Permanent magnetic drum separators have 3 kinds including downstream type, counter flow type and semi- counter flow type according to the difference of base structure.
Downstream type permanent magnetic drum separator: slurry flows in the same direction with drum.
Counter flow type permanent magnetic drum separator: slurry flows over against drum, which create great conditions for cleaning of non magnetic ores. The non magnetic ores approach the clean surface of drum and the magnetic ores can be absorbed in the strongest magnetic field.
Semi-counter flow type permanent magnetic drum separator: slurry is fed into cavity from the bottom of drum, and the magnetic ores fall into concentrate tank after reaching a certain height, while the non magnetic ores will enter into tailings tank along with slurry in the opposite direction with drum.