Leaching of copper-nickel concentrates

Details Leaching of copper-nickel concentrates Leaching of copper-nickel concentrates

1975-09-02

1978-01-10

Vertiz, O. R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 45, 423140, 423147, 423150, 204113, C01G 300, C01G 5308, C25C 108

Patent

active

040679527

ABSTRACT:
A process for the treatment of nickel-copper concentrates comprises the steps of leaching nickel selectively with a dilute hydrochloric acid solution, separating the leach solution from the residue, roasting the residue at a temperature sufficient to form at least about the stoichiometric quantity of sulphate to convert all the nickel present in the residue to nickel sulphate, leaching the roasted residue with water and precipitating any dissolved copper from the aqueous leach solution thus obtained.

REFERENCES:
patent: 483639 (1892-10-01), Strap
patent: 940292 (1909-11-01), Wells
patent: 967072 (1910-08-01), Shuler
patent: 1335000 (1920-03-01), Hovland et al.
patent: 2094277 (1937-09-01), Mitchell
patent: 2719082 (1955-09-01), Sproule et al.
patent: 2943929 (1960-07-01), Norman
patent: 3085084 (1963-04-01), Thornhill
patent: 3896208 (1975-07-01), Dubeck et al.
patent: 3909248 (1975-09-01), Ryan et al.

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