Dissolution of nickeliferous sulfide material in HCl

Details Dissolution of nickeliferous sulfide material in HCl Dissolution of nickeliferous sulfide material in HCl

1979-02-16

1980-12-23

Hearn, Brian E.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

423 47, 423 48, 423154, 75 6, 75119, C01G 5308

Patent

active

042410312

ABSTRACT:
A process is provided for leaching nickeliferous sulfide material, such as NiS precipitate and thermally activated nickel sulfide material, e.g., nickel matte, the process comprising subjecting nickeliferous sulfide material in the finely divided state to leaching in hydrochloric acid of concentration ranging from about 3 N to 8 N at a temperature of over 50.degree. C., the temperature and acid concentration being selected to dissolve at least about 50% by weight of the total contained nickel.

REFERENCES:
patent: 940292 (1909-11-01), Wells
patent: 1044316 (1912-11-01), Wells
patent: 1266775 (1918-05-01), Dhavernas
patent: 1756092 (1930-04-01), Lathe
patent: 2223239 (1940-11-01), Hamprecht
patent: 2239626 (1941-04-01), Schlecht
patent: 2753259 (1956-07-01), Schlecht
patent: 3085054 (1963-04-01), Thornhill
patent: 4067952 (1978-01-01), Pittie
Thornhill, "The Falconbridge Matte Leach Process", Journal of Metals, Jul., 1971, pp. 13-18.

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