... widely used in metallurgy, building, refractory,ect What is Rotary Kiln? Rotary kiln is composed of cylinder, gears, support device, ... or double. Control the rotating speed by buncher, DE machine and frequency variable motor. Be reliable, energy-saving, and ... material kiln, calcined petroleum coke rotary kiln to different materials. Application of Rotary Kiln: 1) Rotary kiln is the Thermal Equipment, ...