Plate Magnets

The permanent Plate Magnet is a versatile and cost-effective magnetic separator.  Ideal for removing occasional tramp ferrous metal from conveyed or gravity-fed product flows.  Easily installed with limited maintenance apart from regular cleaning of captured ferrous metal.

Plate Magnets are available in two magnetic strengths:

  • Strontium Ferrite (Standard Plate Magnet): Standard-strength with a deep magnetic field for larger tramp metal extraction;
  • Rare Earth Neodymium (Rare Earth Plate Magnet):  High-strength with a shallow intense magnetic field for fine ferrous metal separation;

Description

Plate Magnets provide inexpensive and effective magnetic protection against occasional tramp iron contamination.  These permanent magnetic separators are located in a wide-range of manufacturing and processing plants either suspended over conveyors or positioned in chutes.  Plate Magnets are virtually maintenance free, offering a long service life and are not affected by wet conditions.

The Bunting range of Plate Magnets feature a magnetic stainless-steel casing, which utilises projected magnetic stainless-steel poles for an enhanced field intensity.

A specially-designed Dual-Deep Field Plate Magnet extracts metal from deeper burdens and increased throughput rates.  The Diagonal Leg Plate Magnet provides double-protection against metal contamination.

Operation

Permanent Plate Magnets attract and then hold ferrous metal contamination to the face.  The captured metal is then removed manually on a frequency dictated by the level of metal contamination.

The Plate Magnets can either be suspended over a conveyor or positioned inside a chute.  Plate Magnets are ideal for suspending over conveyors less than 450mm in width.  Once exceeding 450mm, the Suspension Magnet Permanent is recommended.

Plate Magnets inside a chute can have different face designs:

  • Tapered step (either single or double) – a tapered step is an angled steel step which intensifies the magnetic field. Once captured, ferrous metal migrates behind the step which is out of the product flow;
  • Bar – A single steel bar runs across the face of the Plate Magnet intensifying the magnetic field at that point;

Models

Plate Magnets are available in two magnetic strengths:

  • Strontium Ferrite (Standard Plate Magnet): Producing a deep magnetic field and ideal for suspending over conveyors to remove larger tramp metal and for positioning in wide chutes;
  • Rare Earth Neodymium (Rare Earth Plate Magnet): The high-intensity magnetic strength enables the capture of smaller metals.  Commonly installed in chutes where product cascades over or across the magnet face;

There are a number of different extended housing configurations for Plate Magnets.

Dual Deep Field Magnet

The dual deep field magnet is used to extract metals from deeper burdens and high throughput rates.  With two powerful Plate Magnets located at either side of a housing, the free-falling product stream is fed through the top of the housing and deflected towards the magnetic surface of the Plate Magnet by a diverter plate.  Tramp ferrous metal is held by the magnetic field on the surface of the Plate Magnet, whilst metal-free product is allowed to fall away under gravity.

Diagonal Leg Plate Magnet

The diagonal leg Plate Magnet configuration consists of two individual Plate Magnets fitted into a diagonal leg arrangement.  Material cascades through the opening of the housing, falling directly onto the face of the first Plate Magnet.  The material then continues to fall onto the surface of the second Plate Magnet.  This design provides a double separation opportunity and is ideal for maximising tramp meta; separation and when ferrous metal is trapped beneath a product burden.

Both the Dual Deep Field Magnet and the Diagonal Leg Plate Magnet use either Strontium Ferrite or Rare Earth Neodymium Magnets.

Applications

Plate Magnets are extremely versatile and are subsequently used in a wide range of applications including:

  • Food processing plants – above infeed conveyors and positioned in chutes;
  • Plastic manufacturing operations;
  • Recycling plants;
  • Quarries;
  • Glass plants;
  • Wood processing operations.