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Vertically-distributed medium rod rotating friction electric separation equipment and electric separation method

A technology of rotating friction and vertical distribution, which is applied in the direction of chemical instruments and methods, solid separation, electrostatic effect separation, etc. It can solve the problems of small particle charge, low sorting efficiency, and unstable charge, so as to facilitate the collection of materials , Free and convenient installation and extraction, increasing the effect of uniformity

Active Publication Date: 2022-07-05
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]Frictional electrostatic separation technology has a wide application prospect in the field of mineral separation, and its charging effect has a great influence on the frictional electrostatic separation effect, and the current charging equipment There are problems such as small particle charge, unstable charge, easy agglomeration, and low sorting efficiency

Method used

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  • Vertically-distributed medium rod rotating friction electric separation equipment and electric separation method
  • Vertically-distributed medium rod rotating friction electric separation equipment and electric separation method
  • Vertically-distributed medium rod rotating friction electric separation equipment and electric separation method

Examples

Experimental program
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Effect test

Embodiment 1

[0075] This example is triboelectric separation of fine-grained anthracite coal.

[0076] A vertically distributed dielectric rod rotating triboelectric separation equipment, such as Figure 1-3 As shown, it includes a fixed bracket, a rotating motor 1, a rotating main shaft 2, a circular table groove 3, a medium rod 4, a casing 5, a discharge port 6, an electric selection area 7 and a collection tank 8. The rotary main shaft 2 is connected to the rotary motor 1, and the rotary motor 1 is fixed on the fixed bracket; the circular table groove 3 is fixed on the rotary main shaft 2, and rotates together with the rotary main shaft 2, and there is a space between the bottom of the circular table groove 3 and the rotary main shaft 2. In a certain space, after the material falls into the circular table groove 3 through the vibrating feeder 10, it rotates along the inner wall and descends under the action of gravity, and falls to the medium rod 4 through the space at the bottom of the...

Embodiment 2

[0088] This embodiment is the triboelectric separation of fine-grained fly ash, and the separation system of the electric separation equipment provided in Embodiment 1 is used.

[0089] The specific implementation process is as follows:

[0090] The triboelectric separation was carried out using kaolin with a particle size of less than 0.074 mm and a loss on ignition of 32.98%.

[0091] In this embodiment, the rotating speed of the rotary motor 1 is set to 220 r / min, and the feeding speed of the vibrating feeder is set to 20 g / min.

[0092] Feed the fly ash into the vibrating feeder 10 tank, first set the rotating motor speed to 220r / min through the PID2 controller, then turn on the control switch of the rotating motor 1 through the PID1 controller, and the rotating motor 1 drives the main shaft 2 to rotate; After the rotating spindle 2 reaches a stable rotation state, the high-voltage DC power supply 15 is started through the PID1 controller, and then the voltage is adjusted...

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Abstract

The invention discloses vertical distribution medium rod rotating friction electric separation equipment and a separation method, belongs to the technical field of dry method electrostatic separation, and solves the problems that existing charging equipment is small in particle charging amount, unstable in charging, easy to agglomerate, low in separation efficiency and the like. The electric separation equipment comprises a feeding unit, a charging unit and a separation unit, the charging unit comprises a shell, a rotating motor, a rotating main shaft and a medium rod; the rotating motor is connected with the rotating main shaft, the rotating main shaft is vertically arranged, the medium rod is fixedly arranged on the rotating main shaft and is perpendicular to the rotating main shaft, the rotating main shaft and the medium rod are arranged in the shell, and the rotating main shaft drives the medium rod to rotate to form a charge region; materials enter the charging unit through the feeding unit, and the materials are in contact, friction and collision with the medium rod while falling by means of the gravity of the materials, so that the materials are charged; and the charged materials enter the sorting unit to be sorted. According to the invention, the material is fully charged.

Description

technical field [0001] The invention belongs to the technical field of dry electrostatic separation, in particular to a vertically distributed dielectric rod rotating triboelectric separation equipment and an electric separation method. Background technique [0002] Tribostatic separation technology is a dry separation technology based on the difference in electrical properties between materials, which can effectively separate materials with a particle size of less than 74 μm. [0003] At present, the widely used wet separation method is mainly flotation method, which needs to consume a lot of chemicals and water. The separated products also need to be dehydrated and dried. The process is very complicated, and it will lead to water shortage and water pollution. question. However, in the northwest region, which is rich in mineral resources, there is a shortage of water, and it is difficult to develop mineral resources. With the continuous development of dry beneficiation te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C7/02
CPCB03C7/02
Inventor 贺靖峰陈泠桦刘斌陈浩白强刘志国
Owner CHINA UNIV OF MINING & TECH