方庄二矿选煤厂降低块煤限下率的优化改造  

Process renovation of reducing the rate of particle size small than lower size limit of lump coal in Fangzhuang No.2 colliery coal preparation plant

作　　者：毛运华[1] 梁兴卫[1] 

机构地区：[1]河南煤化集团焦煤公司方庄二矿选煤厂,河南焦作454361

出　　处：《选煤技术》2012年第3期38-40,共3页Coal Preparation Technology

摘　　要：针对方庄二矿选煤厂块煤限下率超标的问题进行了研究,确定通过扩大精煤弧形筛筛缝尺寸的措施来提高筛分效率、降低限下率,生产结果表明,扩大精煤弧形筛筛缝尺寸的措施是可行的。Research have been done to solve the problem of the rate of particle size small than the lower size of lump coal exceed limit in Fangzhuang No. 2 colliery coal preparation plant, determined by expan- ding the screen aperture of the sieve bend of cleane coal to improve the efficiency of screening and reduce undersize fraction. Production results show it is feasible.

关 键 词：块煤 限下率 弧形筛 水力离心分级 筛分效率 

分 类 号：TD94[矿业工程—选矿]