丁集选煤厂煤泥水系统工艺优化改造

Process Optimization of Coal Water System in Dingji Coal Processing Plant

煤泥水的处理涉及到选煤厂洗选工艺的各环节,是一项系统复杂的工程。各选煤厂结合入洗原煤的煤质,采用不同的洗选工艺流程与管理方法,在处理煤泥水时所采用的方法也存在差异。丁集选煤厂因原煤泥化严重,次生煤泥量大,造成煤泥水处理系统运行负荷大,煤泥水浓缩、絮凝和脱水处理难度增大。通过对洗水闭路循环管路、分级旋流器和PAM药剂添加,对原煤泥水处理系统进行工艺优化改造,有效提升精煤的回收率,解决浮选效果差、能耗高的问题。

The treatment of coal sludge water involves all aspects of the washing process in coal processing plants,which is a systematic and complex project.Each coal processing plant adopts different washing processes and management methods according to the quality of the raw coal to be washed,so there are also differences methods to treat coal sludge water.In Dingji coal processing plant,due to the serious mudification of raw coal and the large amount of secondary coal sludge,the coal sludge water treatment system had a large operating load,and the coal sludge water concentration,flocculation and dewatering treatment were more difficult.The process optimization modification of the raw coal sludge water treatment system was carried out to effectively improve the recovery rate of fine coal and solve the problems of poor flotation effect and high energy consumption through the process optimization of closed washing water circulation pipeline,classifying cyclone and PAM chemical addition.