SU1651962A1 - Magnetic separator - Google Patents

Abstract

The invention relates to the enrichment of minerals, in particular, to designs of volume-gradient magnetic separators with a superconducting magnetic system. The purpose of the invention is to increase the separation efficiency by creating optimal conditions for the deposition of ferromagnetic particles throughout the entire volume of the working chamber. The magnetic separator contains a multi-pole magnetic system 1 located on the outer side of the rotor 11 with working chambers 2 arranged around the perimeter. In the chambers 2 parallel to the poles of the magnetic system 1, precipitating surfaces are formed to form channels for the passage of pulp. In chambers 2, the width of the channel formed by adjacent precipitation surfaces is inversely proportional to the distance from the poles to the channel axis. The pulp is fed from the feeder to chambers 2. Depending on the magnitude of the induced current on both sides of the magnetic system 1, a magnetic field is generated. Drive 13 rotates & (L oe ate about o th 13

Description

FIG. 2

rotor 11, the pulp moves in chambers 2 through channels. The ferromagnetic particles are attracted to the precipitation surfaces. The nonmagnetic part passes downwards and is carried to the receiver. Water is fed into chamber 2 to better flush the magnetic particles from the settling surfaces. 3 il.

The invention relates to the beneficiation of minerals, in particular, the separation of paramagnetic ores in volume-gradient magnetic separators with a superconducting magnetic system.

The purpose of the invention is to increase the efficiency of the separation process by creating optimal conditions for the deposition of ferromagnetic particles throughout the entire volume of the working chamber.

FIG. Figure 1 shows schematically the magnetic system of a separator and a working chamber located next to it, divided by precipitation surfaces into four channels, whose width decreases with distance from the poles of the magnetic system, as well as graphs of magnetic field induction along the working chamber width at magnetizing currents 1000 and 1500A; in fig. 2 - dzukhrotorny separator with an open multi-pole double-concave magnetic system, general view; in fig. 3 - the same, top view.

The separator consists of a superconducting magnetic system 1 with poles (not shown), located in the immediate vicinity of the working chamber 2 of the separator, which is divided into precipitation surfaces 3, 4 and 5 into four channels 6-9. The precipitation surfaces 3, 4 and 5 are made of a non-magnetic material. If necessary, they can be fixed elements of a ferromagnetic material, depending on the characteristics of the enriched ore. Plots 10 of the change in induction of the magnetic field across the width of chamber 2 show how the induction of the magnetic field varies as the magnetic currents of the magnetic system 1000 and 1500A move away from the poles of the magnetic system.

The working chambers 2 are mounted on the rotor 11. Under the rotor 11 there is an annular groove 12 for receiving separation products. The rotor 11 is rotated by the drive 13. Shi

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The channel formed by the adjacent precipitation surfaces 3 and 4 is inversely proportional to the distance from the poles to the channel axis.

The separator works as follows.

System 1 is supplied with a current of the required magnitude. Depending on the magnitude of the induced current on both sides of the magnetic system, a magnetic field is generated, the induction of which varies according to the graphs 10 shown in FIG. 1. The rotor drive 13 is turned on. Ore in the form of pulp is fed to working chambers 2. In the working chambers 2, the pulp moves along channels 6-9. Magnetic particles of ore in each channel are attracted to their settling surface. The width of channels 6–9 is calculated in such a way that the time of attraction of the ore particles most distant from the precipitating surface in channel 6 is equal to the time of attraction of the most distant ore particles in channels 7.8 and 9, i.e. identical conditions have been created for attracting the most distant magnetic particles from the settling surfaces in all working channels. Non-magnetic particles, along with the flow of water under the influence of gravity, are transferred from the working chamber to the receiver for the non-magnetic product.

After the cycle ends, the attraction of magnetic particles of ore to the precipitation surfaces and the unloading of non-magnetic particles by the working chambers during rotation of the rotor leaves the magnetic field in the region where the magnetic forces on the magnetic particles cease. Under the influence of gravity, the magnetic particles slide down from the precipitation surfaces into the receiver for the magnetic product. Water is fed into the working chambers to better flush the magnetic particles from the settling surfaces.

Claims (1)

Formula and gains Magnetic separator, including surfaces, feeder and receivers of separation products, which also denotes, in order to increase the vertically installed rotor, the efficiency of the separation process, the filler system with poles, to create optimal conditions the deposition of ferromagnetic particles throughout the working chamber, the width of the channel formed by the neighboring rotor with external chambers placed around its perimeter working chambers in which parallel to the poles of the magnetic system and the axis of the rotor are reversely installed with the formation of channels poles for the passage of pulp precipitating to the axis of the channel. 3.0 2.8 " /, I  /, H, 2 f p  Of w oh g Distance from magnetic / y to $ d Fig 1. At 1500A 3-WOO A 01131 + 56-16 Shug. 3