... industry, building material, metallurgy, chemical industry, cement industry, and etc.Zhengzhou Yufeng is a professional manufacture of rotary drum ... Dryer main parts: cylinder, lifters, driving device, supporting device and sealing ring, feeding device, discharging device, gear, gearbox, electric ... LPG gas, wood, and etc.4. Rotary Dryer Drum Drier Mode of flow: direct flow or counter flow. It is based ...