Abstract：Aiming at the problems of small raw coal processing capacity, high ash fine slime circulation in slime water, small processing capacity of high frequency screen, unreasonable layout of maintenance space and serious aging of key equipment in Xingxian Zhongtou Guoneng Coal Washing Plant, in order to further increase the processing capacity, improve the recovery rate, reduce the accident time and improve the comprehensive efficiency of the coal washing plant, the methods of breaking the closed circulation of slime, increasing the pretreatment of slime water by slime classification cyclone and replacing the key quality equipment are adopted to transform the process equipment, which improves the comprehensive economic benefits of the coal washing plant.
