SU722577A1 - Magnetic separator - Google Patents

Description

one

This invention relates to the beneficiation of minerals, in particular magnetic enrichment.

A magnetic separator is known which includes a rotating non-magnetic drum with a magnetic system inside, a bath of non-magnetic material with feed and discharge chutes and drainage thresholds W.

The disadvantage of this separator is c. low efficiency of work on pulps with a high content of rock slimes.

A magnetic separator for wet enrichment of finely ground highly magnetic ores is known, including a nonmagnetic drum with a magnetic system located in it, a bath of nonmagnetic material, a sludge chamber with a drain threshold consisting of separate compartments and equipped with a device for unloading sludge programmers, receivers of separation products

The disadvantages of this separator are low separation efficiencies and separation selectivity due to the mixing of the slimey circulating product with the initial feed in the separation zone, as well as the instability of the separation mode.

The purpose of the invention is to increase the efficiency of the separation process by preventing the influence of the intra-chamber circulation of the product on the quality of the concentrate.

Claims (4)

The goal is achieved by the fact that the bath is equipped with partitions installed along the drum rotation with the formation of compartments, while part of the compartments are connected by means of nozzles for intracameral circulation with a sintering chamber equipped with sprinklers installed at the bottom . At the same time, nozzles for intracameral circulation are made in the form of closed chutes, the lids of which are foldable to the bottom of the bath, and the bottom of the chutes are made of a magnetically soft material. FIG. 1 schematically shows the proposed separator, a general view; in fig. 2 - a separator bath with a chamber for wishing whether baths without a drum, top view. The magnetic separator includes a non-magnetic drum 1 with a magnetic system 2 located in it, a semi-current type bath 3 of a non-magnetic material, which is divided into compartments for the main 5 using partitions 4 of a non-magnetic material (for example, rubber). and control 6 separation. The compartments of the main separation bath are connected to a separator feeder (not shown in the figures) using pitix trays 7 "The compartments for the control separation are connected to the chamber 9 of the waste slag by means of nozzles 8 inside the chamber circulation 9, the patches are made in the form of closed grooves which are combined with the bottom of the bath. The bottom of the bath, the separator and the side walls of these grooves are made of non-magnetic material, and the bottom of them is made of magnet GZ: a second material. The separator bath has separation receivers; 10 for quosts and 11 for concentrate. The concentrate receiver is installed above the overflow threshold 12 of the willow concentrate chamber, to desliming consists of separate compartments formed by using partitions 13 and equipped with sprinklers 14 installed on the bottom, and a device 15 for unloading sediments made in the form of a siphon. The separator works as follows. Food in the form of pulp through the feeder and the feed streams 7 enters the bath 3 in the compartments for the main 5 separation. Under the action of a magnetic field of a magnetic system 2, the material is divided into a magnetic product — a concentrate and a nonmagnetic tail. The tails are discharged through the receiver 1O and sent to the dump, and the magical product is carried out of the bath 3 by means of a rotating drum 1 and is loaded through the concentrate receiver into the obshpamping chamber 9, where the particles and floccules, like the heaviest, settle to the bottom . Under the action of the water jets fed into the chamber 9 774 by squirting 14, the settled material is rummaged and cleaned from sludge and fine grains of rock. With the aid of syphoa 15, the sediment is discharged from chamber 9 and sent to further processing. The llamas are transported upwards and unloaded through the overflow threshold 12 into the inner chamber circulation nozzles 8, where they are magnetized using a magnetic system 2 and then enter the bath 3 into the compartments for control 6 separation. In these compartments, under a magnetic field of the magnetic system 2, the magnetized sludge is cleaned, magnetic particles are separated from them, which are removed from the bath 3 by means of the rotating drum 1 and discharged through the receiver 11 of the concentrate into the chamber 11 of the sludge. The non-magnetic part of the slots, as well as the dump product of the main separation compartments, is discharged through the tailings receiver 10. Such an implementation of the separator allows to increase the efficiency of the separation process. Claim 1. Magnetic separator for wet enrichment of finely ground highly magnetic ores, including a non-magnetic drum with a magnetic system located in it, a bath of non-magnetic material, a dewatering chamber with a drain threshold, consisting of separate compartments and equipped with a device for unloading sludge, intracameral circulation of the product, feeder, receivers of separation products, characterized in that, in order to increase the efficiency of the separation process by preventing the influence of the utricameral circulation of the product on the quality of the concentrate, the bath is equipped with partitions installed along the drum rotation to form compartments, while part of the compartments are connected by means of branch pipes for intracameral circulation with the chamber to slime. . 2. A separator according to any one of the preceding paragraphs, 1, and so on, so that, in order to stabilize and discharge the concentrate, the de-sludge chamber is equipped with sprinklers mounted on the bottom, and the sludge discharge device is siphoned. 3. A separator according to claim 1, characterized in that the nozzles for intra-chamber circulation are made in the form of closed chutes, the lids of which are aligned with the bottom of the bath. 4. The separator according to claim 3, is distinguished by the fact that the bottom of the grooves is made of a magnet of a soft material. Sources of information taken into account in the examination 1. Derkach V. G. Special methods of mineral processing, M., Nedra, 1966, p. 145. 2. USSR author's certificate number 473524, cl. In OZ From 1/10, 1970. the xSocmti // KoHuftHirwajnFig. f.