SU1437088A1 - Magnetic separator - Google Patents

Abstract

The invention relates to mineral processing equipment and is intended for use in the coal industry. The purpose of the invention is to increase the separator's performance without increasing the magnetite loss in installations for enriching coal in magnetite suspension. The partition 3 separates the bath (B) 2 into the tail 4 and the drain 5 compartments communicating with each other through the upper drain threshold 6. The axis of the magnetic drum (B) installed in the bath 2 with the magnetic system is located at the same level with the latter. On the side walls B2, with a gap in relation to the hubs of covers B, sealing boards 7 are installed. The latter and - side walls B2 are adjacent to the groove (g) 10 at an angle to the vertical to remove the suspension. The lower ends 11 10 10 are adjacent to the partition 3, made in the places of the junction Ж 10 with openings corresponding to the cross-section 10. 10. K B 2 at - and (L

Description

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closes the receiving chamber 1; the suspension from chamber 1 enters the gap between B2 and B. The magnetite particles are attracted to B. They are removed from B2 and removed from the separator. The suspension passes through the gap and is distributed

into three streams About the first stream of Chers: threshold 6 and the second through the gaps between the hubs of the lids and 1h 1, 7 and Ж 10 enter the drain section B 2, the third is removed to the sludge septic tanks about 3 sludge.

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The invention relates to equipment for the enrichment of minerals and is intended for use in the coal industry in the enrichment of coal in magnetite suspensions.

The purpose of the invention is to increase the separator productivity without increasing the loss of magnetite in installations for enriching coal in magnetite suspension.

FIG. 1 shows a schematic of a 1ST separator; Fig. 2 shows a section A-A in Fig. 1 (relative position of the hub of the drum cover and the sealing shield); in fig. 3 - gutter junction with a partition.

The separator consists of a receiving chamber 1, a bath 2 with a partition 3, which divides the bath into tail 4 and drain 5 compartments. These compartments communicate with each other through the upper drain threshold 6 of the partition. The axis of the magnetic drum is flush with the drain. The sealing pads 7 are installed on the side walls 8 of the bath with a gap in relation to the hubs 9 of the drum cap. Chutes 10 adjacent to the sealing shields and side walls of the bath are angled to the vertical. The lower ends of the 11 grooves adjoin the partition wall, which, in conjunction with the grooves, is made with an opening 12 along the groove section. To remove the magnetite extracted by the drum, a scraper 13 is installed (the drive is conventionally not shown).

The separator works as follows.

The magnetite suspension is fed into the receiving chamber 1, from which it enters the gap between the tray van 0

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us 2 and magnetic drum. The magnetite particles are attracted to the drum, removed from the bath 2, and removed from the separator through the scraper 13. The suspension passes through the gap between the tray and the drum and is divided into three streams. The first stream through the drain threshold enters the drain compartment of the bath 2, the second stream through the gaps between the sealing boards 7 and the hubs 9 and the groove 10 also enters the drain compartment of the bath These streams form a common drain of the separator, which in the coal preparation plants is directed to the screen. The third stream is removed from the separator through tailings located at the bottom of the separator. In coal processing plants, this part of the slurry enters the spam sumps and forms regeneration waste

Compared with the known separat- Topotf, in which a part of the flow is suspended

The suspensions passing through the gaps and chutes are removed with regeneration waste (for example, in the EBM-80 / 170P separator 30 m / h is removed through tailing nozzles, and 10 m / h through chutes, - a suspension is removed (40)) in the proposed separator with regenerant waste, only 30 m / h of suspension is removed, since the remaining 10 enter the separator drain.

5 and do not fall into waste, Toe. loss of magnetite with waste is reduced by 25%. In addition, the application of the invention allows to improve the performance of the separator while maintaining the same

0 loss of magnetite Since the loss of magnetite is approximately proportional to the performance, with an increase in productivity of 1.3

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The magnetite loss times in the proposed separator only through the tailings will be approximately the same as in the known separator through the tailings and grooves.

Claims (1)

Invention Formula Magnetic separator containing a receiving chamber, a bath divided by a partition into tail and drain compartments, which are interconnected through the upper drain threshold of the partition, installed a drum in the bath with a magnetic system, the axis of which is located flush with the drain threshold, sealing panels installed inside baths on / I- A at FIG. its side walls with an overhang with respect to the hubs of the drum caps, close to the sealing and side walls of the bath of the gutter to remove the suspension that has passed through the gaps between the hubs of the drum caps and the sealing boards, and the drive characterized in that, in order to increase the separator performance without increasing the magnetite loss in the coal preparation plants in the magnetite suspension, the troughs are located on the side the bath walls at an angle to the vertical and with their lower ends adjoin the bath partition, and the partition in the places of interface with the grooves is made with holes corresponding to cross section gutters. cpusj