高梯度磁选中单颗粒微粉煤的动力学分析  

Kinetic analysis of single-particle pulverized coal during high-gradient magnetic separation

作　　者：刘鹏[1] 焦红光[2] 

机构地区：[1]毕节职业技术学院,贵州毕节551700 [2]河南理工大学材料科学与工程学院

出　　处：《矿山机械》2012年第8期86-90,共5页Mining & Processing Equipment

基　　金：河南省高校科技创新人才基金资助项目(2009HASTIT020);河南省教育厅自然科学研究计划项目(2009A44002)

摘　　要：为了建立气固流态化磁选过程中颗粒群的相互作用模型,优化了高梯度磁选设备工作参数,在单颗粒微粉煤比磁化率一定的条件下,通过对高梯度磁选中单颗粒球形微粉煤的动力学分析,建立了气固流态化分选过程中的单颗粒煤粉运动的动态数学模型;进而探索出聚磁介质当量直径的临界模型,并分析了单颗粒微粉煤被捕集到聚磁介质上时相对气体流速的运动速度。To establish the model of granule group interaction during gas-solid fluidization magnetic separa- tion, the paper optimized the operation parameters of the high-gradient magnetic separation equipment. On thecondition of keeping the specific magnetic susceptibility constant, through kinetic analysis of the spherical sin- gle-particle pulverized coal during high-gradient magnetic separation, a dynamic mathematical model of single- particle pulverized coal during gas-solid fluidization magnetic separation was established. And then the critical model of the equivalent diameter of the magnetic medium was achieved. Finally the relative gas flow velocity of single-particle pulverized coal was analyzed when single-particle pulverized coal was trapped onto the mag- netic medium.

关 键 词：高梯度磁选 单颗粒微粉煤 动力学分析 数学模型 

分 类 号：TD457[矿业工程—矿山机电]