Technique for producing silicon carbide miropowder

A technology of silicon carbide micropowder and production process, which is applied in the direction of grain processing, etc., can solve the problems of limited product application range, difficult control of product quality, and many production processes, and achieve the effects of easy control of product quality, high production efficiency, and convenient operation

Inactive Publication Date: 2007-10-03
JIANGSU LEYUAN MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is a kind of wet production. Because the process requires a large space, abundant water resources, and many production processes, its practical application has been greatly restricted; The scope of application of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1. A kind of production technique of silicon carbide micropowder, its step is as follows:

[0024] (1) Take the silicon carbide raw material, crush it in the crusher, and sieve it to silicon carbide particles no larger than 5mm, and then use a shaping machine to shape it into silicon carbide particles no larger than 2mm, and the oval particles account for 80% % or more, then it is pickled to remove impurities and dried;

[0025] (2) The above-mentioned dried silicon carbide particles are pulverized into d 50 = 9.5μm silicon carbide powder, when crushing, the main current of the mill is set to 70A, and the flow rate of the fan is set to 45m 3 / min, the speed of the analyzer is 500 rpm;

[0026] (3) Then use the vortex air classifier to classify the silicon carbide powder. During classification, the flow rate of the fan of the vortex air classifier is 35m 3 / min, the rotating speed of the grading wheel is 2900 rpm, and the particle size d is separated from the...

Embodiment 2

[0028] Example 2. A kind of production technique of silicon carbide micropowder, its step is as follows:

[0029] (1) Take the silicon carbide raw material, crush it in the crusher, and sieve it to silicon carbide particles no larger than 5mm, and then use a shaping machine to shape it into silicon carbide particles no larger than 2mm, and the oval particles account for 80% % or more, then it is pickled to remove impurities and dried; the pickling agent selected for pickling is flotation oil and 5% sulfuric acid solution;

[0030] (2) The above-mentioned dried silicon carbide particles are pulverized into d 50 = 9.5μm silicon carbide powder, when crushing, the current of the host machine of the mill is set to 65A, and the flow rate of the fan is set to 40m 3 / min, the speed of the analyzer is 400 rpm;

[0031] (3) Then use the vortex air classifier to classify the silicon carbide powder. During classification, the flow rate of the fan of the vortex air classifier is 25m 3 ...

Embodiment 3

[0033] Example 3. A kind of production technique of silicon carbide micropowder, its step is as follows:

[0034] (1) Take the silicon carbide raw material, crush it in the crusher, and sieve it to silicon carbide particles no larger than 5mm, and then use a shaping machine to shape it into silicon carbide particles no larger than 2mm, and the oval particles account for 80% % or more, then it is pickled to remove impurities and dried; the pickling agent selected for pickling is flotation oil and 15% hydrochloric acid solution;

[0035] (2) The above-mentioned dried silicon carbide particles are pulverized into d 50= 11.5μm silicon carbide powder, when pulverizing, the current of the main engine of the pulverizer is set to 75A, and the flow rate of the fan is set to 50m 3 / min, the speed of the analyzer is 600 rpm;

[0036] (3) Then use the vortex air classifier to classify the silicon carbide powder. During classification, the flow rate of the fan of the vortex air classifi...

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PUM

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Abstract

The invention relates to a manufacturing technique for carbofrax micronized quartz powder. The invention comprises secondary crushing, sizing, shaping, acid cleaning, disintegrating, assorting and secondary assorting, and can produce completed product A of 800 -1000 orders, completed product B of 1200-1500 orders and coproduct exceeding 1500 orders. The invention associates mechanical grinding technology with air classifying technology to classify carbofrax micronized quartz powder efficiently. The invention has the advantages of advanced assorting, controllable product quality and high yield of sheet-like and needle-like product.

Description

technical field [0001] The invention relates to a production process of carbon compounds, in particular to a production process of silicon carbide micropowder. Background technique [0002] There is no natural silicon carbide. Artificial silicon carbide was successfully researched at the end of the 19th century, and achieved rapid development and wide application in the 20th century. Due to the excellent performance of silicon carbide, it has become the main raw material of refractories that are indispensable in the iron and steel industry, ceramic industry, and non-metallic industry. ", occupies an important position in the national economy. In the 21st century, in addition to continuing to be the main body in the above-mentioned fields, silicon carbide abrasives have also become abrasive materials for electronic work and precision industry with significant technological innovation, and are also important materials for structural materials in the ceramic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C23/08B02C25/00
Inventor 朱立起陶连斌李方庆张顺军郭守全胡顺武
Owner JIANGSU LEYUAN MATERIAL
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