浮选细精煤压滤脱水非均相分离动力学特性  

Dynamics of heterogeneous separation on fine clean coal dewatering by filter press

作　　者：巩冠群[1,2] 谢广元[1] 张英杰[1] 沙杰[1] 刘均章[1] 张秀峰[1] 陈宣辰[1] 董玉蛟[1] 

机构地区：[1]中国矿业大学化工学院,江苏徐州221116 [2]中国矿业大学应用技术学院,江苏徐州221008

出　　处：《中国矿业大学学报》2011年第3期464-469,共6页Journal of China University of Mining & Technology

基　　金：高等学校博士学科点专项科研基金项目(200802900503);中国矿业大学科学基金项目(2008A027)

摘　　要：基于脱水理论及非均相分离特点分析,研究了永城无烟煤浮选细精煤脱水非均相分离过程,提出了细精煤脱水理论模型和动力学简化方程.结果表明:浮选细精煤压滤脱水具备非均相分离流体动力学作用特点,脱水速度是操作推动力、过滤介质、滤饼特性、煤浆属性及有效压密面积系数的函数,压滤过程分为过滤及压榨脱水,给出了永城无烟煤浮选细精煤过滤方程,滤饼压缩性指数s值为0.855 9,物料特性常数k为0.237 1.Based on the dewatering theory and analysis of heterogeneous separation of fine clean coal dewatering,the heterogeneous separation process on fine clean coal dewatering of Yongcheng anthracite was investigated.A theoretical model on fine coal dewatering and its heterogeneous separation dynamic equations were proposed.The results show that the pressure filtration of flotation fine clean coal has the characteristic of heterogeneous separation of fluid dynamics.Fine coal dewatering rate is the function of driving force of operation,filter media,filter cake properties,coal slurry property and effective area coefficient of compaction.Pressure filtration process is comprised of filtration and pressure dewatering.The dewatering dynamic equation of flotation fine clean coal of Yongcheng anthracite was proposed.The compressibility index of cake s is 0.855 9,the material properties constant k is 0.237 1.

关 键 词：细精煤 脱水 非均相分离 动力学 

分 类 号：TD94[矿业工程—选矿]