Turbine classifier as well as gradient classifying and purifying system for superfine silica powder

A turbine classifier and silicon dioxide technology, applied in swirl devices, grain processing, etc., can solve the problems of affecting the classification effect, reducing the classification accuracy, unreasonable structural design of the cage blade and guide blade, etc.
CN108273637APending Publication Date: 2018-07-13εΊžε‡― +1
9 Cites 3 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
εΊžε‡―
Publication Date
2018-07-13

Smart Images

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

Abstract

The invention relates to the technical field of superfine silica powder separation and purification, in particular to a turbine classifier as well as a gradient classifying and purifying system for superfine silica powder. The gradient classifying and purifying system comprises a ball mill and a multi-stage sorting device, wherein the multi-stage sorting device is used for crushing silica powder outputted from the ball mill and carrying out gradient separation on the crushed silica powder stage by stage according to the particle fineness degrees, and comprises sorting units in n stages; and the sorting unit in each stage comprises the turbine classifier and a cyclone separator. The gradient classifying and purifying system provided by the invention has the beneficial effects that through an improvement on the structure of a turbine airflow classifier, the classifying precision and the dispersing effect can be greatly improved; after the silica powder is treated through the sorting units in a plurality of stages, products of which the particle fineness degrees are classified in a gradient manner can be precisely obtained; and then the high-purity superfine silica powder can be obtained.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] The invention relates to the technical field of separation and purification of ultrafine silica powder, in particular to a turbo classifier and a gradient classification and purification system for ultrafine silica powder. Background technique

[0002] Silica powder is also called quartz powder. It has the characteristics of excellent dielectric properties, low thermal expansion coefficient, high thermal conductivity, good high temperature resistance, corrosion resistance, and high hardness. It is a high-quality neutral inorganic filler and is widely used In the plastics, rubber, coatings, electronics, electrical and high-tech products industries, especially in the period of rapid development of the modern electronics industry, semiconductor device packaging materials need to use a large amount of epoxy molding compound, and high-purity silica is ultra-fine Powder is its main filler. With the development of the domestic electronic packaging industry, the d...

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