Specification: F4.6× ( 10+ 3.5) m ( Grinding chamber + Drying chamber ) , Grinding method: closed circuit middle discharging raw mill, Production capacity: 190t/ h ( Fineness of finished product: 12-14% residue from 80µ m screen) , Feeding material: Fineness: = 25mm ( 85% passed ) , Moisture: = 5% , Feeding air temperature: 350? , Discharging material moisture: = 1% , Rotary speed: 15.1 r/ min, charging capacity of grinding medium: 180t ( max: 189t )