Self-discharging Electromagnetic Iron Separator

At the center of the unit is the excitation magnet assembly. This part generates the magnetic field that pulls ferrous contaminants out of the material flow. The coil is wound with high-temperature insulated copper wire and then fully encapsulated in epoxy resin under vacuum conditions. This sealing structure helps prevent dust, moisture, and conductive particles from entering the coil, which is especially important in mining, recycling, cement, and coal handling environments.

Beneath or around the magnetic assembly runs the automatic iron discharge mechanism. A heavy-duty endless belt moves across the magnet surface, carrying captured iron toward the side of the unit. The belt is guided by idlers and driven by a geared motor, which provides enough torque to move the belt even when a considerable amount of iron has accumulated on its surface. This continuous movement means the separator does not rely on manual cleaning during normal operation.

The frame and suspension assembly form the main supporting structure of the equipment. Usually fabricated from Q235B carbon steel, the frame is welded, inspected, and then treated with industrial paint to resist corrosion and abrasion. Lifting lugs are included for overhead installation, allowing the unit to be suspended above an existing belt conveyor without major structural changes to the conveyor itself.

An associated electrical control and rectifier cabinet is also part of the system. Since the electromagnetic coil requires direct current excitation, the control cabinet converts the alternating current from the plant power supply into suitable DC power. It also provides switching, protection, and control functions, and in many cases can be connected to the plant's existing automation system.