SU1431840A1 - Disk magnetic separator - Google Patents

Abstract

The invention relates to the separation of materials according to magnetic properties of St.-you and m. used in the food, feed and industrial sectors and for the enrichment of minerals. The purpose of the invention is to increase productivity by increasing the recovery zone. The operating part of the separator mounted on the shaft is made of non-magnetic disks (D) with radial strips 4. In the upper part of D 3 on the stationary shaft 7 there is a magnetic system (MS) 5 with poles 6, the diameter of which is equal to the feeder width 2. Cleaning mechanism D 3 includes blocks of permanent magnets with flat magnetic cores 9 and with shields (E) 12, placed in gaps between D 3, and a device for swinging magnetic blocks with E 12 in the transverse direction to the shaft 7, made in the form of brackets 18. The latter are hingedly hinged on axis 16 parallel Flax shaft 7 and the associated crank-rocker mechanism with the shaft 7. The magnetic poles 9 are sharp-angled, with the latter and the adjacent pole 6 MS 5 have opposite polarity. A magnetic fraction receiver 19 with lugs 20 is mounted on the side of D 3, and an outlet nipple 21 for purified bulk material is located under the DZ. The source material from the feeder 2 falls on the slopes of D 3 and moves from them into the gap between D 3. Magnetic impurities are attracted to D 3 and the bars 4 are transported to the edge of the MS 5. When rotating D 3 synchronously rotates with a hook and rocker mechanism which leads to the oscillatory movement of the magnetic blocks from E 12. When the strip 4 and the poles of the magnetic cores 9 come closer, the magnetic impurities pass abruptly to the E 12 and unload into the receiver 19. The material cleared of magnetic impurities is discharged through the pipe 21. 5 Cp f-ly, 4 ill. In (L with 00 4/1 W Fig1

Description

The invention relates to the separation of minerals by magnetic properties and can be applied in the food and feed industry industries for mineral processing.

The purpose of the invention is to increase productivity by increasing the recovery zone.

FIG. 1 shows a separator, a general view; in fig. 2 is a view A of FIG. one; in fig. 3 is a view B in FIG. one; in fig. 4 - magnetic unit with screen, general view.

The separator includes an inlet 1 of the Emitting material, a receiving and distributing device - a feeder 2 for distributing the power over the diameter of the disks, the disks i 3 of a nonmagnetic metal with fixedly fixed radial on them: slats 4. The disks 3 are mounted in a bearing -; Nikov supports and can rotate from the drive (not shown). Magnetic system 5 is located in the upper part of the discs 3 with-; Luses 6, mounted on a fixed wa- I; iy 7. The diameter of the magnetic system 5 is equal to the I and the feeder. The cleaning mechanism of disks 3 i includes blocks of 8 permanent magnets with: flat magnetic cores 9, which have; There are acute-angled poles 10. The neighboring poles 6 of the magnetic system 5 and the poles 10 have opposite polarity. I Poles 10 are included in the longitudinal protrusions 11 H-shaped in cross section; screens 12, magnetic blocks 8. Screens i are made of non-magnetic metal. Length: blocks of 8 magnets equal to the length of the screens 12, and the pyrene does not exceed the width of the gap between the discs 3. The tabs 11 of the screens 12 and the poles 10 of the magnetic core 9 are located: at an acute angle to the base of the magnetic; blocks 8 so that the protrusions 11 of the screens 12 and the side surface of the screens 12 form a chute 13 with a slope to the end of the magnetic unit 8.

A device for rocking the magnetic units 8 with shields 12 includes a crank 14 fixedly mounted on the same hub as the disks 3, which in turn rests on the bearing supports and rotates synchronously. Crank 14 is connected via a yoke 15 to an axis 16 parallel to shaft 7. On an axis 16 brackets 18 are hingedly suspended, on which screens 12 are fixed. On the same axis 16 brackets of 17 magnetic blocks 8 are fixed (fixed). Swing of magnetic blocks 8 with screens 12 is carried out in the direction transverse to the shaft 7.

A magnetic fraction receiver 19 is installed at the side of the disks 3, made in the form of a box with stops 20. Moreover, the stops 20 on the receiver 19 are arranged in pairs at a distance from each other equal to the width of the screens 12 of the magnetic blocks 8 and are located in the planes of the side walls of the screens 12.

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Directly below the discs is the outlet 21 for cleaned bulk material.

The separator works as follows.

Bulk material with magnetic impurities through the inlet pipe 1 enters the receiving and distributing device of the feeder 2, where it is distributed across a width equal to the diameter of the magnetic system 5 of the disc 3. From the receiving and distributing device of the feeder 2, the bulk material falls on the slopes of the disks 3 and flows off them into the gap between the discs 3. When bulk material moves along the discs or near them, magnetic impurities are inhibited by the magnetic system field 5 and are attracted to the discs 3. When the discs 3 are rotated, the slats 4 transport the attracted magnets nye impurities to the edge 5 of the magnetic system.

