... Reliable working condition 4. Long service life. Rotary Kiln:Rotary Kiln is the rotary calcing kiln, which belongs to the building material ... and ferroalloy plant, and light roast dolomite.Product feature of Rotary kiln 1. Support device: advanced shaft structure, has ... driver. Control the revolution by YZD, DC motor and frequency variable motor. Be reliable , energy-saving, and efficient. 4. ...