Abstract

As the reducing of petrol resource and the pollution of fuel coal becoming more and more hardly,water coal mixture (CWM) as a nwe unpolluted kind of caol liquid fuel have been more and more important.From 1970's to present,the abroad and civil professors have studied a lot of additives.The additives used in CWM howe two kinds:one is negative-ion surfactant and the other is non-ion surfactant,but the additives with high effective,low price and wide fitness are still very few.

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