Determination of coal preparation process in Zhaogu No.1 mine coal preparation plant

The analysis of raw coal size composition,float-and-sink experiments,flotability evaluation and calorific capacity show that,the raw coal is friable,gangue degrade easily,there are high ash fine mud in slime,raw coal and slack coal is easy to flotine.Based on the property of raw coal and products positioning,provide the coal preparation process,the lower limit of separation of slack coal is 1.5 mm,which could be adjusted to 0.25 mm and 0.The primiary separation and recleaning of lump coal whose particle diameter ranges from 80 mm to 13(10) mm adopts dense-medium shallow-slot separator,the preparation of slack coal whose particle diameter ranges from 13(10)mm and 1.5 mm,1.50 mm to 0.25 mm,-0.25 mm respectively use three-product HM cyclone,TBS and flotation column.Introduce the design procedure of coal preparation.Taking coal analysis as basis,product mix as goal,according to the characteristics of facilities and specific links,determine the proper coal preparation process,which is concise,effective and flexible.