Coal washing plants are mainly used to remove impurities from raw coal or to classify high-quality coal and low-quality coal. Before clean coal used, it must first be crushed, graded, washed, dewatered and fines recovered to meet the standards for coking. Coal washing utilizes different physical and physical-chemical properties to remove impurities mixed in raw coal by mechanical means in the coal washing plants and divides it into products with different quality and specifications to meet the needs of different users.

Coal slime generally refers to semi-solids formed by pulverized coal containing water. Due to coal slurry with high moisture content, high viscosity, high water, and low calorific value such many other adverse conditions, it is difficult to realize industrial use, based on the coal slime industry market and the characteristics of coal slurry, through many times technical research and practice,Jiutian company developed a new generation of coal slime drying system meticulously, drying product moisture is less than 15%, the calorific value of coal can achieve 2800-4200 kcal/kg,it is a good fuel of coal boiler. This set of equipment technology is mature, stable running, convenient operation and maintenance.