Modified alcohol frothers for froth flotation of coal

Details Modified alcohol frothers for froth flotation of coal Modified alcohol frothers for froth flotation of coal

1985-01-25

1986-08-19

Nozick, Bernard

Classifying, separating, and assorting solids

Fluid suspension

Liquid

252 61, B03D 102

Patent

active

046068180

ABSTRACT:
Disclosed is an improved froth flotation process wherein solid coal particles are selectively separated under coal froth flotation conditions as a froth phase from remaining solid feed particles as an aqueous phase in the presence of a coal particle collector (e.g. a fuel oil), optionally a promoter, and an alcohol frother. The improvement in the present invention is characterized by the alcohol frother comprising the reaction product of a C.sub.4 -C.sub.10 diol and a compound selected from the group consisting of an alkylene oxide and an acrylonitrile. The resulting frothing agent has at least one hydroxyl group and provides greater coal recovery than use of the diol as the frothing agent.

REFERENCES:
patent: 2695101 (1954-11-01), Booth et al.
patent: 3595390 (1971-07-01), Booth
patent: 4394257 (1983-07-01), Wang et al.
Am Cyanamid--The Chemistry of Acrylonitrile, 2nd Edition, Am Cyanamid Co., Petro Dept., Rockefeller Plaza, New York, Table XX.
Polyethers--Gaylord Norman, Interscience Publishers, John Wiley & Sons, pp. 225-230.

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