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《Clean Coal Technology》 2012-01
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Research on ways of reducing medium consumption in Liangbei coal preparation plant

LU He-de1,ZI Tao1,2,LI Bing-cai1,HAN Heng-wang1,CHEN Wen-kan2(1.Liangbei Coal Preparation Plant,Henan Shenhuo Group Co.,Ltd.,Yuzhou 461670,China; 2.School of Chemical Engineering and Technology,China University of Mining and Technology,Xuzhou 221008,China)  
The analysis of raw coal properties shows that coal slime content is so large that should be separated by pre-desliming dense medium cyclone.To reduce medium consumption,comprehensively analyze change of coal properties,efficiency of demedium,management of magnetic equipments,adjustment of bypass flow and the like.The medium consumption are reduced from 2.46 kg/t to 0.65 kg/t,the cost also be reduced by 2.085 million yuan annually,those better results are achieveed by improving efficiency of desliming,adjusting sifters arrangement and magnetic equipments structure,changing sifters combination in mixing medium process,strengthening water spray management,adding clean coal demagnetizer,controlling water leakage,conducting refined management.Those measures effectively reduce the medium consumption and improve the benefits.
【CateGory Index】: TD928
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