... consumption, smooth rotation, easy operation, convenient transportation and so on. 2. Rotary Drum Dryer main parts: cylinder, lifters, driving device, ... gear, gearbox, electric motor, cyclone dust collector, furnace and etc. 3. Rotary Dryer Drum drier heating source: coal, coal gas, natural ... gas, LPG gas, wood, and etc. 4. Rotary Dryer Drum Drier Mode of flow: direct flow or counter ...