Abstract:

With the present phenomenon of low ash content of great amount of coal gangue and flotation tailings discharged in the process of coal washing , the necessity of tailings recleaning was analized and typical process of tailings recleaning with liquid-solid fluidized bed in WuHai area was introduced .The separation effect of the craft in Zhao Shou Cong coal preparation plant was discussed and the results show that liquid-solid fluidized bed separation could improve the calorific value of coal gangue signally and get qualified clean coal from flotation tailings , which not only has remarkable economic benefit and environmental benefit but provides a reference for tailings recleaning research .

Key words: tailings recleaning, liquid-solid fluidized bed, crush, probable deviation E