Compositions – Physical separation agents – Froth-flotation or differential adherence
Patent
1989-09-20
1991-09-24
Silverman, Stanley S.
Compositions
Physical separation agents
Froth-flotation or differential adherence
209166, B03D 1016
Patent
active
050511998
ABSTRACT:
Particles of a desired mineral are recovered from particles of an unwanted mineral in an aqueous slurry by means of a froth flotation process in which, after treatment of the mineral particles with a collector, a predominantly hydrophobic polymeric flocculating agent, which will selectively flocculate the desired mineral particles, is added to the slurry.
The predominantly hydrophobic polymeric flocculating agent may be for example a polyvinyl ether or a polybutandiene and may be predispersed in a carrier liquid, which may be the frother used to produce the froth.
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Littlefair et al., "On the Selective Flocculation of Coal Using Polystyrene Latex" Intl Jour. of Mineral Proc. 17 (1986), pp. 187-203.
Brookes et al., "The Selective Flocculation of Coal/Shale. . . " XIV Intl. Min. Processing Cong. Oct. 17-23, 1982, pp. VII-7, 1-VII-7, 17.
Fospur Limited
Lithgow Thomas M.
Silverman Stanley S.
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