Promoters for froth flotation of coal

Classifying – separating – and assorting solids – Fluid suspension – Liquid

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252 61, B03D 102

Patent

active

045899800

ABSTRACT:
Disclosed is an improved process wherein coal particles are beneficiated by froth flotation under coal froth flotation conditions to separate the desired coal particles from remaining unwanted ash and like gangue material. The improvement of the present invention comprises conducting the froth flotation in the presence of an effective proportion of a promoter which is at least C.sub.10 aliphatic carboxylic acid or an aliphatic ester thereof which is devoid of nitrogen atoms; the hydroxylated, oxidized, or alkoxylated derivative of said acid or ester promoters; and mixtures thereof.

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Chem. Abstracts, vol. 93, No. 8, p. 226, Abstract 75578z, 8/80.

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