Rare Earth Magnetic Separator for Coolant Filtration

Rare Earth Magnetic Coolant Filter

Rare Earth Magnetic Drum Separator — High-Efficiency Ferrous Separation for Coolant and Process Lines

Maximise product purity, protect equipment, and cut operating costs with a rare earth magnetic drum separator. Using high-energy Neodymium (NdFeB) magnets, these separators deliver superior capture of fine and weakly magnetic particles compared to ceramic-magnet drums—ideal for grinding coolants, mineral processing, food-grade utilities (non-product contact), and metal recycling lines.

MODEL R.E.M.F

The magnetic drum is made out of powerful rare earth magnets which produce magnetic field 75mm above the drum. Very fine particles will be arrested without a slip. The magnetic material will not loose its strength even after number of years of use.

These filters are available in 100 to 1200 liters per minute filtering capacity. These filters can be coupled with hydrocyclone coolant filters, Paper band filters, Cartridge filters, etc. And are also manufactured as per customers requirement.

What Is a Rare Earth Magnetic Drum Separator?

A rare earth magnetic drum separator is a rotating drum with a powerful internal magnet array made from rare earth materials. As slurry, coolant, or dry material passes over the drum, magnetic particles are attracted and held to the shell, while non‑magnetic material flows past. A scraper or splitter discharges the captured fraction separately.

Why Choose Rare Earth (NdFeB) Magnets?

Stronger magnetic field: Up to 5–10x surface Gauss vs ceramic ferrite magnets, improving pickup of fine and weakly magnetic particles.
Higher capture efficiency: Excellent on sub‑10 µm iron fines, oxide scale, and stainless carryover (400 series, work-hardened 300 series).
Compact and energy‑efficient: Greater performance in smaller footprints; continuous, low-power operation.
Better product quality: Reduced contamination boosts downstream yield, surface finish, and equipment life.

How It Works

Feed enters the drum zone in a thin, even layer.
High-gradient rare earth magnets create a strong radial field that holds ferrous and weakly magnetic particles to the shell.
As the drum rotates out of the magnetic field, a scraper or adjustable splitter removes the magnetic fraction.
Cleaned coolant/material is discharged separately for reuse or further processing.

Key Benefits

Higher purity and clarity: Superior removal of fines in coolants, slurries, and dry feeds.
Longer tool and pump life: Less abrasive recirculation and nozzle/pump wear.
Lower consumable spend: Offloads paper media and bag filters; less downtime and maintenance.
Fast ROI: Savings from longer coolant life, better yield, and reduced rework/scrap.
Sustainable operations: Captured ferrous fines are recyclable; lower waste media and disposal.

Applications

Coolant filtration: Grinding, honing, and machining of steels and cast iron; pre‑stage to band/bag filters.
Mineral processing: Upgrading magnetite, removing iron contamination from non‑metallic minerals (quartz, feldspar, kaolin).
Recycling and scrap: Cleaning shredder residue, wire chopping lines, and WEEE streams.
Ceramics and glass: Removing iron spots to improve whiteness and clarity.
Food, chemical, and pharma utilities (non‑product contact): Utility water and CIP return lines to protect equipment.
Quench oil/polymer quench tanks: Removing scale and fines to stabilise heat transfer.

Wet vs Dry Drum Designs

Wet drum separators: For slurries and coolants; provide controlled feed depth, overflow weirs, and sealed bearings.
Dry drum separators: For powders and granular materials; include vibratory feeders and adjustable splitters.
Single-, double-, or triple-drum configurations increase throughput or recovery at finer cuts.

Selection Guide

Material/medium: Coolant, slurry solids %, or dry bulk characteristics.
Particle size and load: Grinding haze vs mixed chips; set target recovery and micron cut.
Ferrous type: Carbon steel, cast iron, 400‑series stainless, scale/oxides; required field strength/coverage.
Flow rate/capacity: L/min for wet; t/h or kg/h for dry; size drum with 20–30% headroom.
Drum spec: Diameter/width, magnetic arc coverage (typically 180–210°), and shell material (SS304/SS316).
Integration: Upstream screens or cyclones, downstream media filters, tramp oil control (wet).
Environment: Temperature, pH, corrosion resistance, IP rating, and washdown needs.
Compliance: Food/chemical utilities may require SS construction and FDA/EC compliant elastomers (utility side).

Installation Best Practices

Feed conditioning: Use a weir or vibratory feeder to create a thin, even layer over the drum.
Dwell time: Tune drum speed for maximum capture without overflow; start at OEM-recommended RPM and optimise.
Splitter setup: Adjust splitter knife for clean separation of magnetic/non‑magnetic fractions.
Drain-back: Provide sludge trays with drain to recover coolant and keep the area clean.
Access: Plan clearances for scraper adjustment, bearing service, and shell cleaning.

Maintenance Tips

Inspect scraper/wiper wear and shell surface; replace before scoring occurs.
Check bearing seals and alignment for wet service; follow lubrication intervals.
Verify magnet integrity and coverage; rare earth arrays are permanent but should be inspected periodically.
Monitor clarity/purity and differential level to detect overload or bypass paths.

Why Our Rare Earth Drum Separators

High-energy NdFeB arrays with optimized magnetic arc for maximum capture.
Heavy-duty, corrosion‑resistant construction (SS304/316 wet ends) for long life.
Application engineering: Sizing and trials for your coolant, slurry, or dry product.
Modular options: Single to triple drum, magnetic bars pre‑stage, hydrocyclone/paper-bed integration.
Pan‑India delivery, commissioning, AMCs, and spares with responsive support.
Proven ROI through reduced consumables, improved product quality, and higher uptime.

Contact

Interested in learning more or need a custom solution?

Mag Tools

B-465, Industrial Estate 2nd Gate, Gokul Road, Hubli, 580030 (Karnataka )

Phone Number

Phone: +91-836-2335990
Fax : +91-836-2332297
Cell : +91-93434-03619
Cell 2 :+91-9880-666722

Email Address

Mr. A.T. Pawar: atpawar@magtoolsindia.com
Mr.Tushar Pawar: tushar@magtoolsindia.com

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