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Goudsmit Magnetics to show new modular mobile overband magnets at IFAT 2022

Pieces of iron are magnetically separated from rock
A Goudsmit Magnetics Ferrite modular mobile overband magnet

At IFAT in Munich, Goudsmit Magnetics will show its 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 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 construction of the mobile overband magnets

The 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, gear motor drive, or drum motor 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 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 of the modular mobile overband magnets

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 magnet is better protected against contamination. Less iron sticks to the outside of the equipment, 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 optimized 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 that there is a greater demand for more efficient magnets for mobile crushing, screening, and separation installations from customer requests. The 3-pole Ferrite system was used for overhead conveyor magnets and has been optimized for mobile applications. The 3-pole Neodymium system is a new design. Both the Neodymium and Ferrite magnets can be seen at the IFAT fair.  

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