SU1558481A1 - Magnetic system for drum separator - Google Patents

Abstract

The invention relates to the beneficiation of minerals and can be used in the technology of processing magnetite ores. The goal is to increase the separation efficiency. For this, the permanent magnets 1 and 2 of alternating polarity are set in rows inside the separator drum along its circumference on the frame with gaps 4 to each other equal to 2.0-2.5 of the width of the magnet. Magnets 1 and 2 create an uneven magnetic field with an interval from 60-80 to 15-20 kA / m. The original magnetite product containing nonmetallic opened grains and splices, having fallen into the zone of action of magnets 1 and 2, is subjected to repeated exposure to strong and weak fields. As a result, the adhesion strength of magnetic flocs periodically weakens, which contributes to a more selective release of magnetite minerals. Effective removal of the magnetic fraction from the separator occurs due to the location without gaps of the extreme rows of magnets in the zone of unloading of the magnetic fraction. 3 il.

Description

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The invention relates to devices in the field of mineral processing and can be used in the technology of processing magnetite ores.

The purpose of the invention is to increase the separation efficiency.

FIG. 1 shows a magnetic system map; in fig. 2 shows section A-A in FIG. 1 (placement of magnets around 80 kA / m) and weak (15-20 kA / m) fields. As a result, there is a periodic weakening in the adhesion strength of magnetic flocs, which contributes to more than 5 selective extraction of magnetite materials, especially in the final technological operations, causing an increase in the quality of the concentrate.

Effective removal of the magnetic fraction from the separator bath takes place the drum blanks with gaps equal to

2.0-2.5 V); in fig. 3 - section BB on 10 Goadar location without gaps extreme FIG. 1 (location of magnets in the end faces of the magnets in the zone of unloading of the magnetic part of the system). Fraction. Establishment without gaps The magnetic system contains constants at a 3-time alternation of unipolar magnets 1 and 2, respectively, from northern magnets in the radial arrangement of the is and southern polarities, rigidly fixes the scattering of magnetic force lines on the romme 3 with interpolar zazo-lines.

frame 4, equal to 2.0-2.5 V (B is the width of the magnet).

Magnetic separator system works as follows.

Claims (1)

Invention Formula Magnetic drum separator system, including those installed inside The magnets 1 and 2 of the drum located on the 3 rd on the rm with a gap between each other and the interpolar gaps 4 create non-rows of permanent magnets with an alternating uniform magnetic field with an interval of polarity around 60-80 to 15-20 kA / m. Having fallen into a zone, it is different in that the operation of such a system, the initial magnetically-enhanced separation efficiency, the step The product containing non-metallic magnet distributions around the circumference of the buried grains and intergrowths is subjected to a monoton made with an interval equal to to the strong impact of strong (60-2.0-2.5 width of the magnet. Aa Fie.2 80 kA / m) and weak (15-20 kA / m) fields. As a result, a periodic weakening of the adhesion strength of the magnetic floccules occurs, which contributes to a more selective extraction of magnetite materials, especially in the final technological operations causing an increase in the quality of the concentrate. Effective removal of the magnetic fraction from the separator bath occurs due to the location without gaps of the extreme rows of magnets in the zone of unloading of the magnetic fraction. Establishment without gaps in the case of 3-time alternation of single-pole magnets in the radial arrangement excludes scattering of magnetic field lines. Invention Formula ЈjL &