Study on Crushing and Cleaning Technology of Middling Coal in Coal Preparation Plant
In order to solve the problems of energy waste and low economic benefits caused by the high ash and sulfur indicators of middling coal products in the coal preparation plant,which can not be directly used in coking production,the design of the crushing and re-separation process of middling coal was correspondingly completed by carrying out the direct relationship research between the yield of clean coal and the crushing particle size of middling coal,as well as the ash content of middling coal and other indicators.It was predicted that the yield of clean coal through flotation and without flotation exceeded 35%,reaching the expected index requirements.
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