which coal benificiation method is the best

The Beneficiation Methods Of Fine Coal Hydrocyclone Froth flotation is probably the best-established method of cleaning minus 0 5 mm fines and is in extensive use abroad In South Africa however froth flotation was confined until recently to the upgrading of coking-coal fines -which coal benificiation method is the best-,Patent US8925729 Method for the beneficiation of coal The present invention relates to the beneficiation of coal by the process of froth flotation and Method for the beneficiation of coal Coal Industry Patents ……

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