Abstract: To solve the problem of wasting of resources in Guanzigou coal preparation plant,based on the analyzing the issue of coal slime blending,made dewatering on fine slime using the LWZ1400×2000 screen bowl centrifuge,and mixed the dewatered slime into the blended coal for sell.The operation practice show that after dewatering with LWZ2400×2000 screen bowl centrifuge the part of slime can be soled with blended coal so that increased the economic benefit of the coal preparation plant.