... such as magnesia, bauxite, dolomite, iron and so on ) through forcing booster, preload screw precision machining, made of high density ball ... powdered coke, iron oxide skin and dust ash, slime, powder metallurgy, sea Kam iron carbon products, such as material effect ... part of roll, roll blank is divided into: integral forging and casting, the casting of small density, structure of rough, but more ...