空气重介流化床低密度选煤的理论与实践  

Theory and Practice of Low Density Coal Dry Beneficiation with Air Dense Medium Fluidized Bed

作　　者：骆振福[1] 陶秀祥[1] 陈清如[1] 杨毅[1] 

机构地区：[1]徐州中国矿业大学煤综合利用系

出　　处：《中国矿业大学学报》1996年第3期48-53,共6页Journal of China University of Mining & Technology

摘　　要：阐述了空气重介流化床低密度分选的理论，并对具有一定粒级的磁珠的流化特性进行了分析测定．试验结果表明：空气重介流化床采用磁珠作为加重质可以形成低密度床层，能有效地分选５０～６ｍｍ级煤炭，分选密度可在１．２～１．５ｇ／ｃｍ３之间调节，可能偏差Ｅｐ值达０．０５．The theory of low density beneficiation with air dense medium fluidized bed and the fluidizing characteristics of magnetic pearls with a specific size distribution are analysed in this paper. The experimental results show that air dense medium fluidized bed can form a low density fluidized bed with magnetic pearls as medium solids, and beneficiate effectively the coal of 50～6 mm size with beneficiation densities of 1.2～l.5g/cm3 and a probable error Ep value of 0.05.

关 键 词：流化床 分选 空气重介质 选煤 

分 类 号：TD942.13[矿业工程—选矿]