... widely used in metallurgy, building, refractory,ect What is Rotary Kiln?Rotary kiln is composed of cylinder, gears, support ... 2. Catch wheel: including two kinds mechanical wheel and hydraulic pressure 3. Gears: single or double. Control the ... used in various industries, such as cement, nonferrous metallurgy, ferrous metallurgy, chemistry, building, refractory material, environmental protection, etc ...