What are suspended magnetic separators
Jun 26, 2025
How Suspended Magnetic Separators Work
Installation: Mounted overhead across conveyors (parallel to the belt).
Magnet Assembly: Contains high-intensity NdFeB or electromagnets (up to 15,000+ Gauss).
Capture Mechanism:
Tramp metal (bolts, rods, tool fragments) is lifted vertically by magnetic force as the belt passes underneath.
Captured metal clings to the magnet face or moves to a self-cleaning belt.
Cleaning:
Manual: Operators shut down and remove debris (rare).
Self-Cleaning: A crossbelt or vibrator discharges metal sideways off the magnet (industry standard).
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Typical configuration: Self-cleaning magnet with discharge chute for tramp metal.
Technical Specifications & Types
| Feature | Permanent Magnet (NdFeB/SmCo) | Electromagnet |
|---|---|---|
| Field Strength | ≤12,000 Gauss (surface) | ≤18,000 Gauss (adjustable) |
| Power Required | None | Continuous electricity |
| Operating Cost | $0 | High (cooling systems + energy) |
| Best For | Most recycling/mining apps | Giant scrap yards, deep-bedded coal/iron ore |
| MCI Advantage | SmCo magnets for high-temp environments (≤350°C) | – |
Key Applications (Where They Shine)
Scrap Metal Recycling: Remove rebar/auto fragments before shredding.
Mining: Stop drill bits or crusher teeth from damaging mills.
Waste Processing: Capture metal from municipal solid waste.
Wood/Pulp Mills: Extract tramp metal that causes fires.
Aggregate Plants: Protect conveyor belts from ripping.
Cost-Saving Impact: Prevents 50k–500k+ in downstream equipment repairs per incident.
Why Choose MCI Magnets for Suspended Separators?
As a supplier to OEMs, our SmCo and NdFeB magnets enable:
✅ Deeper Reach: Pull steel from 500mm+ material depths.
✅ Zero Magnetic Decay: <0.1% annual flux loss (SmCo).
✅ Harsh-Environment Kits: Corrosion-proof housings for mining/washdown.
✅ High-Temp Stability: SmCo magnets work at ≤350°C without derating.
Case Example: SmCo-equipped separators at a copper mine caught 1.2 tons/month of grinding ball fragments – preventing $220k/hour downtime.
Suspended vs. Other Magnetic Separators
| Type | Installation | Target Contaminant | Best Depth |
|---|---|---|---|
| Suspended Magnet | Over conveyor | Large tramp metal | Up to 900mm |
| Magnetic Pulley | Head of conveyor | Medium tramp metal | ≤150mm |
| Magnetic Grid | In chute/hopper | Fine ferrous | ≤50mm |
| Magnetic Drum | Standalone unit | Slurries/powders | NA |
Ready to Upgrade Your Suspended Separator Magnets?
→ OEMs: Custom NdFeB/SmCo arrays for deeper reach & 15% lower weight.
→ End-Users: Retrofit existing magnets with zero loss SmCo for 10+ year service.
[Get Suspended Separator Magnet Specs] • [Ask About Retrofit Kits]
MCI: Engineered magnetic protection for heavy industry.
