... . Such as: coal, coke, a variety of black powder non-ferrous metals, paper and iron oxide dust ash, sludge, Refractoriness and so on ... pressure with the ball powder, used - non-ferrous metals and black slag of the system quickly made the ball directly into ... this machine to complete. For example: gray dust, mud pools, oxide, steel, Tie Jing fen, aluminum ash, slag Si-Mn, and ...