... .stable operation and good performance 3.widely used in metallurgy, building, refractory,ect What is Rotary Kiln? Rotary ... , and it can be divided into cement kiln, metallurgy chemical kiln and active lime kiln, porcelain kiln according, ... also used in various industries, such as cement, nonferrous metallurgy, ferrous metallurgy, chemistry, building, refractory material, environmental protection, etc. ...