RU63711U1 - MAGNETIC SEPARATOR - Google Patents

Abstract

The utility model relates to devices for separating materials by magnetic properties and can be used in the enrichment of iron ores. The technical result, to which this technical solution is directed, is to increase the performance of the separator while improving the quality of the magnetic product when working in wet mode. The magnetic separator includes a housing 1, a loading 2 and an unloading 3, 4 elements of concentrate and tailings, a shaft 5 bonded to the housing 1, rotatably mounted on the shaft made of non-magnetic material and fastened to each other by non-magnetic hollow inserts 6 hollow drums 7 sec work surfaces 8, 9. Housing 1, hollow inserts 6 and hollow drums 7 form a bath 10 for the pulp to be magnetically separated. Non-magnetic sectors 11 are placed inside the drums 7 and fastened to the shaft 5 perpendicular to the latter. Permanent magnets 12 are mounted on sectors 11 with alternating magnetic polarity in the direction of rotation of the drums and the same orientation in adjacent sectors. The opposite polarity of the magnets facing the working surfaces of 8 and 9 adjacent drums, provides increased magnetic flux density in the separation zones. All magnets are located below the shaft 5. The unloading element 3 of the concentrate is placed above the loading element 2 and is made in the form of trays 13 located between the reels and equipped with flushing nozzles 14 directed to the working surfaces 8 and 9 of the working drums.

Description

The utility model relates to devices for separating materials by magnetic properties and can be used in the enrichment of iron ores.

A known magnetic separator comprising a housing, loading and unloading elements of the concentrate and tailings, a shaft attached to the housing, rotatably mounted on the shaft made of non-magnetic material relative to it and hollow drums fastened to each other by non-magnetic hollow inserts located inside the drums and bonded to the shaft perpendicular to the latter non-magnetic sectors, fixed to the sectors permanent magnets with the same magnetic polarity, moreover, magnets in adjacent sectors are displaced relative to each other in the direction of rotation of the drums [1].

An advantage of the known magnetic separator is the increased working contact area of the separated product with the working surface of the separator, which ensures its increased productivity.

However, the known device has the following disadvantages:

- the inability to use a separator for the separation of magnetic material supplied in the form of pulp;

- the impossibility of regulating the quality of the concentrate in the separation process;

- insufficient extraction of the magnetic product.

The technical result, to which this technical solution is directed, is to increase the performance of the separator while improving the quality of the magnetic product when working in wet mode.

This result is achieved due to the fact that in the magnetic separator including the housing, loading and unloading elements of the concentrate and tailings, a shaft attached to the housing, rotatably mounted on the shaft made of non-magnetic material and hollow drums fastened to each other by non-magnetic hollow inserts with working surfaces located inside the drums and fastened to the shaft perpendicular to the latter non-magnetic sectors, permanent magnets fixed to the sectors, counter the positive poles of each of which are placed on a line parallel to the axis of the separator shaft, moreover, the poles of the magnets facing the surface of adjacent drums have opposite polarity, the magnets are located below the shaft, and the centers of the respective adjacent magnetic poles are located on the same line, and the concentrate discharge element placed above the boot element, and sequential magnets of each of the drums are made with alternating magnetic polarity.

This result is also achieved due to the fact that the discharge element of the concentrate is made in the form of trays located between the drums, equipped with flushing nozzles directed to the surface of the working drums.

Figure 1 presents a General view of the device, figure 2 is a section aa

The magnetic separator includes a housing 1, a loading 2 and an unloading 3, 4 elements of concentrate and tailings, a shaft 5 bonded to the housing 1, rotatably mounted on the shaft made of non-magnetic material and fastened to each other by non-magnetic hollow inserts 6 hollow drums 7 sec work surfaces 8, 9. Housing 1, hollow inserts 6 and hollow drums 7 form a bath 10 for the pulp to be magnetically separated. Non-magnetic sectors 11 are placed inside the drums 7 and fastened to the shaft 5 perpendicular to the latter. Permanent magnets 12 are mounted on sectors 11 with alternating magnetic polarity in the direction of rotation of the drums and the same orientation in adjacent sectors. The opposite polarity of the magnets facing the working surfaces of 8 and 9 adjacent drums, provides increased magnetic flux density in the separation zones. All magnets are located below the shaft 5. The unloading element 3 of the concentrate is located above the loading element 2 and is made in the form of trays 13 located between the drums and equipped with flush nozzles 14 directed to the working surfaces 8 and 9 of the working drums.

Magnetic separator operates as follows.

Subject to magnetic separation, the pulp enters through the loading element 2 and fills the bath 10, including the separation zone 15 between the side surfaces 8, 9 of the drums. Under the action of permanent magnets, magnetic particles are attracted to the outer surfaces 8, 9 of the rotating drums 7 and are moved to the discharge element 3 of the concentrate. High magnetic field allows for increased extraction of magnetic material from the pulp

to the concentrate, and the movement of relatively successive magnets with alternating magnetic polarity promotes multiple magnetization reversal and purification from non-magnetic impurities, that is, it allows to improve the quality of the concentrate.

In the zone of the unloading elements 3 of the concentrate, the product is washed off into the trays 13 under the action of the flushing nozzles 14 directed to the working surfaces 8, 9 of the drums 7. Non-magnetic products are discharged through the unloading elements 4 of the tails.

The separator provides the ability to change the rotational speed of the drum drive (the drive is not shown in the drawing), which ensures optimal separation modes for maximum extraction of a magnetic product of a given quality.

Thus, this technical solution will allow:

- use a magnetic separator for working with pulps;

- increase the extraction of magnetic material in the concentrate;

- increase the performance of the separator;

- improve the quality of the concentrate.

The source of information.

2. US Patent No. 4166789, NKI 209/219, 1979

Claims (2)

1. Magnetic separator, comprising a housing, loading and unloading elements of the concentrate and tailings, a shaft attached to the housing, rotatably mounted on the shaft made of non-magnetic material relative to it and hollow drums fastened to each other by non-magnetic hollow inserts placed inside the drums and non-magnetic sectors fastened to the shaft perpendicular to the latter, permanent magnets of the same magnetic polarity fixed to the sectors, the magnets being adjacent x sectors are displaced relative to each other in the direction of rotation of the drums, characterized in that the magnets are located below the shaft, and the centers of the corresponding adjacent magnetic poles are located on the same line, the discharge element of the concentrate is placed above the loading element, and the successive magnets of each of the drums are made with alternating magnetic polarity. 2. The magnetic separator according to claim 1, characterized in that the concentrate discharge element is made in the form of trays located between the drums, equipped with flush nozzles directed to the surface of the working drums.