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Method for producing aluminium oxide ceramic ball

A kind of technology of alumina ceramics and production method, which is applied in the field of production of high wear-resistant special alumina ceramic balls, can solve the problems of reducing the performance of ceramics, and achieve the effects of low raw material cost, easy promotion and industrialization

Inactive Publication Date: 2012-06-13
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, polyvinyl alcohol is an organic substance, and the size of alumina grains will not be reduced during high-temperature firing. Sodium tripolyphosphate may also reduce the performance of ceramics due to the introduction of sodium ions.

Method used

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  • Method for producing aluminium oxide ceramic ball
  • Method for producing aluminium oxide ceramic ball

Examples

Experimental program
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Effect test

Embodiment example 1

[0023] According to the ratio of 94.5wt% α-Al 2 o 3 , 3wt% Suzhou soil, 1.5wt% dolomite, 0.5wt% calcined talc, 0.5wt% heavy calcium Weigh 1000 kg of ceramic powder and place it in a high-energy stirring mill, add water and 0.1% polyacrylamine to make a solid content It is 60% slurry, milled for 120min, and spray-dried. After drying, the moisture content of the powder is 1%. Put the dried powder in a rolling ball machine, and spray the powder with a concentration of 0.2 while rolling the powder. wt% PVA solution, until the alumina ceramic ball seeds with a diameter of about 3mm are made; the prepared seeds are added to the ball rolling machine, and the powder and concentration of 0.5wt% PVA solution are continued until rolled into diameters After the ceramic ball green body is about 12mm, spray a small amount of water and let the green body roll for another 30 minutes; dry the ceramic ball green body to a moisture content of 2%; place the dried ceramic ball green body in a hig...

Embodiment example 2

[0025] According to the ratio of 89.5wt% α-Al 2 o 3 , 6wt% Suzhou soil, 2.0wt% dolomite, 1.5wt% calcined talc, 1.0wt% heavy calcium weigh 1000 kg and place it in a high-energy stirring mill, add water and 0.5% polyacrylic acid amine to make a solid content of 60% The slurry was ground for 150 minutes and spray-dried. After drying, the moisture content of the powder was 0.5%; the dried powder was slowly added to the rolling ball machine, and while the powder was rolling, it was sprayed with a concentration of 0.3wt% by spraying. PVA solution, until the aluminum oxide ceramic ball seeds with a diameter of about 4mm are made; the prepared seeds are placed in a ball rolling machine, and powder and concentration are continued to be added to a PVA solution with a concentration of 0.8wt%, until they are rolled into a diameter of about After the 12mm ceramic ball green body, spray a small amount of water, and let the green body roll for another 40 minutes; dry the ceramic ball green ...

Embodiment example 3

[0027] According to the ratio of 92.0wt% α-Al 2 o 3 , 4.5wt% Suzhou soil, 1.8wt% dolomite, 1.0wt% calcined talc, 0.7wt% heavy calcium weigh 1000 kilograms and place it in a high-energy stirring mill, add water and 1% polyacrylic acid amine to make a solid content of 60 % of the slurry, ball milled for 180min, spray-dried, the moisture content of the dried powder was 1.5%; the dried powder was slowly added to the rolling ball machine, while rolling the powder, spraying the concentration of 0.4wt in the form of spray % PVA solution, until making alumina ceramic ball seeds with a diameter of about 6mm; the prepared seeds are placed in a ball rolling machine, and continue to add powder and 1.0wt% PVA solution until rolling into a diameter of about 12mm After the ceramic ball green body, no longer spray PVA solution, and let the green body roll for another 30 minutes; dry the ceramic ball green body to a moisture content of 6%; put the dried ceramic ball green body in a high-tempe...

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Abstract

The invention relates to a method for producing a high wear resisting aluminium oxide ceramic ball, comprising the following steps: (1) weighing ceramic powder according to the following weight ratio; (2) adding water and 0.1-1 wt% of polyacrylamide as a dispersant in the ceramic powder to prepare a slurry, and carrying out ball milling; (3) carrying out spray drying; (4) preparing an aluminium oxide ceramic ball seed; (5) putting the ceramic ball seed in a bowl machine to produce a ceramic ball body; (6) drying the ceramic ball body; (7) putting the dried ceramic ball body in a high temperature kiln to calcine, and sintering; and (8) polishing the ceramic ball until the surface of the ceramic ball has a shining luster, discharging, drying and then packaging. According to the invention, the produced wear resisting aluminium oxide ceramic ball with a diameter of 10 mm only has an abrasion of 0.02-0.04 g / (kg.h). The method has the advantages of low sintering temperature, low cost of the raw materials, and easy popularization, and can realize industrialization.

Description

Technical field [0001] An alumina ceramic ball production method involves a high -wear -resistant special aluminum ceramic ball production method. Background technique [0002] The alumina ceramic balls are widely used in building sanitary ceramics, industrial ceramics, electronic ceramics, high -end refractory materials, special cement, non -metallic minerals, non -metallic minerals, non -metallic minerals, non -metal minerals, coatings, and coatingsPowder grinding and processing of raw materials such as paint and other industries.As a grinding medium, abrasion resistance is the most important indicator for assessing the quality of alumina ceramic balls. [0003] China Patent CN 1931784 B revealed a recipe for high-temperature wear-resistant aluminum porcelain porcelain tube. By adding silicon carbide to improve alumina ceramic resistance at 800-900 ℃ high-speed oil and gas flowing performance and cold and cold-resistant acute change performance.Under normal circumstances, the u...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/622
Inventor 段光福陈湘清孟德安刘万超
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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