Master Mag Slag Drums are used for heavy-duty continuous separation of ferrous from non-ferrous material. There is a 180 degrees stationary magnet, with two heavy-duty 8mm thick manganese covers that revolve around it, with the outer one being replaceable. The Slag Drum has a very powerful  magnet system capable of extracting ferrous material, which may be entrapped within non-metallic materials.

The Slag drum differs from fragmentiser drums, having a radial pole rather than an alternate pole. This is to ensure that extracted ferrous materials are firmly held to the drum face through its entire 180 degree cycle, allowing for the highest levels of separation.