Application of four size fraction coal preparation process in Handan coal preparation plant

The four size fraction coal preparation process in Handan coal preparation plant has remarkable technical characteristics such as sophisticated,digitized,international,integrated and simplified.Analyse its effect through carrying out the check tests for pressureless three-product dense medium cyclone and CSS coarse slime separator.Its operation helps large-diameter hydrocyclone better prepare fine coal,improve the separation precision of cyclone,obtain qualified clean coal.The practical yield is 58.88 percent,the quantity efficiency is 95.96 percent,the possible deviation Ep1,Ep2 is 0.025,0.055,the medium consumption for each ton of raw coal is only 0.65 kg,the ash of final clean coal gotten by CSS coarse slime separator is around 9.00 percent,the average field of clean coal is 81.25 percent,the quantity efficiency is 98.52 percent,Ep is 0.07,the coal ranging from 1.0 mm to 0.5 mm could be accurately separated.The process combining desliming,pressureless,four size fraction,slime two-stage concentration and two-stage recovery techniques can nicely separate coal.