新阳选煤厂二期煤泥水系统技术改造

分析了新阳选煤厂二期煤泥水系统存在的问题,并针对浮选入料跑粗,对分级浓缩旋流器组流程进行技术改造。实践证明,通过煤泥水系统的改造,浮选入料+1 mm质量分数由原来的10%以上降至1%左右;2325溢流+0.5 mm质量分数小于5%,底流-0.25 mm质量分数小于20%。2330分级浓缩旋流器底流灰分9%～11%,有效改善了原有工艺的不足,解决了浮选入料跑粗严重的问题。

Technical reform of the second-stage slime water processing system in Xinyang coal preparation plant

Analyze the problems existed in second-stage slime water processing system in Xinyang coal preparation plant. Transform classification concentration hydrocyclone units process, in order to eliminate coarse slime leakage. The results show that,the mass fraction of particles above 1 mm is reduced from more than 10 percent to about 1 percent in pulp, particles above 0. 5 mm in overflow from 2325 classification concentration hydrocyclone is controlled below 5 percent, particles below 0. 25 mm in underflow is decreased to less than 20 percent, the ash content in underflow from 2330 classification concentration hydrocyclone ranges from 9 percent to 11 percent. The transformation effectively makes up the shortcomings in original process, solves the serious problems of coarse slime leakage.