... 3, wear-resisting plates 4, high quality parts Application of rotary kilns :Rotary dryer is widely applied in mining, ... clay, limestone, lignite and other materials. Working principle of rotary kilns :Rotary Dryer is made up of cylinder, lifting plate, transmission, supporting devices ... air, and aimed dry material is achieved. Different types of rotary kilns:1. A cement rotary kiln is primarily used ...