Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1984-12-10
1986-09-23
Nozick, Bernard
Classifying, separating, and assorting solids
Fluid suspension
Liquid
209170, B03D 102
Patent
active
046134301
ABSTRACT:
An improved froth flotation installation for separating solid particles from an aqueous slurry by delivering a stream of the aqueous slurry directly into a vortex chamber along with a supply of bubble-forming gas. The kinetic energy of the slurry creates necessary froth bubbles, and provides mechanical agitation of the contents of a froth flotation separation zone upon discharge from the bottom of the vortex chamber. In multi-zone froth flotation installations, the direction of flow of the aqueous slurry of unrecovered solid particles is deliberately changed at least twice between a first froth flotation zone and a last froth flotation zone to improve solids-froth contact and to minimize the possibility of particles adopting a short circuit path through the installation. Multiple froth flotation zones are serviced by a single slurry pump in a preferred embodiment.
REFERENCES:
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patent: 1440129 (1922-12-01), Borcherdt
patent: 2248177 (1941-07-01), Karlstrom
patent: 3261779 (1966-07-01), Lullins et al.
patent: 3400818 (1968-09-01), Tarjan
patent: 3446353 (1969-05-01), Davis
patent: 4186094 (1980-01-01), Hellberg
patent: 4477338 (1984-10-01), Hellman
Keck Harry B.
Nozick Bernard
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