SU1558480A2 - Drum magnetic separator - Google Patents

Abstract

This invention relates to magnetic enrichment and is intended for the separation of ferrous and non-ferrous metals. The goal is to increase the separation efficiency by reducing the interinflationing of magnetic and nonmagnetic fractions. For this purpose, a non-magnetic drum (B) 2 is rotatably mounted in the separator housing 1. Parallel to the axis B, flat permanent magnets (PM) 4 of the magnetic system 3 are installed in 2 rows. This row is PM 4 located below the horizontal plane passing through the center B 2, are installed with a longitudinal displacement one relative to the other by an amount equal to 0.1-0.4 of the length PM 4. The spacing of the rows PM 4 located below the horizontal plane of symmetry B 2 is 1.5-1, 7 p yes more than a step of the rows located above this plane. In the rows located above receivers 6 and 7 of the separation products, PM 4 have the same polarity. The source material is continuously fed to the B 2 from the feeder 5. When the material enters the B 2, small ferromagnetic particles, entering the zone of action of the magnetic field, form a strand in which nonmagnetic particles are trapped. When moving over the rows PM 4, set above the horizontal plane passing through the center B 2, the strands disintegrate from the action of an alternating magnetic field and release non-magnetic particles. 2 Il.

Description

The invention relates to magnetic enrichment, in particular to drum magnetic separators, can be used to separate waste ferrous and non-ferrous metals and is an improvement of the invention according to the author. St. No. 1342528.

The purpose of the invention is to increase the separation efficiency by reducing the reciprocal absorption of magnetic and non-magnetic fractions.

FIG. 1 shows a separator, a longitudinal section; in fig. 2 - scan of the magnetic system of the separator.

The drum magnetic separator comprises a housing 1, a non-magnetic drum 2 rotatably mounted, a magnetic system 3 consisting of flat permanent magnets 4 arranged in rows parallel to the drum axis, a feeder 5 and magnetic receivers 6 and non-force friction these particles move over the drum the magnetic system into an area where there is no magnetic field, and is discharged into the receiver 6.

When the material enters the drum, small ferromagnetic particles, entering the zone of action of the magnetic field, form a strand in which nonmagnetic particles are trapped. However, these strands, when moving over the rows of magnets, 10 installed above the horizontal plane passing through the center of the drum, decay from an alternating magnetic field and release non-magnetic particles.

The particles of non-magnetic material are also clamped by lumpy and bar ferromagnetic materials, which are twisted when passing over that part of the magnetic system, where the spacing of the rows of magnets is 1.5-1.7 more,

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nitny 7 products. The pitch is 20 than the pitch of placing a series of magnets in

the friction forces of these particles are moved by the drum over the magnetic system to the zone where there is no magnetic field, and are discharged into the receiver 6.

When the material enters the drum, small ferromagnetic particles, entering the zone of action of a magnetic field, form a strand in which nonmagnetic particles are also trapped. However, these strands, when moving over rows of magnets, 0 set above the horizontal plane, passing through the center of the drum, decay from the action of an alternating magnetic field and release non-magnetic particles.

The particles of non-magnetic material are also clamped by lumpy and bar ferromagnetic materials, which are twisted when passing over that part of the magnetic system, where the spacing of the rows of magnets is 1.5-1.7 more,

0 than the step of placing a series of magnets in

the rows of permanent magnets, which are below the horizontal plane of symmetry of the drum, are 1.5-1.7 times the pitch of the rows that are above this plane. The magnets in the rows above the receivers of the separation products have the same polarity. Rows of magnets mounted below the horizontal plane passing through the center of the drum are offset from each other along the axis

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previous part of the magnetic system. In this case, the particles of non-magnetic material pressed by them are released. But the largest bar and lump ferromagnetic materials are not twisted, but only slightly rotated around an axis passing through the center of gravity of these materials. At the same time, the particles of non-magnetic material pressed by them are not released. When the ferromagnetic materials on the drum with a longitudinal displacement on the drum surface move from one guise, 1-0.4 of the length of the permanent magnet. The magnets 4 above the receiver 6 are unipolar.

The lower limit of the shift of the series is due to the fact that with a small shift of the series, the large ferromagnetic materials do not shift across the movement, but the smaller ones shift only slightly and the release of the nonmagnetic particles pressed by them is inefficient. With a shift equal to half the length of the magnet and more on the magnetic

Zones are formed in the system (at the edges of the drum of rows) without a magnetic field and ferromagnetic particles are detached into a nonmagnetic product.

Drum magnetic separator according to ed.

The separator works as follows. 45 St- No. 1342528, characterized in that, with the starting material (non-ferrous chips, to increase the efficiency of separation-metals, containing ferromagnetic effects by reducing the interconnection of the inclusion), non-magnetic and magnetic fractions are continuously supplied from the feeder, row to drum. Non-magnetic particles of permanent magnets located below (chips of non-ferrous metals) due to cent. The horizontal plane passing through the robusting force is separated from the drum .50 The center of the drum is installed with a longitudinal and unloaded into the receiver 7. Ferromagically displaced relative to each other to the earth particles are attracted to the surface of 0.1-0. , 4 lengths of a constant drum with a magnetic field. Due to the magnet.

row to another, displaced relative to each other, they are displaced in the direction transverse to their movement and release the nonmagnetic particles pressed by them.

- When the ferromagnetic material is moved into the zone of action of the unipolar magnets located above the receiver of the magnetic material, they are pressed against the drum, they are not twisted, which prevents their premature detachment from

Claims (1)

Invention Formula five previous part of the magnetic system. In this case, the particles of non-magnetic material pressed by them are released. But the largest bar and lump ferromagnetic materials are not twisted, but only slightly rotated around an axis passing through the center of gravity of these materials. At the same time, the particles of non-magnetic material pressed by them are not released When ferromagnetic materials on the surface of the drum are moved from one drum row to another, displaced relative to each other, they are displaced in the direction transverse to their movement and release the nonmagnetic particles pressed by them. - When the ferromagnetic material is moved into the zone of action of the unipolar magnets located above the receiver of the magnetic material, they are pressed against the drum, they are not twisted, which prevents their premature detachment from Invention Formula 1 2345578E I and and u