气固流化床中气泡的行为及其对分选过程的作用机理研究  

Study on Bubbling Action in Air Solid Fluidized-Bed and Action Mechanism in Preparation

作　　者：陶秀祥[1] 陈清如[1] 杨毅[1] 骆振福[1] 

机构地区：[1]中国矿业大学

出　　处：《煤炭科学技术》1998年第9期12-15,共4页Coal Science and Technology

摘　　要：介绍了流化床选煤的基本特性和分选原理。从气固两相流的相互运动和作用入手，研究选煤流化床中气泡的行为及其对分选过程的影响，通过实验研究得出选煤流化床气速的操作范围，建立了煤炭在流化床中的分选模型。Abstract This paper introduced a basic features of a fluidized-bed coal preparation, such as a separation principle. From a mutual movement and action of air - solid two phase flow, the paper studied the action of air bubbling in the coal preparation fluidized-bed and the influence of the separation processing. After a lab study, an air velocity operation rang of the fluidized-bed was made and a separation mode of coal fluidized-bed was made. This is a new dry separation technology with a high efficiency and high accuracy which will be new and effective access to the coal separation in water shortage area and low temperature area.

关 键 词：选煤 流化床 气泡行为 分选 作用机理 

分 类 号：TD942.13[矿业工程—选矿]