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Modular Overband Magnet For Mobile Recycling Systems

At IFAT in Munich, Goudsmit Magnetics from Waalre showed their recently developed range of mobile overband magnets.

The modularly designed magnets remove iron particles from underlying material streams and are intended for mobile recycling systems such as shredders, crushers and screens. The magnetic separators are constructed with either Ferrite or Neodymium magnets, with the latter being upgraded from a 2-pole to a 3-pole system. This modified design provides a stronger magnetic field from the same number of magnets. The compact and strong Neodymium 3-pole overband allows iron to rotate more and pulls it loose, even when it is under a pile of material. This ultimately results in a cleaner product and allows more metal to be recovered.

Modular Overband Magnet For Mobile Recycling Systems
The recently developed, modular, mobile overbelt magnets are intended for recycling systems such as shredders, crushers and screens.

Modular construction

The recent design of the mobile overband magnets is modular and includes an extra attenuator at the end of the magnet. As mobile crushers have a diverse power supply – electric or hydro – the modular construction offers the user a choice between a hydro drive, gearmotor drive or drummotor drive. The weakening magnet in the new version comes on top of the various working widths, available in 650, 800, 1000, 1200 and 1400 mm. This additional magnet carries the material further outside the conveyor belt and ensures a better shedding of the attracted iron parts. It also significantly reduces belt wear. An additional advantage of the Neodymium magnets is that the low weight of the magnet increases the mobility of the shredder or crushing unit.

Improved shielding

Both the magnetic field and the shafts and bearings are better protected in the new design. The magnetic field no longer radiates outside the side of the magnet, so the overband is better protected against contamination. Less iron sticks to the outside of the construction, saving cleaning time and maintenance. A protective cover on shafts and bearings prevents metal parts such as iron wire from wrapping around the shaft. The optimised shielding on the underside of the belt ensures that no iron parts can get between the belt and the magnet. Moreover, impact-reducing layers – placing an extra layer of rubber between the carriers – extends the life of the belt. The overband magnet also contains two central lubrication points, saving operators valuable time. 

Goudsmit Magnetics has noticed from customer requests that there is a greater demand for more efficient magnets for mobile crushing, screening and separation installations. The 3-pole Ferrite system was used from the outset for overhead conveyor magnets but has now been optimised for mobile applications. The 3-pole Neodymium system is a completely new design and designed in series. Neodymium is stronger, while the price is Ferrite is much more desirable.

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Goudsmit Magnetic Systems, Goudsmit Magnetic Supplies & Goudsmit Magnetic Design are subsidiaries of the international Goudsmit Magnetics Group. Founded in 1959, Goudsmit has more than 55 years experience in business, now being one of the...