MAGNETIC SEPARATOR WITH VARIABLE MAGNETIC FIELD Russian patent published in 2010 - IPC B03C1/12 

FIELD: technological processes.

SUBSTANCE: invention is intended for removal of ferromagnetic metal particles from granulated loose materials. Magnetic separator comprises body in the form of rotary nonmagnetic drum, two magnetic systems arranged in it with permanent magnets arranged with the possibility to vary intensity of magnetic field developed by them. Drum is equipped with shaft and magnetic systems installed on both sides of shaft with the possibility to vary position relative to side inner surface of drum. Shaft is rigidly connected to body element in the form of frame, two sides of which are perpendicular, and two - parallel to shaft. At the latter there are two yokes installed, in every of which there is a magnetic system fixed, comprising a unit of permanent magnets. Yoke is arranged in the form of sector element with back wall parallel to side surface of drum, and two sides walls, which are perpendicular to axis of drum, each side wall of yoke is equipped with rectangular and round cuts. Guides of square shape are pulled via rectangular cuts with clearance and equipped with limiters in the form of two forks that serve for adjustment of yoke travel relative to side surface of drum and perpendicular to its axis, between back wall and guides of yoke there are cam shafts installed with two eccentrics, which interact with forks of guides. Each cam shaft is installed with the possibility of rotation in two holders, which are rigidly joined to walls of frame, parallel to shaft. Shaft of drum is installed with the possibility of rotation around its axis at the moment of magnetic systems adjustment for their setting into working position. Length of rectangular slot in yoke wall is designed so that angle of cam axis rotation makes 180°.

EFFECT: improved efficiency of separation.

2 cl, 5 dwg