Application of ferrite block magnets

Ferrite magnetic plates (plate magnets) remove ferromagnetic (Fe) particles as small as 0.5 mm. An advantage is that they are suitable for use at higher temperatures (250°C), but they are not suitable for capturing stainless steel scrapings. The dimensions are selected based on the desired holding field depth: the deeper the field, the heavier and larger the magnet becomes. For this reason one often opts for the more compact and equally strong neodymium (Neoflux®) plate magnets.

Placement of ferrite block magnets

• Overbelt placement or installation in/against a free-fall line. For placement in a free-fall line Goudsmit also supplies mounting plates (see also chute magnets). This makes dust-proof mounting possible and makes them easy to clean.
• For a width in excess of 300 mm a neodymium magnet is recommended for installation in a free-fall line. In such applications ferrite plate magnets are too heavy for manual cleaning. If you are considering overbelt placement, keep in mind that the construction directly beneath the magnet must be made of non-magnetic material.

Design of ferrite block magnets

Goudsmit builds plate magnets for mounting above production lines that feature 'flux control' to create a deeper holding field. These have extra magnets between the poles that cause the lines of flux to penetrate deeper into the product flow. A ridge prevents captured iron particles from being carried away again by the product flow.

Cleaning of ferrite block magnets

Cleaning of the plate magnet is performed manually (by wiping) or through use of an extractor plate (quick cleaning). Hereby you swing the extractor plate away from the magnet. The Fe particles fall off of the extractor plate as soon as they are moved far enough away from the magnetic field. For quick cleaning, see also chute magnets.