The operating principle

General operating principle of Eddy Current Separators

Conductive particles (aluminium, copper, etc.) are separated from insulators. The eddy currents are induced in conductive particles due to a time-varying magnetic field. This results in repulsive forces. 
Owing to the particularly strong permanentmagnetic field and the high speed of the magnetic rotor, good separation results can be obtained even with small or difficult-to-separate materials.

The material to be separated is transported over the belt conveyor in a single-particle-layer and gets to the area of fast rotating magnetic fields of the head pulley at the discharge side. This induces eddy currents which build up a magnetic field in each particle of non-ferrous metal. The magnetic field opposes the permanentmagnetic field of the magnetic rotor. Therefore a strong impulse is exerted on the parts of non-ferrous metals, throwing these particles off the stream of the conveyed material.

Operating principle of the centric Eddy Current Separator INP

Ferromagnetic parts contained in the stream of material are moreover transported with the centric system with the belt conveyor around the head pulley and are thus separated from the stream of material.

Since the material is exposed to the magnetic field for a long period of time and due to the usage of various rotors with different pole numbers, the centric IFE INP allows for a high specific feed rate at particle sizes of > 15 mm.