煤粉粒级对空气重介质流化床干法分选影响研究  

Influence of Fine Coal Size Fractions on Air Dense Medium Fluidized Bed Dry Coal Beneficiation

作　　者：朱学帅[1] 万光显 吕薇 刘鹏[1] 陈赞歌 夏翰文 贾东方[1] 罗庆[1] 

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]山东新巨龙能源有限责任公司选煤厂,山东菏泽274918 [3]黑龙江省国土时代矿产评估有限公司矿产权评估部,哈尔滨150090

出　　处：《煤炭技术》2016年第4期288-290,共3页Coal Technology

基　　金：国家自然科学基金资助项目(51174214);国家科技支撑计划项目(2012BAA04B02);高等学校博士学科点专项科研基金(20120023110017)

摘　　要：为降低煤粉对空气重介质流化床干法分选过程的影响,以粉煤分层占比、床层压降波动、可能偏差Ep值为考察指标,研究了粉煤粒级变化对其在流化床中分布、流化、分选行为的影响。结果表明:煤粉在流化床床层中分布并不均匀,总体呈现上层偏多,中、下层偏少的趋势。In order to reduce the influence of fine coal on the process of dry separation for air dense medium fluidized bed, the influence of fine coal on distribution, fluidization, and separation behavior caused by variation of size fraction were studied. The content proportion of stratified fine coal,fluctuation of bed pressure drop, and probable error Epwere used to examine the experiments. The results show that the distribution of fine coal is not uniform in a fluidized bed. In general, there is a trend that fine coal in upper layer is more than that in middle and lower layer.

关 键 词：粉煤 粒级 床层压降 干法分选 

分 类 号：TD94[矿业工程—选矿]