SU1505590A1 - Electromagnetic separator for dressing low-magnetic materials - Google Patents

Abstract

The invention relates to the separation of materials according to magnetic properties and is intended to enrich low-magnetic materials. The goal is to increase the efficiency of the enrichment process by increasing the time that magnetic particles are in a magnetic field. The ferromagnetic rotor 1 of the separator is installed vertically and the lower part is immersed in an inclined chute 2 mounted with the possibility of changing the angle of inclination. The lower part of the rotor 1 and the chute 2 are covered by a magnetizing coil 3. A flushing device 4 is installed above the rotor 1, and a magnetic product receiver 5 inside the rotor 1. The rotor 1 is made of rings having radial triangular profile. The tops of the triangular flange of adjacent rings are set against each other without a gap. The rings consist of ferromagnetic sectors 9 connected by non-magnetic spacers 10. Adjacent triangular hollows of the rings form channels for the passage of the pulp. The pulp is fed into the chute 2. A part of the rotor 1 located inside the coil 3 passes through the main magnetic flux. A high gradient magnetic field is created on the tips of the lips. The magnetic particles are attracted to the ribs and carried by the rotation of the rotor 1 into the discharge zone. By equalizing the speed of the pulp and the speed of rotation of the rotor 1, the time spent by the magnetic particles in the magnetic field increases. 2 hp f-ly, 3 ill.

Description

The invention relates to the field of separation of materials in magnetic C13 ores and can be used in the enrichment of low-magnetic ores,

The goal of the invention is to increase the efficiency of the enrichment process by increasing the time the magnetic particles are in a magnetic field.

FIG. 1 shows a separator, a general view; FIG. 2 is a section A-A in FIG. 1; FIG. 3 is a section BB in FIG. 1.

The electromagnetic separator consists of a rotor 1 immersed in the chute 2, through which pulp is fed. Rotor 1 In this separator performs the functions of a magnetic circuit, as well as a working body, which carries the magnetic particles from the chute to the upper part, where they are unloaded.

Changing the position of the groove 2 relative to the horizontal plane, performed by rotating it about the axis, allows the flow rate of the pulp to be adjusted. A coil 3 is worn on the rotor 1 rings. This arrangement of the rotor 1, chute 2 and coil 3 makes it possible to create in the place of immersion of the rotor 1 in the pulp an area with a high magnetic field gradient. 5, which, like chute 2, are made of a non-magnetic material to prevent sticking of magnetic particles. The rotor 1 is held in a vertical position by means of rollers 6. The rotor consists of rings 7 with double-sided radial grooves of a triangular profile. The rings are interconnected so that adjacent triangular protrusions with their vertices touch each other and form rectangular channels. The cross section of these channels is shown in FIG. 3, At the bottom of the gutter 2

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a threshold is set 8. Rings 7 are made of ferromagnetic sectors 9 connected by non-magnetic spacers 10,

The separator works as follows.

Before feeding the enriched material in the form of pulp into the chute 2, a current is passed through the coil 3, which creates a magnetic flux in the rotor 1, and the rotor 1 is hidden along the flow of the pulp. The part of the rotor 1, which is located inside the magnetizing coil 3, passes through itself the main magnetic flux, which in the places of the ribs, namely in the triangular grooves, forms a high magnetic field gradient, where the magnetic force is concentrated.

The original product, consisting of magnetic and non-magnetic particles diluted with water, is fed as a pulp into chute 2. In chute 2 there is a threshold 8, which prevents the solid particle from passing through the bottom of chute 2 and not falling into the channel formed by rings 7, where the process of enrichment of weakly magnetic particles takes place. In the separator, the speed of rotation of the rotor and the rate of flow of the pulp are equalized. The equalization of these speeds is carried out by changing the speed of rotation of the rotor 1 by means of an engine for driving as a whole, as well as by changing the flow rate of the pulp by changing the angle of inclination of the groove 2,

Immersed in the pulp, the rectangular channel is filled with a certain volume. By equalizing the relative velocities of the pulp and concentrates of high-gradient magnetic fields, a condition is reached in which only magnetic forces act on the particle. Therefore, the magnetic particles are collected in the radial corrugations and found to be 15

with ts nj chute 2, the upper part of poTop T, f AP magnetic c-tsl, h is practical oTCVTCTi yPT, since non-magnetic gaskets 10 on the rings 7 interrupt the magnetic 1st flow. The t-farnnTH ix is removed in this zone by a flow of water. The washed channels vnon immersed in the nyjii ny and remove the non-portion of weak product / product.

Decreasing the pulp flow rate and rotor rotation increases the time the magnetic field exerts on a solid particle, and as a result, the extraction of weakly magnetic particles increases.

Formula

gaining

one . Electromagnet retarder for enriching low-magnetic materials, including a rotor made of ferromagnetic material, magnetizing coil, feeder, flushing device and receivers of products

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separation, that, for the purpose of), of the efficiency of the enrichment process, it is equipped with inclined iron1M1, the rotor is made of rings with two-sided) P1mn radial section of the triangular profile, the turntable is mounted and immersed with its lower part into the groove, the magnetizing coil enclosing the rotor and the groove at the immersion point of the rotor, while the tops of the triangular diagrams of the adjacent rings are set against each other without a gap, and the adjacent triangular cavities form channels for the pulp to pass through.

2. Separator p (1 p. 1), characterized in that the rings are made of ferromagnetic sectors connected by non-magnetic gaskets.

3. Separator according to claims 1 and 2, about t — l and h a and y so that the chute is installed with the possibility of changing the angle of inclination.

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(Rig.3

Claims (3)

Claim 1. An electromagnetic separator for 20 enrichment of weakly magnetic materials, including a rotor made of ferromagnetic material, a magnetizing coil, a feeder, a flushing device and receivers of 25 separation products, so as to increase the efficiency of the enrichment process, it is equipped with an inclined trough, the rotor is made of rings with bilateral radial arrivals of a triangular profile, mounted vertically and immersed with its lower part in the trough, and the magnetizing coil covers the rotor and the chute at the place of immersion of the rotor in it, while the vertices of the triangular arches of adjacent rings are set against each other without a gap, and the adjacent triangular depressions form the cynals for the passage of pulp. 2. The separator according to claim 1, characterized in that the rings are made of ferromagnetic sectors connected by non-magnetic gaskets. 3. The separator according to claims 1 and 2, on τη and especially with the fact that the trough is installed with the possibility of changing the angle of inclination. bb Fig. 3 shigg