SU1567270A1 - Apparatus for magnetic separation of ore pulps - Google Patents

Abstract

This invention relates to magnetic separation. The goal is to improve the quality of the magnetic product and reduce the energy intensity and metal intensity of the structure. The device contains a tray 1 with a magnetic system in the form of a magnetic hard tape 2, which covers the bottom of tray 1 and is made with alternating polarity poles along tray 1. A tray 1 of the magnetic product remover is made in the form of scraper (C) 3 conveyors (K) 4 C 3 of magnetic hard tape with alternating polarity poles in height C 3 is made. Transverse to tray 1 C 3 are offset from each other and cover all its cross section. The drive drum 5 K 4 is kinematically connected with the paddle wheel 6 located in tray 1 between the drum 5 and the feeder 7. Above the capacitance 11 for the magnetic product is an electromagnet 12. In the walls of the tray 1 there are holes 9 and a slurry pipe for dumping tails. The pulp is fed by the feeder 7 and rotates the wheel 6, and from it the drum 5. It moves C 4. The pulp circulates between C 3 and drains through the pulp line into the tails. Magnetic particles adhere to C 3. Due to the alternation of the polarities of the poles along tray 1 and the height of C 3, alternate attraction and pushing of C 3 from the bottom of tray 1 takes place. The pulp oscillates, which promotes the release of trapped non-magnetic particles. As the magnetic product accumulates on C 3, the electromagnet 12 is turned on and the magnetic product is unloaded into the container 11. 2 Il.

Description

The invention relates to the separation of a material according to magnetic properties and can be used for finishing magnetic separation concentrates and for magnetic separation of weakly magnetic ores.

The purpose of the invention is to improve the quality of the magnetic product and reduce the energy intensity and metal intensity of the structure.

FIG. 1 shows a separator, section 1; FIG. 2 - the same, top view. The device comprises a tray 1 with a magnetic system in the form of magnetic tape 2, which covers the bottom of the tray and is made with alternating poles along the tray. Above the bottom of the tray 1 with a small gap are the scrapers 3 of the conveyor 4, in the form of which a magnetic particle remover is made. The drive drum 5 of the conveyor 4 is kinematically associated with the impeller 6 located in the tray 1 between the feeder 7 and the drum b. Under the discharge drum 8, in the side walls of the tray 1 there are holes 9 and a slurry pipe 10. Above the capacity 11 for the magnetic product is located an electromagnet 12. The scrapers 3 are made of magnetic hard tape with alternating polar poles along the height of the scrapers 3.

The scrapers 3 are alternately displaced relative to each other across the tray and cover all its cross-section.

The device works as follows.

The pulp from the feeder 7 enters the impeller 6 and then circulates between the scrapers 3 of the conveyor 4 and through the openings 9 and the pulp line 10 merges into the tails. During the movement of the pulp between the scrapers 3 of the conveyor 4, the magnetic field of the elastic magnetic hard tape 2 and the magnetic field of the scrapers 3 acts on the pulp. Magnetic particles stuck to the particles of waste rock constantly touch the surface of the elastic magnetic hard tape 2 or the surface of the scrapers 3 of the conveyor 4. Scrapers 3, interacting with an elastic magnetic hard tape 2 with multipolar magnetization, then being attracted to it, then repelled from it, resulting in magnetic particles stuck to the scrapers 3 of the IR

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tape 2, pulp oscillations are experienced. Under the action of pulp oscillation, turbulent flow motion, and magnetic forces, particles of the waste rock are separated from the magnetic particles and, together with the pulp, merge into tails. The removal of magnetic particles from the pulp is facilitated by the fact that they come into contact directly with the sources of the magnetic field during the entire time they move along tray 1.

The displacement of parallel scrapers 3 between each other with the possibility of mutual overlapping of the cross section of tray 1 increases the turbulence of the pulp movement, facilitates the removal of magnetic particles from the bottom of the tray 1 and increases the duration of the effect of the magnetic field on the pulp. During the movement of the pulp in tray 1, the magnetic particles manage to attract the source of the magnetic field and separate from the waste rock under the action of vibrational vibrations and turbulent movement of the pulp, since the length of the tray is unrestricted. The distance from the edge of the conveyor belt 4 to the scraper 3 depends on the performance of the device and the speed of movement of the scrapers 3 from such a calculation that the pulp level in tray 1 does not rise above the lower conveyor belt 4.

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The speed of movement of the scrapers 3 depends on the gear ratio of the V-belt transmission, by means of which the impeller 6 transfers the energy of the pulp to the driving drum 5 of the conveyor 4. As a result of the movement of the conveyor belt 4 with the scrapers 3, magnetic particles are removed from the tray. When a certain amount of magnetic particles accumulate on the scrapers 3, the electromagnet 12 is turned on. Due to the fact that the intensity of the electromagnet 12 is higher than the intensity of the magnetic field of the scraper 3, the magnetic particles are transferred from the scraper 3 to the electromagnet 12. As the windings of the electromagnet 12 enter Since the alternating electric current and the electromagnet 12 are turned on periodically, the magnetic particles mainly fall into the capacitance 11 for the finished product. Those magnetic particles that managed to attract from the electromagnet 12. to scrub

The speed of movement of the scrapers 3 depends on the gear ratio of the V-belt transmission, by means of which the impeller 6 transfers the energy of the pulp to the driving drum 5 of the conveyor 4. As a result of the movement of the conveyor belt 4 with the scrapers 3, magnetic particles are removed from the tray. When a certain amount of magnetic particles accumulate on the scrapers 3, the electromagnet 12 is turned on. Due to the fact that the intensity of the electromagnet 12 is higher than the intensity of the magnetic field of the scraper 3, the magnetic particles are transferred from the scraper 3 to the electromagnet 12. As the windings of the electromagnet 12 enter Since the alternating electric current and the electromagnet 12 are turned on periodically, the magnetic particles mainly fall into the capacitance 11 for the finished product. Those magnetic particles that managed to attract from the electromagnet 12. to scrub

chambers 3 are involved in the further process of extracting and separating particles.

Claims (1)

Invention Formula A device for magnetic separation of ore pulps, including a non-magnetic tray with a magnetic system, a magnetic particle extractor located above it in the form of a scraper conveyor, a feeder and a receiver for separation products, characterized in that, in order to improve the quality of the mag 672706 product and reduce the intensity and metal consumption of the structure, the conveyor scrapers are made of magnetically hard tape with alternating polarity poles along the height of the scrapers and located displaced relative to each other across the tray, and the magnetic system is filled in the form of a magnetic hardband that is located at the bottom of the tray and has an alternating polarity of the poles along the tray. -H