In coal preparation plants, magnetic wet drum separators are used to recover for re-use, fine magnetite used in the sink/float heavy media process. Similar drums are also used for iron ore beneficiation.
Slurry containing the magnetic medium is passed under a revolving stainless steel shell inside which a stationary multi-pole magnet element is housed. As the slurry moves beneath the revolving drum shell magnetic particles are drawn to the drum surface and transported to a discharge point where the magnetic field decreases.
Drum styles, diameters and rotation direction vary according to specific duties. Serpent and Dove® Pty Ltd is a company with many year’s experience with magnetic separation technology.