CROSSED STRUCTURE MAGNETIC SEPARATOR WITH TETRAPOLAR ROTARY MAGNETIC CIRCUIT AND ANNULAR ROTORS

摘要

1. Magnetic separator having at least one horizontal row of highly magnetically permeable material arranged within an external housing and having at least a pair of electromagnets consisting of a magnet yoke around the arm of which a coil is arranged, the electromagnets having alternate north and south polarities, whereas around the periphery of the rotor a series of boxes containing plates are mounted and a feed device for the raw material to be separated is arranged before each electromagnet in the rotating direction of the rotor and a collecting device for the magnetic particles as separated is arranged behind each electromagnet in the rotating direction of the rotor outside the magnetic force lines running from the north pole towards the south pole as formed by the electromagnets, characterized in that at least four electromagnets (3 0) with alternate north and south polarities are arranged in the periphery of the rotor (4) in a cross like, structure such that the magnetic force lines (3) run from the two north pole electromagnets (3 0) located opposite to each other to the two south pole electromagnets (30) located in between in a tangential course of the rotor (4).