Selectively extracting copper, zinc, nickel from a mixture of me

Details Selectively extracting copper, zinc, nickel from a mixture of me Selectively extracting copper, zinc, nickel from a mixture of me

1977-06-15

1978-08-08

Hearn, Brian

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 32, 423105, 423109, 423139, 423150, 423 56, 423144, C01G 314, C01G 900, C01G 5312

Patent

active

041057430

ABSTRACT:
A mixture of metal hydroxides is leached with an ammoniacal carbonate solution, to dissolve nickel, copper and zinc. Metal is recovered from the leaching solution. The solid leaching residue is leached with sulphuric acid at a pH of 1.5- 3, to dissolve a further amount of nickel, copper and zinc. The acidic leaching solution is passed to the ammoniacal leaching process.

REFERENCES:
patent: 2837406 (1958-06-01), Schantelberger
patent: 3929598 (1975-12-01), Stern et al.
patent: 3953306 (1976-04-01), Lancy
patent: 3966569 (1976-06-01), Reinhardt et al.
patent: 3981966 (1976-09-01), Baucom

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