... drying mineral ore, sand, coal,bagasse, rice husk and saw dust 2.reasonable structure, low cost High Capacity Rotary Drum ... 've designed various rotary dryers for drying slag, limestone, coal powder, clay, sawdust, oil palm fiber, grass, river stone, ... feeding device, discharging device, gear, gearbox, electric motor, cyclone dust collector, furnace and etc. 3. Rotary Dryer Drum drier heating ...