... , supporting device and sealing ring.3. Can I use the coal or gas as the heating source?Yea, you can use coal, gas, electricity, oil ... and wind power to heat the dryer machine.4. How the rotary dryer to work?The raw material plate is arranged conveniently to ... , constant feeding machine, dust collector cyclone. Draft fan and so on. The Rotary dryers has been optimized a lot , which possesses ...