空气重介流化床选煤过程中介质动态平衡的研究  

RESEARCH ON MEDIUM DYNAMIC EQUILIBRIUM IN COAL CLEANING PROCESS WITH AIR DENSE MEDIUM FLUIDIZED BED

作　　者：骆振福[1] 陈清如[1] 

机构地区：[1]中国矿业大学

出　　处：《煤炭学报》1995年第3期260-265,共6页Journal of China Coal Society

摘　　要：通过对空气重介流化床选煤过程中介质动态平衡的研究，建立了流化床密度与介质中煤粉含量的关系模型，给出了分流量的计算方法，同时建立了分流量与流化床密度的数学模型，为流化床密度的在线测控提供了基础，试验研究表明，通过调节介质分流量，保持介质动态平衡和产品数质量指标，可能偏差Ｅｐ值达０．０３８～０．０６，取得了良好的结果。Based on investigation of medium dynamic equilibrium in coal cleaning process with an air dense medium fluidized bed, a model of the relation between the fluidized bed density and the content of coal fine in medium is described. And a method for calculating the split-flow rate is given. The mathematical model of the split-flow rate and the fluidized bed density is also established, which provided a basis for on-line measurement and control of bed density.The results of study show that the medium dynamic equilibrium and the quality index of products may be kept by adjusting the split-flow rate. The Ep values is 0.038～0.06.

关 键 词：空气重介 流化床 介质 数学模型 选煤 

分 类 号：TD94[矿业工程—选矿]