Pulverizing fans are intended for grinding of brown coal and lignite to powdered condition with simultaneous drying and pulverized coal-gas mixture transportation in boilers coal pulverization systems. Pulverizing fan is manufactured with counter-clockwise or clockwise rotation of rotor.

Pulverizing fan is a unit which is simultaneously functioning as a grinding device and a fan conveying the finished pulverized coal by air flow. Hot gases drawn off from furnace and coal from which the surface moisture is removed (this moisture decreases drying agent temperature at the mill inlet) enter the upper part of gas intake mine simultaneously. Coal grinding is performed by quickly rotating rotor by means of impact and attrition effect.

Grinding coal is removed from grinding area by the drying agent to separator where the segregation of large-sized coal fractions from air-and-coal mixture and their return for finish grinding occur. The adjustment of finished pulverized coal fineness is provided by separator design. Finished pulverized coal is directed by air flow along the pulverized-coal ducts to boiler burners. Change of the pulverizing fan ventilation capacity is carried out by regulating cut-off gate mounted at the separator outlet. Owing to structural features the pulverizing fan is easy and reliable in operation.