High Intensity Dry Roll Magnetic Separator

Rare-earth roll magnetic separator designed for high-efficiency separation of weakly magnetic (paramagnetic) minerals from dry process streams.
Used where high purity of the final product is required.

Separation Variables

• Magnetic field strength
• Feed rate
• Separator surface speed
• Particle mass and size
• Centrifugal force vs magnetic force balance

Additional Information

• Double-stage separation often required
• First stage removes ~60–75% of magnetic material
• Efficiency decreases if feed rate is too high
• Fine particles require lower burden depth
• Locked particles may affect purity

Working Principle

• Feed material is conveyed by a thin belt over a magnetic roll acting as a head pulley.
• Non-magnetic particles follow a natural trajectory and are discharged.
• Weakly magnetic particles are attracted to the roll and deflected separately.
• A splitter separates magnetic and non-magnetic streams.

Glass industry raw materials:

• Silica
• Quartzite
• Feldspar
• Fluorspar
• High purity quartz processing

Ceramic raw materials:

• Alumina
• Kyanite
• Mullite
• Zircon
• Industrial mineral upgrading

Magnetic field strength :

• 21,000 gauss

Roll diameter :

• Typically 3–4 inches (up to 12 inches possible)

Roll width :

• Up to 60 inches

Belt thickness :

• 3 to 20 mils

Capacity :

• 100 kg/hr per cm of roll width
• Up to 10 TPH (for 1.5 m width separator)

Particle size range :

• 20 × 200 mesh

Iron reduction :

• Down to 0.02% – 0.05%

• High magnetic field intensity
• Suitable for dry processing
• High purity product output
• Efficient separation of weakly magnetic minerals
• Thin belt for precise material handling
• Capable of multi-stage separation
• High throughput capacity