... , iron oxide, carbon powder, charcoal powder, slag, gypsum, tailings, sewage sludge, kaolin, activated carbon, coke powder and other powder, powder, waste, waste residue, ... coke, iron oxide skin and dust ash, slime, powder metallurgy, sea Kam iron carbon products, such as material ... of the First.Second, level spiral feeder feed, applies a narrower rolls.Last,preload screw feeder. Dosing purpose is to ...