... drying coal, limestone, grain, sand, clay and other materials. Rotary Drying Machine main part of the drum dryer for a ... discharging end all use sealing device to avoid air leakage. Rotary Drying MachineWorking Principle:Composition: mainly consists of Revolved Body, ... gearing, supporting device and seals ring and other parts. Rotary Drying Machine Feature:1.The raising material plate with reasonable ...