中梁山煤摩擦电选可选性研究  

Research on tribo-electrostatic coal preparation ability of Zhongliangshan coal

作　　者：高孟华[1] 章新喜[2] 陈清如[2] 

机构地区：[1]华东理工大学化学工程联合国家重点实验室,上海200237 [2]中国矿业大学化工学院,江苏徐州221008

出　　处：《煤炭科学技术》2007年第8期68-71,共4页Coal Science and Technology

基　　金：国家高技术研究发展计划(863计划)资助项目(2002AA529120);国家重大基础研究发展规划(973计划)资助项目(G1999022205-03)

摘　　要：通过测定中梁山煤的介电常数和与不锈钢间的接触电势差,研究了该煤样的摩擦电选可选性。浮沉试验和X射线衍射分析显示,中梁山煤中矿物质的含量随着密度的增大而增加,特别是介电常数较高的高岭石和黄铁矿。随着各密度级产品的介电常数的增大,导电性增强,与不锈钢摩擦后的带电量趋于减少。各密度级产品与不锈钢之间接触电势差的不同,决定了其与不锈钢摩擦后的带电极性,摩擦带电试验进行了验证,试验与理论预测趋势相一致,说明该煤样的摩擦电选可选性比较好。With the measurement of the contact potential difference between the dielectric constant of Zhongliangshan coal and the stain- less-steel,the paper studied the friction tribo-electrostatic preparation ability of the coal.The floatation-sink test and XRD analysis showed that the mineral content of Chongliangshan coal was increased as the density increased,especially kaolinite and pyrite with high dielectric constant.And the dielectric constant and electric ability of the each density products would be increa...

关 键 词：摩擦电选 接触电势差 介电常数 中梁山煤 

分 类 号：TD94[矿业工程—选矿]