Design of the scheme for washing the raw coal from different seams at Shigetai coal preparation plant

The problems faced by Shigatai Plant are the low proportion of the coarse coal treated and insufficiency of the capacity of the washing system as a whole. Following an analysis of the current operational status of the plant,the paper goes to dwell on the necessity of washing of the raw coal from different seams. Based on the comparison of the economic benefits obtained using different washing processes,a rational and feasible processing scheme is finally selected. The application of the selected coal cleaning system makes it possible for the raw coal to be treated in a flexible manner,and make the most of the existing treating system. This provides a reference for other domestic plants treating similar raw coal to make practically feasible design and renovation of washing systems.