EDDY CURRENT SEPARATOR. NO IRON METALS SORTER
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SEPARATION OF NON-IRON METALS BY EDDY CURRENTS (R-SPM) INTRODUCTION Aware of the serious environmental problem, REGULATOR-CETRISA has developed a complete line of Equipment for Separating and Recycling NON-Iron Metals by Eddy Currents (R-SPM). All this is aimed at recuperating non-iron metals in order to significantly reduce the final disposal of products. Both iron and non-iron metals make up one of the groups of materials to be more present in waste reduction, since they involve a high recovery. Aluminium should be considered the most important non-iron metal as it is highly present in our daily lives (cans, boxes, coffee makers, automobiles, etc.) and can be reprocessed innumerable times. PHYSICAL PRINCIPLE The physical principle of the Eddy currents is based on an alternative magnetic field, meaning, in a magnetic field where the North and South Poles alternate. Let's imagine a simple magnet. The lines of force that generate the magnetic field close from one magnetic pole to the other (N-S). If we place an iron metal within the lines of force, these will provoke their attraction towards the magnet. On the contrary, if we place a non-iron metal within the lines of force, these will not produce any effect on the non-iron metal. However, if the non-iron metal is subject to an alternative magnetic field, internal currents will be created that are called Eddy Currents. These Eddy Currents generate a magnetic field that opposes the magnetic field generated by the magnet. This strong opposition of magnetic fields provokes repulsion between them and therefore the non-iron metal will be literally thrown off its natural path, being separated from the rest of the materials. In the attached figure of the R-SPM equipment, the behaviour that the different materials will have can be observed: NON-Iron Metals: They go through an effect of repulsion and jump a certain distance ahead of the Foucault Drum. Iron metals: They are attracted and trapped by the Foucault Drum and are separated by its lower part and behind the drum's shaft. Non-metals: They are not influenced and follow the natural parabolic falling path.

OPERATION The Separator of NON-Iron Metals by Eddy Current (R-SPM) has a conveyor belt that can handle large volumes of processed material. A robust metallic structure is the support for two rollers: the pulling roller, a belt drive that moves the conveyor belt at speed appropriate to the material being processed, and the head roller, or Inductor Drum, responsible for generating the Eddy Currents. To obtain a high alternation of magnetic poles, the drum rotates at a high speed. REGULATOR-CETRISA has equipment with admissible rotation speeds higher than 3,000 r.p.m. The Inductor Drum is made...

CUSTOMIZED DESIGN The parameters corresponding to the material's aggregate grading, its circulation velocity, the effective working width, the Inductor Drum, its rotation speed, etc., are parameters that are interrelated. Through the optimum adjustment of these, we will obtain the best result and the best separation. The equipment will also adjust to the client's needs: legs, motor side, colour, etc. REGULATOR-CETRISA uses all of its experience to determine the ideal equipment for every application. Besides its own experience from innumerable applications, the technical department evaluates...