SU880497A1

SU880497A1 - Electric separator

Info

Publication number: SU880497A1
Application number: SU792831875A
Authority: SU
Inventors: Владимир Иванович Ревнивцев; Анатолий Исаевич Месеняшин; Виталий Владимирович Ермаков
Priority date: 1979-10-24
Filing date: 1979-10-24
Publication date: 1981-11-15

Description

(54) ЭЛЕКТРИЧЕСКИЙ СЕПАРАТОР (54) ELECTRIC SEPARATOR

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Изобретение относитс к обогащению полезных ископаемых, а именно к устройствам дл электрической сепарации и может быть использовано, например, в горной промыш-, ленности, промышленности строительных материалов, дл очистки отходов промышленного производства и т.д.The invention relates to the enrichment of minerals, namely, devices for electrical separation and can be used, for example, in the mining industry, the building materials industry, for cleaning industrial waste, etc.

Известен электросепаратор с отклон ющим высоковольтным электродом, выполненным из трубок, имеющих форму .дуги 1.An electrical separator is known with a deflecting high voltage electrode made of tubes having the shape of an arc 1.

Наиболее близким к предлагаемому по технической сущности и достигаемому эф- ,д фекту вл етс электрический сепаратор, включающий питатель, осадительный и отклон ющий электрод, приемники продуктов разделени {2.The closest to the proposed technical essence and the achieved effect, the effect is an electric separator including a feeder, a collecting and deflecting electrode, receivers of separation products {2.

Известные сепараторы характеризуютс Л5 невозможнбстью создать неравномерное поле на поверхности барабана, при котором увеличиваетс разница между углами отрыва сепарируемых частиц и следовательно селективность их разделени .The known separators are characterized by L5 impossibility to create an uneven field on the surface of the drum, with which the difference between the separation angles of the separated particles and, consequently, the selectivity of their separation increases.

Цель изобретени - повышение эффективностн процесса сепарации за счет создани в рабочей зоне участков различной напр женности .The purpose of the invention is to increase the efficiency of the separation process by creating areas of different strengths in the working area.

Эта цель, достигаетс тем, что отклон ющий электрод выполнен в виде планок, размещенных под углом друг к другу и снабженных механизмом пространственного перемещени , при Э1ТОМ планки выполнены с отношением ширины к высоте не менее 2:1 и установлены с зазором.This goal is achieved by the fact that the deflecting electrode is made in the form of strips placed at an angle to each other and equipped with a mechanism for spatial movement, while at ELT the strips are made with a ratio of width to height of at least 2: 1 and installed with a gap.

На фиг. 1 и 2 приведены примеры выполнени предлагаемого сепаратора.FIG. 1 and 2 show examples of the proposed separator.

Сепаратор содержит бункер 1, барабан (осадительный электрод) 2, выполненный в виде цилиндра с приводом дл вращени , коронирующий электрод 3, отклон ющий электрод 4, выполненный из двух планок 5 и 6, приемники дл продуктов разделени 7-9, щетку 10 дл сн ти материала, налипшего на барабан 2. Предпочтительным вл етс установка планки 5 узкой полкой (высотой ) в сторону барабана 2 по нормали к его поверхности или близко к нормали.The separator contains a hopper 1, a drum (collecting electrode) 2 made in the form of a cylinder with a drive for rotation, a corona electrode 3, a deflecting electrode 4 made of two strips 5 and 6, receivers for separation products 7-9, a brush 10 for removing This material adheres to the drum 2. It is preferable to install the strip 5 with a narrow shelf (height) in the direction of the drum 2 along the normal to its surface or close to the normal.

На фиг. 1 представлен вариант, в котором планки 5 и 6 установлены с зазором II и св заны механизмом пространственного перемещени 12, например рейками с прорез ми .FIG. Figure 1 shows a variant in which the strips 5 and 6 are installed with a gap II and are connected by a mechanism of spatial movement 12, for example with slats with slits.

Claims

. FIG. 2, the placement of the strips 5 and 6 relative to each other is preferred for the case in which the separated component contains particles with very high electrical conductivity or having an elongated shape. Slat 6 is installed above slat 5 and placed farther away from drum 2 as compared to slat 5, therefore slat 6 creates a smaller field strength on drum 2 than strap 5. Work separator & as follows. The material from the hopper 1 falls on the rotating drum 2. Particles are charged by the corona electrode 3 or by a tributary charge. Further, the separated particles fall into the zone of action of the deflecting electrode 4. Since the strip 5 is turned toward the drum 2, a uniform electric field is negated on the surface of the latter in this zone. A strongly uneven field created on the surface of the drum 2 enhances the separation efficiency of a number of minerals. Particles having a charge sign opposite to the polarity of the deflecting electrode 4 are directed to the electrode 4 and enter the receiver 7. However, some of the minerals with the same sign opposite to the polarity of the deflecting electrode 4 are in a stream of particles of a different sign. Indeed, in separators, the original trajectory of small particles of the corresponding sign, attracted to the deflecting electrode 4, and the trajectory of large particles of another sign, detached from the drum 2 under the action of mechanical centrifugal forces, coincide. Such particles, which are located in one stream, can be separated upon prolonged exposure to an electrostatic field. Such an electrostatic field is created by the strip 6. When setting up, the strip 6 is installed along the path of the separating component and guides the corresponding particles to the receiver 7. Some of the separated particles that have a larger charge than the other particles slip into the gap 11 between the strips 5 and 6. When the presence of such a gap 11, these particles are not recharged, what happens with the hour; contact with the electrode 4. In order for the field to be strongly uneven along one side of the bars 5 and 6, and weakly to be uniform along the other side, the ratio of the width to the height of the bars 5 and 6 would be at least 2: 1. Since, in this case, the forces due to the inhomogeneity of the electric field are referred to as 1: 4 and on the longer side, this force can be neglected. The optimal shape of the electric field on the drum 2 and along the particle trajectory of the separated component is selected when moving the strips 5 and 6 relative to the drum 2 and relative to each other using, for example, rails with slots 12. When installing the slats (Fig. 2), particles with high electrical conductivity under the action of the floor created by the bar 6, they are detached from the drum 2 above the electrode 4, fly over it and enter the receiver 7. The bar 5, as well as in the embodiment of FIG. 1 contributes to the detachment of the corresponding particles from the drum 2. Thus, the proposed separator improves the separation efficiency, since it creates the optimal configuration of the electric field, namely: it creates a highly uneven field on the surface of the drum and thereby facilitates the detachment of the separated component from it; creates a long-lasting electrostatic field for the total flow of particles after their separation from the drum and thereby facilitates the separation of the separable component from the total flow; provides the possibility of creating fields with reduced (or increased) electric field strength in the necessary areas of separation, which contributes to the separation of particles with large charges; allows for wide variation in the shape of the electric field in different separation zones. 1. Electrical separator, including feeder, precipitating and deflecting electrodes, receivers of separation products, characterized in that, in order to increase the efficiency of the separation process by creating sections of different strengths in the working area, the deflecting electrode is made in the form of slats at an angle to each other. 2. A separator according to claim 1, characterized in that the slats are provided with a mechanism for spatial movement. 3. A separator according to claim 1, characterized in that the strips are made with a ratio of width to height of at least 2: 1. 4. A separator according to claim 1, characterized in that the strips are installed with a gap. Sources of information taken into account in the examination 1. The author's certificate of the USSR No. 361815, cl. B 03 C 7/02, 1965.

2. USSR author's certificate for application No. 1991069/03, cl. At 03 C 7/02, 1974 (prototype).

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