... 3.widely used in metallurgy, building, refractory,ect What is Rotary Kiln? Rotary kiln is composed of cylinder, gears, support device, kiln ... the kiln body. 2) Besides main driving unit for driving system, it is also fitted with the auxiliary driving unit so as ... Thermal Equipment, heating materials, in cement industry for calcining clinker. 2) It is also used in various industries, such as cement, ...