mtSpirals
The world’s most proven spiral technology.
mtRED
Dry magnetic separators that provide the sharpest separation.
The flowsheet may be right but your drum may be the constraint.
More of what you want.
The Rare Earth Drum Magnetic Separator (mtRED - Ex Reading) recovers weakly magnetic and fine particles that conventional drums miss. It delivers cleaner separation between magnetic, middlings and non-magnetic products without redesigning your plant.
Advanced magnetic array
The magnetic array is engineered to balance field intensity with a strong field gradient. Multiple high-gradient zones create repeated particle interactions and more cleaning opportunities during each revolution. Field intensity exceeds 0.7 Tesla at the drum surface, supporting selective separation rather than simply delivering a higher gauss number.
- Feed Controled
- Rotation applies centrifugal force
- Field captures the magnetics
- Pulsing shakes non-magnetics free
- Product Streams Divide
Technical Features
Your magnetic separation may appear stable while valuable material continues to report to tails or middlings accumulate in the circuit. The limitation may not be the flowsheet, but how effectively particles interact with the magnetic field under real operating conditions.
The mtRED gives you the pulse field gradients, stable particle trajectory and operating range needed to sharpen the separation without adding unnecessary stages.
Relevant when
- Recovery targets are missed despite stable operation
- Valuable material is still reporting to tails
- Middlings are building up in the circuit
- Fine or weakly magnetic particles are involved
- High wear on metal drums costs
The Engineering Principle
Field strength creates the conditions for separation. Field gradient determines how strongly a moving particle responds.
Centrifugal, gravitational and motion-induced forces are largely set by the operating conditions. Magnetic force (driven by the field gradient) is the component that can be shaped through magnetic-array and drum design.
New mtRED Drum eliminates mineral flick for steady, consistent mineral separation.
The proprietary non-conductive drum shell eliminates eddy currents at the drum skin. This removes the associated heat generation, annoying drag and operating instability.
With drastically reduced mineral flick and a stable discharge trajectory, particles report more consistently to the intended product stream. The wider usable speed range also gives the Process Engineer more freedom to optimise the cut point.
- Cleaner product streams Eliminate mineral flick and reduce cross-contamination between magnetic, middlings and non-magnetic fractions.
- Freedom to optimise Use a wider range of drum speeds without conventional thermal or stability constraints.
- Reduced recirculation Sharpen the cut point, reduce middlings build-up and avoid unnecessary retreat stages.
- Stable, repeatable performance Maintain a predictable split line through stable drum geometry and particle trajectories.
Configurations
| Parameter | 400 mm drum | 600 mm drum |
|---|---|---|
| Drum length | 1,000 / 1,500 mm | 1,000 / 1,500 mm |
| Separation stages | 1, 2 or 3 | 1, 2 or 3 |
| Nett weight | 750 – 2,600 kg | 950 – 3,500 kg |
| Overall height (A) | 1,460 – 3,060 mm | 1,680 – 3,680 mm |
| Underfloor clearance (B) | 500 / 700 mm | 600 / 750 mm |
| Width (C) | 1,100 mm | 1,350 mm |
| Overall length (D) | 1,770 / 2,300 mm | 1,920 / 2,450 mm |
| Power consumption | 1.5 / 2.6 / 3.7 kW | 2.6 / 4.8 / 7.0 kW |
| Dust extraction | 150 m³/h | 150 m³/h |
Right Size For You?
Mineral Technologies offers modular mtRED across a wide range of capacities and applications. Reach out and inquire in cases where you're application specs are different.
Downloads
Find the right equipment
Made for modern mineral processing plants.
