... coal slime dryer, bentonite dryer, ore concentrate dryer, wood chip dryer, cassava dryer, gypsum dryer, cow dung ... waste, and clay stone. They are widely used in building materials, metallurgy, and chemical industry.2. what ... driving device, supporting device and sealing ring.3. Can I use the coal or gas as the heating ... power to heat the dryer machine.4. How the rotary dryer to work?The raw material ...