... dryer, coal slime dryer, bentonite dryer, ore concentrate dryer, wood chip dryer, cassava dryer, gypsum dryer, cow dung dryer, drying ... 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 ... clay, limestone, sand, quartz and other materials drying.The main structure of wood chip dryer :1. Main tube body, front roller circle ...