Patent ID: 8505735

Claim:
A vertical ring magnetic separator for de-ironing of coal ash, wherein, the vertical ring magnetic separator comprises a rotating ring, an inductive medium, an upper iron yoke, a lower iron yoke, a magnetic exciting coil, a feeding opening, a tailing bucket and a water washing device, wherein the feeding opening is used for feeding the coal ash to be de-ironed, the tailing bucket is used for discharging the non-magnetic particles after de-ironing, the upper iron yoke and the lower iron yoke are respectively arranged at the inner and outer sides of the lower portion of rotating ring, the water washing device is arranged above the rotating ring, the inductive medium is arranged in the rotating ring, the magnetic exciting coil is arranged at the periphery of the upper iron yoke and the lower iron yoke, so as to make the upper iron yoke and the lower iron yoke to be a pair of magnetic poles for generating a magnetic field in the vertical direction, wherein the inductive medium is layers of steel plate meshes, each steel plate mesh is woven by wires, and the edges of the wires have prismatic sharp angles, and the vertical ring magnetic separator provides a magnetic field strength of at least 15,000 Gs.