简述了精煤中软杂质清除的必要性，介绍了除杂系统的工艺流程以及主要机械除杂设备的工作原理，试验证明了该系统除杂效果较好。 The necessity of removing the soft impurities in the clean coal is briefly introduced. The process flow of the impurity removal system and the working principle of the main mechanical impurity removal equipment are introduced. The experiment proves that the system has good impurity removal effect.