Rare Earth Roll

The Bunting Rare Earth Roll Magnetic Separator removes weakly magnetic particles from dry, free-flowing material. A neodymium magnetic head pulley produces a high-intensity field that attracts susceptible particles while nonmagnetic material follows its normal trajectory.

Originally developed for ceramics and glass, the separator is also used for mineral purification, e-waste and plastics recycling, and battery material processing. Adjustable roll speed, feed rate, and splitter position help operators tune separation for the material.

Common applications include:

• Mineral processing: feldspar, silica sand, and high-purity quartz purification
• Ceramics: fine iron removal from spray-dried material
• Recycling: cullet, granulated steel slag, plastics, and e-waste processing
• Battery materials: separation of anode and cathode fractions

High-intensity separation: Separates weakly magnetic particles from nonmagnetic dry material to improve product purity.

Adjustable operation: Variable roll speed, feed rate, and splitter position support tuning for different materials.

Particle size range: Handles material from 75 µm to 15 mm.

Controlled material flow: The roll configuration maintains a consistent separation zone and supports steady throughput.

Configuration options: Multiple sizes and arrangements are available for different process requirements.

• Dry material from 75 µm to 15 mm is fed in an even layer onto the conveyor belt.
• At the magnetic head pulley, magnetically susceptible particles are held to the roll while nonmagnetic material follows its normal trajectory.
• An adjustable splitter directs the magnetic and nonmagnetic fractions. Some applications can also produce a third middlings fraction containing weakly magnetic material.
• Operators can adjust belt speed, feed rate, and splitter position to control the separation result.