Abstract: To solve the problem of low efficiency of hand picked refuse in Huafeng coal preparation plant,the XZQ-1620 H. M vessel use for modifying the original refuse discharge system,and described the structure,working principle,technical parameters and characteristics of separator. The operation practice shows that using XZQ-1620 H. M vessel separate 200 ~50 mm size fraction raw coal,can effectively eliminate the large size rock,reduce the ash content of lump coal,improved the economic benefit of coal preparation plant.