Polyorganosiloxane collectors in the beneficiation of fine coal by froth flotation.

摘要

A froth flotation process for the beneficiation of fine coal is disclosed which employs as a collector a water-dispersible polyorganosiloxane or a mixture of water-dispersible polyorganosiloxanes which contain either aryl radicals or aryl radicals combined with polyethylene oxide and polypropylene oxide radicals. Preferred polyorganosiloxanes are those which contain both aryl radicals and polyethylene oxide and/or polypropylene oxide radical. The process of this invention is especially useful for the beneficiation of difficult-to-float fine coals.