Electromagnetic Drum Magnets

Electromagnetic drum magnets continuously remove large and angular ferrous metal from high-volume bulk material streams. Stationary electromagnetic coils create a deep, adjustable magnetic field inside a rotating non-magnetic manganese steel shell.

Two coil configurations are available:

• Frag Electro Drum (FED): Uses a main coil and auxiliary coil for continuous ferrous recovery.
• Slag Electro Drum (SED): Uses multiple symmetrical coils to hold ferrous material against the drum for longer, increasing separation efficiency.

Available in custom sizes and configurations, electromagnetic drum magnets can be supplied for top-feed or bottom-feed systems. Bunting can confirm the appropriate drum size, coil design, feed arrangement, wear protection, and magnetic arc for each installation.

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Deep, Adjustable Magnetic Field: Powered coils capture large and angular ferrous metal from heavy material burdens.

High-Volume Processing: Designed for continuous operation in demanding industrial material streams.

Two Coil Configurations: FED supports continuous ferrous recovery, while SED increases holding time for higher separation efficiency.

Durable Shell Construction: A non-magnetic manganese steel shell with replaceable wear covers withstands abrasive service.

Adjustable Magnetic Arc: Manual arc adjustment changes the pickup and discharge points to improve recovery quality.

Application-Specific Design: Drum diameter, width, coil layout, feed arrangement, and wear protection can be configured for the process.

Electromagnetic drum magnets are available in two feeding configurations:

• Top Feed: Material enters above the drum. Ferrous metal is attracted to the rotating shell and discharged beneath the drum.
• Bottom Feed: Material passes beneath the drum. Ferrous metal is lifted by the shell and discharged over the top.

Bunting can recommend the appropriate arrangement based on material flow, burden depth, and discharge requirements.

• Magnet Type: Stationary electromagnetic coils inside a rotating drum
• Shell Material: Non-magnetic manganese steel, typically 8 to 10 mm thick, with replaceable wear covers as standard
• Maximum Drum Diameter: Up to 1,800 mm (72 in.)
• Maximum Drum Width: Up to 3,000 mm (120 in.)
• FED Coil Design: One main coil with an auxiliary coil
• SED Coil Design: Two to four symmetrical coils, depending on drum width
• Coil Winding: Anodized aluminum foil or Nomex-covered aluminum wire
• Cooling System: Ducted coils for heat dissipation
• Magnetic Arc: Manually adjustable to refine pickup and discharge points
• Feed Arrangements: Top feed or bottom feed
• Customization: Custom drum sizes and configurations are available for specific process requirements