SU1641431A1 - Magnetoelectric drum separator - Google Patents

Abstract

This invention relates to magnetic separation of weakly magnetic ores. The purpose of the invention is to increase the recovery of weakly magnetic particles and improve the discharge conditions of the magnetic product. Inside the non-magnetic rotating drum (B) 1 there is an annular magnetic system of permanent magnets (M) 2, mounted on an annular elastic base. On the fixed shaft 18, the levers 10 are fixed. They have the ability to adjust their angle of inclination to the horizon. Between the arms 10, a series of rollers 9 are rotated around horizontal axes. The rollers 9 are located between the inner surface of B 1 and M 2. Two electrodes 11 and an additional electrode (DE) 12 are fixed at the bottom of the bath. DE 12 is located on both sides of the tailings receiver 7 and repeats the shape of the bottom. To the source 15 of the voltage, DE 12 is connected via the voltage regulator 14. The B 1 is connected to the negative pole of the source 15, and the electrodes 11 and DE 12 are connected to the positive pole. The pulp 6 is fed to the surface B 1. The nonmagnetic product flows into the receiver 7. Magnetic particles are attracted to B 1 by M 2, sec.

Description

The invention relates to the enrichment of minerals and can be used in the mining and other industries of the national economy.

The purpose of the invention is to increase the recovery of weakly magnetic particles and improve the discharge conditions of the magnetic product.

The drawing shows a separator, a general view.

The separator includes a non-magnetic drum 1 inside which there is an annular magnetic system made of permanent magnets 2 of trapezoidal shape, laid with large bases on the inner surface of drum 1, and the smaller bases of magnets 2 are fixed on the annular elastic base 3 (for example, vulcanization with elastic rubber) pressed against the inner surface of drum 1 by spring-loaded rods 4, slurry pipe 5 with slot-hole feeder 6, receivers 7 and 8 of separation products, moving the magician away from the surface of drum 2 The overall system, the longitudinal rotating rollers 9, fixed in the levers 10, whose position can vary relative to the horizontal plane, electrodes 1.1 and 12, conductivity sensor 13, voltage regulator 14, electrical voltage source 15, insulating electrode holder 16 (bottom of the bath) , squirting 17 and a stationary shaft 18. The drum 1 is mounted in a bath so that it can rotate around a fixed axis — shaft 18. At the bottom of the bath, repeat its shape, an additional electrode 12 is laid on both sides of the receiver 7. The rollers 9 pass between the inner light on the internal surface of the drum 1 and the annular magnetic system.

The separator works as follows.

The initial fine ore in the form of pulp is fed through a slit feeder 6 to the surface of the drum 1 rotating with the magnetic system and magnetic particles are attracted to the surface of the drum 1 by the action of a magnetic field. Weakly magnetic particles flow along the surface of the drum 1 and fall onto the surface of the electrode holder 16. Under the influence of electric current between the rotating drum 1 and the electrodes

11, installed in two rows along the entire length of the drum 1, the iron-containing particles in the pulp increase their magnetic susceptibility and are attracted to the surface of the drum 1, and the presence of electric

0 the field between the drum 1 and the additional electrode 12 contributes to the retention of iron-containing particles on the surface of the drum 1. The magnitude of the electric field between the drum 1 and the electrode 12, depending on the electrical conductivity of the source material, is controlled by the voltage regulator 14 and the slurry conductivity sensor 13 .

In the zone of unloading of iron

By the material 0, the magnets 2 are separated from the inner surface of the non-magnetic drum 1 by longitudinal rotating rollers 9 fixed in levers 10 mounted on the front sides of the drum 5 ne 1. The position of the levers 10 with the rollers 9 relative to the horizontal plane may change with subsequent fixation on the stationary shaft 18.

The separation of the magnets 2 in the discharge zone

0 from the inner surface of the non-magnetic drum 1 leads to a significant decrease in the magnetic field, which helps to reduce the holding force of iron-containing particles of magnetite and hematite sticking to the drum 1, and they are washed off with water through splashes 17 into the receiver 8. Leaving a part of the pulp that does not react to and the electric field flows down the electrode holder 16 into the receiver 7.

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Claims (1)

DETAILED DESCRIPTION OF THE INVENTION A drum-type magnetoelectric separator comprising a non-magnetic drum installed in a bathtub with possible 5 rotation around a fixed axis. permanent magnet magnetic system installed inside the drum, electrodes placed in the bath, connected to a voltage source, feeder, collection for unloading the products of the section, pressed to the inner surface of the dumplings and receivers of the tails and the concentrator with spring rods, and the adapters, characterized in that. for the purpose of unloading concentrate enhancement of the extraction of weakly magnetic implemented in the form of two particles and improving the unloading conditions 5 of the fixed axis of the levers, between which a magnetic product, it is equipped with springs, there are a number of rollers, each with beater bars, with a voltage regulator and connected with it an additional rotation around the horizontal axis. at the electrode located at the bottom of the bath, the levers are installed with the possibility on both sides of the tailings receiver and 10 changes in the angle of inclination to the horizon, and those reproducing the shape of the bottom, and the ring-shaped faces are located between the inner base of elastic material. the top of the drum and the ring on which the constants are fixed by a magnetic-magnetic system.