
A process for the production of a sulphidic copper concentrate from a complex sulphidic concentrate containing as its main constituents copper, iron and at least one non-ferrous metal selected from the group consisting of zinc, lead, nickel and cobalt, comprising mixing the complex sulphidic concentrate with a copper-containing predominantly chloridic solution thereby to form a suspension, and treating the suspension thus obtained at elevated temperature and pressure at a pH-value of below 3, thereby to form a sulphidic copper concentrate, thereby the non-ferrous metals being extracted from the concentrate without formation of significant amount of acid. Precious metals may also be present. Advantageously the ratio by weight of the complex concentrate added to the copper-containing predominantly chloridic solution to the copper content of the solution is such that the predominantly chloridic solution after being at least partly freed from copper by an exchange reaction has a potential at 60.degree. C. of at least about 400 mV versus the standard hydrogen electrode.

REFERENCES:
patent: 1588806 (1926-06-01), Pike
patent: 3655538 (1972-04-01), Renken
patent: 3674424 (1972-07-01), Stanley
patent: 3776826 (1973-12-01), Atadan
patent: 3785944 (1974-01-01), Atwood
patent: 3957602 (1976-05-01), Johnson
patent: 3998628 (1976-12-01), Gandon
patent: 4023964 (1977-05-01), DeMarthe

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