... ferrous metallurgy, such as iron, aluminium, copper, zinc, stannum, nickel, wolfram, chromium, etc., the rotary kiln can be used ... Simple structure, reliable performance;4. Easy operation.Working PrincipleThe rotary kiln can be divided into cement kiln, metallurgy chemical ... ferrous metallurgy, such as iron, aluminium, copper, zinc, stannum, nickel, wolfram, chromium, etc., the rotary kiln can be used ...