SU797773A1 - Electrostatic separator - Google Patents

Description

one

The invention relates to the enrichment of useful minerals, namely, the design of electrostatic separators for the enrichment or separation of bulk materials.

The closest to the technical essence of the invention is an electrostatic separator for separating and classifying loose materials, including a precipitating electrode in the form of a hollow rotating cylinder, inside which is a corona electrode, and receivers for separation products 1.

However, this separator has a low separation selectivity due to the fact that the material to be separated is in contact with the collecting electrode in an electrostatic field. For a short period; To compensate for this disadvantage, the separators are multi-stage, which increases the size of the separator.

The purpose of the invention is to increase the separation efficiency by creating an electric field only in the separation zone.

The goal is achieved by the fact that in the proposed separator, the precipitation electrode is made in the form of sectors separated by dielectric spacers, and a sector located in the working zone of the separator is connected to the high voltage source.

FIG. 1 - schematically shows a separator, a longitudinal section; in fig. 2, section A-A in FIG. one.

The electrostatic separator includes a precipitation electrode 1 in the form of a hollow rotating cylinder, inside of which is the corona electrode 2 and receivers 3 for the separation products.

For better supply of the material to be separated, guides 4 are provided.

Claims (1)

In the collecting electrode 1 there are inserts 5 separating the electrode 1 into a number of sectors electrically isolated from each other; In order to allow the tribozarad material to be divided into particles of the required size and sign, replaceable lining 6 is provided in electrode 1. The separator is provided with a sliding contact 7 for connecting a high voltage source 8 to one of the sectors, namely the sector that will be in the working area of the separator, while the remaining sectors are grounded through a similar device. At the loading (upper) part of the deposition electrode 1, a holder 9 is mounted for feeding the material to be separated onto the inner surface of electrode 1. The installation mounts with a certain inclination of the horizon. The electrostatic separator operates as follows. . The feed of the separated material through the feeder 9, carried out using known methods, is carried out into the inclined rotating electrode 1 onto its internal working surface from the upper part. Particles of the material being divided on the internal surface of electrode 1 are set in motion, the speed of which depends on the angle of inclination of this electrode. In this case, however, along the surface of the rotating electrode 1, the particles of the material being separated receive the necessary charge, for example, a tributary charge, the parameters of which depend on the speed of movement of the particles and the material of the lining 6. The particles carried away by the rotation of the electrode 1 are detached from a certain place it and, pada, fall on guides 4, which distribute the flow of particles that fall into the zone of action of the electric field of the corona electrode 2, under the influence of which particles change the trajectory of their flight and fall into one or another This receiver 3 or is showered again on the inner surface of the electrode 1 for repeated separation cycles. Due to the insulating inserts 5, an electrostatic field of high intensity is created only in the zone of the currently operating part of the electrode 1, where the particles of the material are separated from its surface. Such a constructive implementation makes it possible to reduce the volume of the separator and order the movement of particles outside the separation zone, where there is no high-voltage electric field. Claims of Electrostatic Separator for Separating and Classifying Bulk Materials Including a Precipitating Electrode in the Form of a Hollow Rotatable Cylinder Inside of which is a Corona Electrode, and receivers for separation products, characterized in that in order to increase separation efficiency by creating an electric field separation, the precipitation electrode is made in the form of sectors separated by dielectric spacers, and to the source of high voltage by means of a sliding ontact connected sector located in the working zone of the separator. Sources of information taken into account in the examination 1. USSR author's certificate 264048, cl. B 07 B 13/02, B 03 C 7/00, 07/03/68 (prototype). Pq /  FIG. g