Froth flotation method for stibnite

Details Froth flotation method for stibnite Froth flotation method for stibnite

1976-07-08

1978-03-28

Rutledge, L. Dewayne

Classifying, separating, and assorting solids

Fluid suspension

Liquid

75 2, B03D 102

Patent

active

040813649

ABSTRACT:
Disclosed is a process for concentrating stibnite (antimony sulfide) and separating it from iron sulfide minerals such as pyrite by froth flotation using untreated recirculated water or mine water which is acidic and may be heavily loaded with metal salts. The process features the use of a water-soluble zinc-cyanide complex salt to depress iron sulfide minerals. A conventional xanthate collector is employed. The process may also be applied to separate sulfides of arsenic, bismuth, tin and lead, as well as complexes of sulfides of arsenic, antimony, tin or bismuth, or mixtures of the aforementioned, from iron sulfide minerals or from sulfides of copper, zinc and nickel, or mixtures of the aforementioned.

REFERENCES:
patent: 3252662 (1966-05-01), Lyons et al.
patent: 3847357 (1974-11-01), Weston
patent: 4014474 (1977-03-01), Anttila et al.

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