细粒煤炭磁稳定流化床干法分选技术的研究  

Study on Fine Coal Separation in Magnetically Stabilized Fluidized Beds

作　　者：樊茂明[1] 陈清如[1] 赵跃民[1] 骆振福[1] 

机构地区：[1]中国矿业大学化工学院,江苏徐州221008

出　　处：《中国矿业大学学报》2001年第6期547-549,共3页Journal of China University of Mining & Technology

基　　金：国家杰出青年基金资助项目 ( 5 0 0 2 5 411) ;国家自然科学基金资助项目 ( 5 99740 30)

摘　　要：介绍一种适合于细粒煤炭 (6～ 0 .5 mm)干法分选的磁稳定流化床干法分选新技术 .磁稳定流化床是在含有磁性介质的流化床中沿气流方向施加一均匀稳定的外加磁场 ,使聚式流化床散式化 ,气泡变小或消失 ,可有效地消除普通流化床中存在的分选后物料返混现象 ,因此 ,可以提高分选效率 .这里将讨论磁性介质 (磁珠 )的性质及其流化特性、磁场抑制气泡产生和消泡的机理。A new technology of magnetically stabilized beds for separating fine coal (6 to 0.5 mm) was presented. The magnetically stabilized bed in which a weak spatially uniform and invariant in time magnetic field is applied along the line of fluidizing gas flow can eliminate gas bubbling and prevent the back mixing of the separated solids. Therefore it can bring fine coal separation into effect. The fluidization media characteristics, the principle of coal separation in magnetically stabilized fluidized beds, and the separation results were discussed.

关 键 词：磁珠 磁稳定流化床 选煤 分选机 干法分选 流化介质 

分 类 号：TD94[矿业工程—选矿]