SU1558477A1 - Method of separating ferromagnetic materials by size - Google Patents

Abstract

The invention relates to magnetic enrichment and makes it possible to increase the separation efficiency of ferromagnetic materials by size. The source material, consisting of ferromagnetic bodies of various shapes, is fed to a sieving vibrating surface (VP). At the same time, the material is affected by a constant magnetic field, the direction of the gradient of intensity of which coincides with the direction of the forces of gravity, and the intensity increases towards the periphery of the VP, for which systems of permanent magnets are installed under the EP. Under the action of vibration, the particles detach from the VP. Small particles have a smaller flight path than large ones and appear in the lower layer of the vibrating material. Being closer to the permanent magnets, they are removed into the undersize product faster by the action of a magnetic field.

Description

(21) 4391808 / 31-03

(22) 03/15/88

(46) 04.23.90. Bul Number 15

(71) Research and Design Institute for Mineral Processing and Mechanical Processing "Ural-mechano

(72) Yu. F. Lizin, Yu. I. Voroshilov, G. A. Ovchinnikov, G. A. Rbov,

Yu. G. Prokhorov, A. A. Kobylko

and A.P. Romashov

(53) 621.928.89 (088.8)

(56) USSR author's certificate

No. 1119731, cl. At 03 On 1/00, 1985.

Wegman, EF. The graining of ores and concentrates. - M .: Metallurgi, 1968, p. 191.

This invention relates to magnetic enrichment and can be used to size ferromagnetic materials.

The purpose of the invention is to increase the efficiency of separation.

The essence of the method is as follows.

The source material, consisting of ferromagnetic bodies of various shapes, is fed to a sieving vibrating surface. % Simultaneously, the source material is affected by a constant magnetic field, the direction of the gradient is stress (54). A METHOD FOR SEPARATION OF FERROMAGNETIC MATERIALS BY LARGENESS

(57) The invention relates to magnetic enrichment and improves the separation efficiency of ferromagnetic materials by size. The source material, consisting of ferromagnetic bodies of various shapes, is fed to a sieving vibrating surface (VP). At the same time, the material is affected by a constant magnetic field, the direction of the gradient of the intensity of which coincides with the direction of the forces of gravity, and the intensity increases towards the periphery of the VP, for which systems of permanent magnets are installed under the EP. Small particles have a smaller flight path than large ones and appear in the lower layer of the vibrating material. Being closer to the permanent magnets, they are removed into the undersize product faster due to the magnetic field.

Which is the same as the direction of gravity, and the intensity of the magnetic field increases to the periphery of the vibrating screening surface.

The method is carried out as follows.

The material is fed to the screening surface of a vibrating screen, under which a system of permanent magnets is installed, and the magnetic field strength is increased to the periphery of the flow moving along the vibrating screen

Under the influence of vibration, the material is detached from the screening surface.

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However, large massive particles have a larger flight path than small ones, which have a small mass and, consequently, a small acquired energy. The separation of the material occurs, in which small particles appear below.

During the fall of the material on the Boreal surface, under the action of gravitational forces, small particles are closer to the zone of action of the magnetic field, and therefore their speed to the screening surface increases, and the magnetic field from under the screening surface, along with gravitational forces increases the rate of their removal into the undersize product. Resilient and underslip products unload.

Claims (1)

Invention Formula The method of separation of ferromagnetic materials by size, including the supply of the source material to the sifting vibrating surface and the output of the separation products, characterized in that, in order to increase the separation efficiency 0, the source material is simultaneously applied to the vibrating surface by direct the gradient of the intensity of which coincides with the direction of the forces of gravity, and the intensity of the magnetic field increases to the periphery of the screening surface.