Process for increasing the selectivity of mineral flotation

Details Process for increasing the selectivity of mineral flotation Process for increasing the selectivity of mineral flotation

1987-04-22

1988-04-05

Garvin, Patrick P.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 36, 423 45, 75 2, 252 61, 209901, B03D 102

Patent

active

047357835

ABSTRACT:
An aqueous solution containing a water soluble polyvalent metal sulphate, an alkali metal silicate and an alkali metal metabisulphite is described which is added to a slurry of a copper mineral bearing ore to be subjected to a froth flotation step for obtaining a copper concentrate. The aqueous solution is added to enhance the selectivity of conventional flotation collectors and depressants when the valuable minerals are finally disseminated in the host ore, which is then required to be ground to very small particle sizes to achieve the desired liberation. Other valuable minerals such as those bearing zinc and lead, may be recovered from the tailing.

REFERENCES:
patent: 3728430 (1973-04-01), Clitheroe et al.
patent: 4098687 (1978-07-01), Yang
patent: 4132635 (1979-01-01), Yang
patent: 4549959 (1985-10-01), Armstrong et al.
patent: 4579651 (1986-04-01), Bresson et al.

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