Coal flotation process

Details Coal flotation process Coal flotation process

1992-10-02

1995-08-22

Lithgow, Thomas M.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

252 61, B03B 104, B03D 102

Patent

active

054431581

ABSTRACT:
A process for the flotation of particles of lignitic coal, subbituminous coal or oxidized bituminous coal contained within a slurry of coal and gangue, comprising the steps of dispersing a surfactant throughout the slurry, first conditioning the slurry such that the surfaces of the particles of coal are selectively coated by the surfactant to produce activated particles of coal, dispersing an oil throughout the slurry, second conditioning the slurry such that the surfaces of the activated particles of coal are selectively coated by the oil to produce oiled particles of coal, and floating the oiled particles of coal on the surface of the slurry for separation from the slurry and gangue.

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Aplan, F. F., "Coal Properties Dictate Flotation Strategies", Mining Engineering, Jan. 1993, pp. 83-96.

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