SU1669560A1 - Electromagnetic separator - Google Patents

Abstract

This invention relates to the beneficiation of minerals, in particular magnetic separators. The purpose of the invention is to expand the functionality of the separator by allowing the separation of particles by size. The separator contains a hollow cylindrical working body 1, concentric with it inductor 2 of a rotating magnetic field. A spiral-cylindrical guide 3 is placed coaxially into the working organ 1. In the rotating magnetic field, the particles move along the spiral-cylindrical guide 3 at a speed proportional to their size. After reaching the largest particles of the last turn, the field is turned off. On each turn of the spiral-cylindrical guide 3, particles of a certain size class remain. 2 Il.

Description

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This invention relates to the beneficiation of minerals, in particular magnetic separators.

The purpose of the invention is to expand the functionality of the separator by allowing the separation of particles by size.

FIG. 1 shows a separator, a general view; FIG. 2 is a section A-A in FIG. one.

The separator includes a hollow cylindrical working body 1, an inductor 2 of a rotating magnetic field. In organ 1 a spiral-cylindrical guide 3 and ferromagnetic particles 4 are placed.

The ferromagnetic particles 4 to be separated are fed to the first turn of the spiral-cylindrical guide 3, after which they turn on the inductor 2, which creates a rotating magnetic field. As a result of the action on the ferromagnetic particles of the rotating magnetic field, they acquire different speeds of motion and begin to move along the turns of the spiral-cylindrical surface.

The speed of ferromagnetic particles is proportional to their size and frequency of rotation of the magnetic field. At a constant frequency of rotation of the magnetic field, the speed of movement of ferromagnetic particles is the higher, the larger their size. After the first ferromagnetic particles up.

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the last turn is grabbed, the field is turned off. The entire given size range of the original ferromagnetic material is divided into size classes by turns of a spiral-cylindrical surface. The size of ferromagnetic particles in classes increases from turn to turn to the center. The number of classes into which this size range of ferromagnetic particles is divided is equal to the number of turns. The variation in the size of ferromagnetic particles in each class depends on the number of classes into which the initial range of sizes of ferromagnetic particles is divided. The more classes there are, the less is the spread in the sizes of the separated ferromagnetic particles.

After the separation is completed, the ferromagnetic particles of each class are unloaded from the turns.

Claims (1)

The invention The electromagnetic separator comprising a horizontally mounted hollow cylindrical working body with a rotating magnetic field concentric with it is distinguished by the fact that, in order to expand the functionality of the separator by allowing the separation of particles by size, the separator is provided with a spiral-cylindrical guide installed inside the working body with it.