... is specially designed according to the characteristics of oil plam fiber, light, and with low temperature. Bailing rotary drum dryer ... for drying slag, limestone, coal powder, clay, sawdust, oil palm fiber, coconut fiber, grass, river stone, poultry dung, ores, rock sand and ... collector, furnace and etc. 3. heating source: coal, coal gas, natural gas, LPG gas, wood, and etc. 4. Mode of flow: direct ...