Product Details
Not every material flows cleanly enough for a grill or a filter. Powdery, moist, lumpy or abrasive products — and large debris that would choke or wear out a cartridge-based separator — need a different approach. The PML Magnetic Plate solves this by sitting directly in the material's path: mounted above a conveyor, below a drive pulley, or at a discharge point, in flat or curved form, pulling tramp iron and fine ferrous fines out as product passes by.
Where It's Used
CTC tea machinery, biscuit stacking lines, and general iron separation across food (tea, spices, coffee, cocoa, milk powder), tobacco, chemicals, fertilisers, pharmaceuticals, foundry sand, cattle feed, minerals and detergents. Multiple plates positioned along a line are also used to guide and separate ferromagnetic sheet and container stock — M.S. sheets and tin containers — preventing them from falling back onto the conveyor.
How It Works
The plate sits in the material's flow path, its magnetic field penetrating the passing product and holding tramp iron to the surface until it's cleaned off. High-strength plates (Strontium Ferrite or Rare Earth) reach up to 6 inches into the conveyed layer, so even thin material streams on fast belts get proper coverage. Threaded mounting holes make positioning straightforward, and hinged models swing open for quick manual cleaning.
Key Advantages
- No Power, No Maintenance
A purely passive permanent-magnet system — nothing to wire, nothing to service beyond periodic cleaning.
- Mount Above or Below
Works positioned over the material flow or underneath, depending on your line layout.
- Reaches Into the Product
High-strength versions pull ferrous fines from up to 6" into the material layer — not just off the surface.
- Swing-Open Cleaning
Hinged installation lets you clean the captured iron off in seconds, without removing the unit.
Construction
Two plate types cover most applications: a flat plate for straight chutes and conveyor sections, and a curved plate that follows the profile of a pulley or rounded discharge point. Both are built with threaded mounting holes for straightforward installation.
Standard Range
| High-Strength Magnetic Plate (NdFeB, 4,500 ± 500 Gauss, max. 80°C, attraction 3″–4″) | |||
|---|---|---|---|
| Model No. | Size (A×B×C mm) | Weight (kg approx.) | |
| HMP-10 | 100×100×31 | 2 | |
| HMP-15 | 150×150×31 | 4 | |
| HMP-20 | 200×200×31 | 7.5 | |
| HMP-25 | 250×250×31 | 12 | |
| HMP-30 | 300×300×31 | 16 | |
| HMP-35 | 350×350×36 | 26 | |
| HMP-40 | 400×400×36 | 35 | |
| HMP-45 | 450×450×36 | 41 | |
| HMP-50 | 500×500×36 | 50 | |
| Low-Strength Magnetic Plate (Ferrite, 1,200 ± 300 Gauss, max. 250°C, attraction 4″–5″) | |||
| LMP-10 | 100×100×46 | 3 | |
| LMP-20 | 200×200×46 | 9 | |
| LMP-30 | 300×300×46 | 19 | |
| LMP-40 | 400×400×51 | 38 | |
| LMP-50 | 500×500×51 | 58 | |
What We Need for a Custom Plate Quote
- Type of material being processed
- Flow rate
- Size and concentration of expected contamination
- Dimensions of the flow passage or conveyor
Frequently Asked Questions
Above the conveyor or below — which is right for me?
Above-mounted plates work well for general tramp iron removal from a flowing bed of material; below-mounted (under the drive pulley) is often used for fine fines close to the belt surface. Tell us your layout and we'll recommend the right position.
How is the plate cleaned?
Hinged installations swing open for quick manual cleaning of the captured iron — no tools or power involved.
Do you build curved plates?
Yes — both flat and curved profiles are available to match your chute or conveyor geometry.
Why Buy From PML
- 65+ years of magnetic separation engineering — Permanent Magnets Ltd has supplied iron-removal equipment across food, pharma, chemical and mineral processing industries for 65+ years.
- Made and tested in-house — every plate is manufactured and quality-checked at our own facilities to its stated Gauss rating.
- Wide strength range — from 1,200 Gauss ferrite to 4,500 Gauss NdFeB, matched to your contamination and budget.
- Magnetic calibration and audit services available to verify field strength over the life of the unit.
Need a custom size or mounting configuration? Enquire now and our engineering team will size the right plate for your line.