· BALL MILL INLET CHUTE The purpose of the stationary inlet is to direct the materials (clinker, Gypsum, additives and material recirculated from the separator) and the required air flow is adjusted by means of the damper. The feed chute is lined with boltedon wear plates. The damper in the air intake is adjusted manually during the runningin of the mill. a. Ball charge b. Arm of gravity c ...