Some stainless steel alloys are weakly magnetisable or become weakly magnetisable for a short time due to changes in the microstructure when passing through shredding systems. Such parts cannot be attracted or held with "normal" magnetic separators. Extremely strong magnetic fields with large field gradients are required to hold weakly magnetised metals.

To completely magnetise larger stainless steel parts, a high field depth is also required so that the magnetic field can penetrate the parts as completely as possible.

Magnetic tape rolls with high flux density and gradient values have been on the market for a long time. They consist of magnetic discs, which are alternately assembled with steel discs on a non-magnetic shaft.

Such a construction is only possible up to a certain roller diameter and only with small magnetic disc thicknesses. The depth effect depends on the pole spacing and is relatively small for these magnetic tape rollers due to their design. They are therefore mainly suitable for small material grain sizes.

Thanks to their special design, our stainless steel separators achieve the highest flux density and gradient values with a very high depth effect. Instead of thin magnetic discs, large neodymium magnetic blocks are inserted and fixed between the steel discs.

This design requires extreme forces when pressing in the magnetic blocks, but generates an extremely high energy density. All gaps are filled with a casting resin and finally the finished roller is turned.