... single or double. Control the rotating speed by buncher, DE machine and frequency variable motor. Be reliable, energy-saving, and ... and flexible type. Working Principle of Rotary Kiln: 1) With a certain slope to the level, the whole kiln body ... 2) It is also used in various industries, such as cement, nonferrous metallurgy, ferrous metallurgy, chemistry, building, refractory material, environmental ...