Promotors for froth floatation of coal
AssigneeSherex Chemical Company, Inc.
InventorRobert O. Keys
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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 hydrophobic, non-ionc promoter which is a C.sub.12 -C.sub.30 fatty alcohol or its C.sub.3 or higher alkoxylated derivative.
Claims9
In a froth flotation process wherein solid coal particles are selectively separated under coal froth flotation conditions as a froth phase from remaining solid feed ash particles as an aqueous phase in the presence of a coal particle collector and a frother, the improvement characterized by the addition of an effective proportion of a hydrophobic, non-ionic promoter comprising a C.sub.12 -C.sub.30 fatty alcohol or its C.sub.3 or higher alkoxylated derivative.
Dependencies are inferred from the claim text.