At Powtech in Nuremberg (9. - 11. April 2019), Goudsmit Magnetics from Waalre presents an automatically cleaning "Easy-Clean" magnetic separator. This is used to remove metal particles (> 30 μm) from powders, for example in the food, chemical, ceramics and plastics industries. The Easy Cleanflow magnet is distinguished by the very high magnetic flux density of over 12,000 Gauss on the bars which come into direct contact with the product, as well as a deep magnetic field, effectively rendering high capacities of powders and granules iron free. The magnet is dust-proof up to an overpressure of 1.5 bar and has a simple control. The user-friendly cleaning requires an air pressure of 6 bar and a trigger signal of 24 V DC. The collected iron particles end up in a container.
The modified design incorporates a series of 50 mm diameter thick rods instead of two 25 mm diameter thin rods used previously. This provides for a higher deposition yield, such as new measurement techniques in, among other things, simulations of magnetic fields and tests showed. The thicker rods have a higher flux density and a deeper capture field and have a longer contact with the magnetic particles. Another advantage is that the magnet as a whole is flatter and thus requires a lower installation height.
The pneumatic magnetic rods simplify the cleaning process. The magnetic bars are moved out via a guide and as soon as they are outside the housing, the magnetic bars are pushed out in the bars. A metal sheet holds back the collected magnetic particles, whereupon they fall into a collecting container.
The Easy-Cleanflow-Magnet is due to its enormous magnetic force of 12,000 Gauss on the bars also extremely well suited for the separation of small, weak magnetic stainless steel parts. In the tests and measurements, it has been found, among other things, that the magnetic force alone is not sufficient to deposit stainless steel particles. It's also essential that these parts touch the bars as they go along them. Optionally to be mounted deflectors, the product streams with weak magnetic
(Stainless steel) particles well along the bars, so that the product always touches the bars