... . Kiln head hood: including stationary type and flexible type. Working Principle of Rotary Kiln: 1) With a certain slope to the ... building material equipment, and it can be divided into cement kiln, metallurgy chemical kiln and active lime kiln, porcelain ... 2) It is also used in various industries, such as cement, nonferrous metallurgy, ferrous metallurgy, chemistry, building, refractory material, ...