When the disks 3 rotate synchronously with them, the crank 14 of the device for swinging the magnetic blocks 8 with the screens 12 rotates. Rotation of the crank 14 through the rocker arms 15, the axis 16, the brackets 17 and 18 leads to oscillatory movement of the magnetic blocks 8 with the screens 12 of the cleaning mechanism drives. When screens 12 are moving in the gap between the discs 3 of the chute 13 all the time, they change their angle of inclination with respect to the horizontal, however, in any position it remains greater than the angle of natural inclination of the bulk material, which ensures free flow of material along the chute to the outlet port 21. Moving the bar The 4 disks 3 are synchronized with the movement of the magnetic blocks 8 with the shields 12 so that when the bar moves to the edge of the magnetic system 5 from above (non-moving on the shaft 7) the blocks 8 with the shields 12 move to the edge of the magnetic system from the bottom.

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At a distance of 50-60 mm from the edge of the magnetic system 5 to the poles of 10 magnetic blocks 8, a magnetic field arises between them with a gradient of magnetic field intensity directed toward the poles 10. When the strip 4 and poles 10 of the magnetic cores 9 approach the distance 20 -30 mm magnetic impurities jump over to the protrusions 11 of the screens 12. During the transition, the strip 4 shields the magnetic impurities and the protrusions 11 of the screens 12 from the flow of bulk material. Purified from magnetic impurities bulk material falls to the bottom of the chute 13 and flows through its edge to the outlet nozzle 21.

The distance of 20–30 mm, at which magnetic impurities are transferred to the screens 12, corresponds to the extreme point of the trajectory of movement of the magnetic blocks 8 with the screens 12 of the disk cleaning mechanism.

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Further, the magnetic blocks 8 with screens 12, on the protrusions 11 of which there are magnetic impurities, move from the gap between the disks 3 to the receiver 19 of the magnetic fraction.

In the position of the magnetic blocks 8 with screens 12 above the receiver 19, the side walls of the screens 12 cling to the stops 20, and the magnetic blocks 8 on the brackets 17 move to another extreme position of the disk cleaning mechanism, which practically coincides with the plane of the separator wall. During the movement of the blocks 8, their distance from the screens 12 increases from 2 to 100 mm, the connection of magnetic impurities with the magnetic field of the blocks 8 monotonously decreases and already from a distance of 60 mm the magnetic impurities are pushed into the receiver 19 by a force of gravity. Then the magnetic The blocks 8 of the disk cleaning mechanism move in the direction of the gap between the disks, in the path of picking up the screens 12. The cleaning cycle is repeated.

As a result of the described version of the separator, the size of the extraction zone is doubled, respectively, the separator productivity is also doubled.

The magnetic system of the separator across the entire width of the feed works to extract, and the extraction zone is co-mixed with the zone of transportation of magnetic impurities. The mass of the magnetic system, spent on the performance of 1 t / h, is two times less than in the known.

Claims (6)

1. A disk magnetic separator containing a feeder, a working member mounted on a shaft of non-magnetic disks with radial strips and a magnetic system placed in the disks, a disk cleaning mechanism and separation product receivers, characterized in that, in order to increase productivity by increasing the extraction zone , the disk cleaning mechanism is made of blocks of permanent magnets with shields of non-magnetic material and a device for swinging the magnetic blocks with shields in the transverse direction to the separator shaft, with than the magnetic blocks with screens are placed in the gaps between the disks, and the working width of the feeder is equal to the diameter of the magnetic 0 system located at the top of the drive. 2. A separator according to claim 1, characterized in that the device for swinging the magnetic blocks with screens is made in the form of brackets hinged to the axis, parallel to the separator shaft, and connected to the separator shaft by means of a crank-beam mechanism. 3. A separator according to claim 1, characterized in that the screens of the magnetic blocks in cross section are H-shaped with longitudinal acute-angled protrusions along the edges, the length of the magnetic blocks and screens being equal to the length of the magnetic system in the radial direction, and the width does not exceed width of the gap between the disks. 5 4. A separator according to claim 1, characterized in that the magnetic blocks are provided with flat magnetic conductors with acute angles placed in the longitudinal projections of the screens, and the projections of the screens and the poles of the magnetic conductors are arranged at an angle to the base of the magnetic blocks. 5. A separator according to claim 4, characterized in that the projections of the screens and their side surfaces form an inclined chute. 6. A separator according to claim 1. characterized in that the receiver of the magnetic fraction is provided with stops set in pairs at a distance equal to the width of the screens of the magnetic blocks and located in the planes of movement of the side walls of the screen. five 2 12 YU (Riga.Z 7J eleven 12 -9 FIG.