Product Details
Dry, free-flowing products — grain, sugar, flour, plastic pellets, powders — pick up iron contamination somewhere between the field and the finished pack, usually from the machinery that processes them. The PML Magnetic Grill traps that contamination in a single pass: a stainless steel frame (round, square or rectangular) fitted with magnetic rods, dropped straight into the product flow.
Every component is Stainless Steel 304/316, and the magnetic elements are either hard ferrite ceramic or high-intensity rare-earth NdFeB, built into a frame sized and shaped to your application.
Choosing the Right Intensity
Contamination size and type determine which grade you need — and the grill is only efficient if contamination stays within roughly 1–1.5% by weight of the product (for higher levels, look at our Drawer or Multi-Drawer Grills instead).
| Grade | Field Strength | Best For | Max. Operating Temp. |
| Low-Intensity | ≈2,500 Gauss | Nuts, bolts, screws, broken washers — large pieces from a distance | 250°C |
| Medium-Intensity | ≈6,500 Gauss | Particle contamination down to 150 microns, free-flowing/non-sticky material | 80°C |
| High-Intensity | ≈11,000 Gauss | Fine contamination down to 1 micron | 80°C (350°C with SmCo) |
| Super High-Intensity | ≈12,000 Gauss | Maximum-strength fine capture | 80°C |
Each grade is available in round diameters and square dimensions from 150×150mm to 600×600mm, in 50mm increments — tell us your duct or hopper opening and we'll match the frame to it.
Key Advantages
- Fits Any Opening
Round, square or rectangular frames sized to your hopper, chute or duct.
- No Power Cost
Permanent magnets — no electricity, no controls, nothing to maintain beyond periodic cleaning.
- Four Intensity Grades
From 2,500 to 12,000 Gauss, matched to your contamination size.
- Full Stainless Construction
SS 304/316 throughout, suitable for food, pharma and chemical environments.
Where It's Used
Plastics, food processing (sugar, coffee, tea, grains, pulses, flour, spices, milk), pharmaceutical, chemical, ceramic, colours and paints, pigments, ink, refractory and mineral processing.
Keeping a Grill Effective
- Clean the grill thoroughly before every batch, or on a schedule matched to your contamination load.
- Iron accumulated over time reduces attraction — for the strongest capture, the grill needs to stay clean.
- Medium and high-intensity grills are also available rated to 200°C, and high-intensity to 350°C with Samarium Cobalt magnets, on request.
Frequently Asked Questions
Round or square — which should I choose?
It comes down to your existing opening — round for pipes and circular ducts, square or rectangular for hoppers and chutes. Both are available in the same intensity range.
How often does it need cleaning?
Before every batch is the safest baseline; some lines run on a schedule instead. More frequent cleaning means stronger, more consistent attraction.
Can you build a custom size?
Yes — customised grill and magnetic grid designs are available beyond the standard size range.
In the Field: Rieco Magnetic Grill Installation
Why Buy From PML
- 65+ years of magnetic separation engineering — trusted by Hindustan Unilever, Cipla, Tata Tea and Pidilite Industries, among others.
- Made and tested in-house — every grill is manufactured and checked to its stated Gauss rating.
- Four intensity grades from 2,500 to 12,000 Gauss to match your exact contamination profile.
- Magnetic calibration and audit services available to verify performance over time.
Need a custom size, shape or intensity? Enquire now and our engineering team will size the right grill for your process.