SU770514A1 - Magnetic slime-removing apparatus - Google Patents

Description

The invention relates to the enrichment of iron ores and can be used in the desliming and thickening of micronized magnetite ores. five

Known magnetic declamator containing a metal vat with a drain chute located in the upper part of it, a damper and a magnetizing apparatus £ 1]. YU

The performance of the famous declamator is insufficient.

The purpose of the invention is to increase iron growth by. the output of the declarator 15 by reducing its content in the discharge of the declarator.

This is achieved by the fact that the magnetic deslamator additionally contains permanent magnets (electromagnets of direct current) that are installed in the zone of the clarified liquid between the damper and the annular discharge chute. In this case, the permanent magni-. You (DC electromagnets) are installed at a distance of 40-70 meters from the drain threshold of the annular gutter and are separated from each other at a distance that provides for a magnetic field between them no less than 500 O · 30

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Fig, 1 shows a magnetic declamator, a general view; in fig. 2 - the same. View from above.

The magnetic separator consists of a metal tank 1, in the upper part of which there is an annular chute 2 with a drain threshold 3. The pulp through pipe 4 enters the damper 5, the output of which is equipped with a magnetizing device 6. In the clarified layer between the stabilizer 5 and the annular chute 2 additional magnets (DC electromagnets) 7.

The device works as follows. ,

The magnetite pulp entering through the tube 4 passes through the damper 5 and the magnetizing apparatus 6. At the output of the magnetizing apparatus b, the magnetite particles with a particle size of + 0.074 mm become larger (the flocculation process occurs) and descend to the bottom of the date of the material. However, with a significant content of magnetite particles with a particle size of 0.074 km in the initial supply, not all particles have time to be magnetized, which leads to a high content of magnetite in the clarified Layer of the declamator. Passing between extra mustache "• g ·

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Permanent magnets (direct-current electromagnets) 7 permanently magnetised across the entire cross-sectional plane of a desllamator, the magnetite particles flocculate and settle to the bottom of the advertiser. At the same time, the process of additional flocculation of finely divided magnetite particles is promoted by a significant cross-sectional area of the deschlamator, relatively small speeds of the ascending flows, as well as a significant dilution of the pulp in the clarified zone and high magnetic field strength of the additional magnets 7.

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Claims (3)

Claim 1. Magnetic declarator containing a tub with an annular drainage chute at the top and a damper characterized by the fact that, in order to increase the increment of iron in the concentrate due to a decrease in its content in the discharge, the magnetic separator is additionally equipped with a magnetic system installed in the upper * The parts of the tank between the pacifier and the annular drainage chute. 2. Magnetic declarator on π. 1, characterized in that the magnetic system is installed below the bottom _P _ the edges of the annular overflow gutter. 3. Magnetic declamator on PP. 1 and 2, characterized in that the elements of the magnetic system are installed, 5 of us from each other at a distance.