Suitable for cast ingot, steel ball, pig iron, machine chip, for various kinds of steel scraps, return scraps, cropping, baling scraps and etc in foundry factories and for iron powder in coal washery. During slag disposal process, it can remove large size of iron at initial step. Outlet box has two chambers, an extra- thick fender and an anti-twist setting. There are three excitation options: rated voltage DC220V; strong excitation; over excitation.