... designed according to the characteristics of oil plam fiber, light, and with low temperature. Bailing rotary ... limestone, coal powder, clay, sawdust, oil palm fiber, coconut fiber, grass, river stone, poultry dung, ores, rock ... etc. 3. heating source: coal, coal gas, natural gas, LPG gas, wood, and etc. 4. Mode ... materials would be dried.Photos of oil palm fiber dryer at our factory: innner structure We ...