System to Separate Non-Ferrous Metals by High- Frequency Magnetic Field
Eddy Current Separator (Non-Ferrous Separator) is to separate non-ferrous metals by the induction principle (eddy current) of a high-frequency magnetic field. The powerful moving magnetic field on the surface of the drum is generated when the powerful permanent magnet inside the drum rotates at high speed, separating three types of materials: iron, non-metal, and nonferrous metals such as aluminum and copper. The permanent magnet drum of high capability rotating inside the conveyor belt at high speed induces the eddy current in non-magnetic nonferrous metals moving on the drum to generate a magnetic field. This force is exerted in the opposite direction to gravity, and nonferrous metals bounce off by repulsive power from mixed wastes during movement on the conveyor belt. Non-Ferrous metals with larger surface areas, lighter weight and higher conductivity are usually well separated. The separator requires virtually no maintenance and guarantees the stable separation for long-term operation. The Non-Ferrous Separator is installed together with a permanent magnetic separator on MSW to play an important role for sorting waste.