SU1440547A1 - Electric drum separator - Google Patents

Description

This invention relates to the separation of bulk mixtures by physical properties, in particular to electrical separators for the separation of particles by electrical conductivity.

An electrical separator is known, including vertically mounted solenoid cylinders mounted rotatably, with 1 m being placed on their surface with electrodes with alternating polarity.

The disadvantages of this separator are low efficiency and productivity of the separation process.

The closest to the present invention is an electric drum separator, which includes a loading device, a drum-type collecting electrode, corona and electrostatic -electrodes located outside the drum along its generators, a device for removing non-conductive particles and receivers of separation products.

The disadvantages of the known separator are low efficiency and productivity of the separation process.

The purpose of the invention is to increase the efficiency of the separation process of unclassified material and the performance of the separator due to more complete utilization of the drum surface.

This goal is achieved by the fact that in an electric drum separator, which includes a loading device, a collecting electrode in the form of a drum, a corona and electrostatic electrodes, is located outside the drum along its shape, a device for removing non-conducting particles and receivers of separation products, the drum is installed vertically, and the loading device is located above the upper end of the drum,

Fig. 1 shows a schematic vertical section of the proposed electric drum separator} in Fig. 2 - section A-A in Fig. 1.

The separator has a disk-type loading device 1, a collecting electrode 2, made in the form of a cylindrical drum rotating around the vertical axis, working channels in which corona-producing electrodes 3 are installed, electrostatic electrodes 4,

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5 for removing dielectric particles from a precipitating electrode, made in the form of brushes, collections of electrically conductive fraction 6, non-electrically conductive fraction 7 and intermediate separation products 8.

The separator works as follows.

The material being separated by this or that device, such as a plate type 1 feeder, is uniformly fed into all the separator working channels from the end side of the collecting electrode 2 to the zones of corona rods 3 and is moved to the corona field, discharge under the force of gravity or in the air flow.

When moving in the field of a corona discharge, the separable particles acquire an electric charge and move towards the precipitation electrode. Non-conductive particles are fixed on the surface of the precipitation electrode, move with it as it rotates, and are removed with a brush of the detachable device 5 into the collection of non-conductive fraction 7,

The electrically conductive particles of the material being separated, reaching the collecting electrode, are instantly discharged and discarded into the collector 6 of the electrically conductive fraction. In this case, the electrically conductive particles, moving along the generator of the precipitating drum, repeatedly receive a charge in the field of corona, approaching and bouncing from the precipitating electrode, move in a zigzag manner. In this case, multiple cleaning of the electroproduction fraction is carried out and the efficiency of the separation process increases. A part of the material being separated after deposition on the drum moves to the zone of electrostatic electrodes 4, where the electrostatic particles and metal splices with rock are additionally separated by the electrostatic field, which are discharged into the intermediate material collector 8.

The multichannel supply of the material to be separated into the space between the corona- tion, electrostatic, and precipitating electrode allows full use of the surface of the precipitation drum. The capacity of the separator increases in proportion to the number of working separation channels and can be further increased by increasing the speed of the material being separated during its forced transport. in the working channels, for example in the air flow.

Supply of the material to be separated from the end part of the precipitation electrode and its movement in a plane parallel to the drum-forming material increases the time the material is in an electric field. All dielectric particles have time to get

sufficient electrical charge to be fixed on the surface of the precipitation electrode and enter the receiver of the non-conductive fraction. Separation efficiency increases. Moreover, there is no need for a multisection assembly of electrical separators, since the same effect is achieved due to the length of one electrode. All this leads to a significant matching of the mass of the separator while increasing its productivity and operating efficiency.

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Claims (1)

ELECTRIC Drum Separator, including a loading device, a precipitation electrode in the form of a drum, corona and electrostatic electrodes located outside the drum along its generators, a device for removing non-conductive particles and receivers of separation products, characterized in that, in order to increase the efficiency of the separation process of unclassified material and separator performance due to more complete use of the surface of the drum, the latter is installed vertically, and zag y ~ dressing device is disposed above the top end of the drum. SU .... 1440547> emails ³ 1440547 2