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METHOD OF INCREASING THE YIELD OF DEEP MINED COAL UNDERGOING A CONCENTRATION TREATMENT OF FROTH FLOTATION
METHOD OF INCREASING THE YIELD OF DEEP MINED COAL UNDERGOING A CONCENTRATION TREATMENT OF FROTH FLOTATION
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机译:浮选浓缩处理提高深部煤产量的方法。
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摘要
A method and treating agent for increasing the yield of deep mined coal where the particles in the coal are concentrated by froth flotation. This method consists of utilizing as a promoter an invertible water-in-oil emulsion of sodium polyacrylate (0.017 - 0.5 lb of dry sodium polyacrylate per ton of dry coal), having an average molecular weight of about 100,000 to 1,000,000 and more. The promoter is preferably used with an alcohol-type frother. The emulsion may be utilized neat and self inverts with the assistance of an oil-in-water surfactant (or activator) and the water in the system upon application to form an oil-in-water emulsion, or it may be used as a two-part system with an activator (aqueous) to promote inversion.
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