Flotation of fine-grained materials

Details Flotation of fine-grained materials Flotation of fine-grained materials

1975-01-16

1976-09-07

Halper, Robert

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209169, B03D 100

Patent

active

039792820

ABSTRACT:
A process for treating fine minerals, for example clays, to separate therefrom mineral impurities. The fine mineral is conditioned in the form of an aqueous slurry containing a deflocculant, for example sodium silicate, and a collector is added to the aqueous slurry of the mineral which is then subjected to a froth flotation process in a flotation cell having a central, internal, submerged impellor which comprises a base plate, to which there are attached a plurality of blades in radial arrangement, and a stationary cover plate which is separated from the tips of the blades by a small clearance, the impellor being rotated at a peripheral speed of at least 2000 feet/minute.

REFERENCES:
patent: 2073148 (1937-03-01), Gayford
patent: 2569680 (1951-10-01), Leek
patent: 2693877 (1954-11-01), Drake
patent: 2894628 (1959-07-01), Duke
patent: 2944802 (1960-07-01), Danan
patent: 3202281 (1965-08-01), Weston
patent: 3224582 (1965-12-01), Fannicelli
patent: 3302785 (1967-02-01), Greene
patent: 3307790 (1967-03-01), Cohn
patent: 3353668 (1967-11-01), Duke
patent: 3378141 (1968-04-01), Wauman
patent: 3450257 (1969-03-01), Cundy
chem Abst. 67, 1967, 92155 p.

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