Driving method: Center driving, Production method: Closed Circuit, Production capacity: 75-80 t/ h ( Feeding size of clinker: = 25mm, synthetical moisture: = 0.5% , Feeding temperature: = 50? ) , Wind speed in the mill: = 0.5 m/ s, Fineness of finished products: 300-350 m2/ kg.) , Rotary speed of mill: 16.3r/ min, Effective volume of mill: 143m3, Charging capacity of mill ball: 191t