Electric charging unit and electroststic separation apparatus using the same

A technology of electrostatic separation and electrostatic force, applied in the direction of electrostatic effect separation, solid separation, chemical instruments and methods, etc., can solve the problem of low charging efficiency
CN104646178AInactive Publication Date: 2015-05-27POHANG IRON & STEEL CO LTD
9 Cites 19 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
POHANG IRON & STEEL CO LTD
Publication Date
2015-05-27
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Disclosed are an electric charging unit and an electroststic separation apparatus using the same. The electric charging unit allows a first material and a second material to possess opposite electric charges. The electric charging unit comprises charging balls colliding and rubbing with the first material and the second material. The charging balls meet the following conditions: the work function of the first material< the work function of the charging balls < the work function of the second material.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a charging unit that separates different materials from each other by making the different materials oppositely charged, and an electrostatic separator (electrostatic separator) using the charging unit. Background technique

[0002] Coal generally consists of carbon as a useful substance and ash including impurities such as quartz, alumina and clay minerals. Coal with a higher impurity content has a lower calorific value. For this reason, it is crucial to remove ash from coal during coal preparation.

[0003] Coal preparation methods are divided into wet separation (sorting) and dry separation (sorting).

[0004] The key factor to improve the separation efficiency in coal preparation is the dissociation degree of useful minerals and gangue minerals. That is to say, in order to improve the separation efficiency, it is necessary to increase the degree of dissociation, which can be achieved by ultrafine pulverization. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More