Preparation method of high-temperature corundum mullite crucible

A technology of mullite and corundum, which is applied in the field of preparation of high-temperature corundum mullite crucibles, can solve the problems of large fluctuations in product quality, short service life, poor creep resistance, etc., and achieve scientific and reasonable preparation methods and facilitate industrial production , the effect of improving production efficiency

Inactive Publication Date: 2019-04-05
山东铭特陶瓷材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The corundum mullite crucible currently on the market has a short service life and is produced by traditional refractory production methods. The product is rough, and the thermal shock stability is not good, the creep resistance is poor, and the product quality fluctuates greatly.

Method used

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  • Preparation method of high-temperature corundum mullite crucible
  • Preparation method of high-temperature corundum mullite crucible
  • Preparation method of high-temperature corundum mullite crucible

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Calcined alumina powder 40%; mullite powder 15%; kyanite powder 10%; kaolin powder 20%; white corundum particles 15%.

[0035] The particle diameters of the calcined alumina powder, mullite powder, kyanite powder and kaolin powder are all 1-44 μm; the particle diameter of the white corundum particles is 50 mesh.

Embodiment 2

[0037] Calcined alumina powder 45%; kyanite powder 10%; kaolin powder 30%; white corundum particles 15%.

[0038] The particle diameters of the calcined alumina powder, kyanite powder and kaolin powder are all 20-60 μm; the particle diameter of the white corundum particles is 18 mesh.

Embodiment 3

[0040] Calcined alumina powder 30%; kyanite powder 10%; kaolin powder 40%; white corundum particles 15%; fused quartz particles 5%.

[0041] The particle diameters of the calcined alumina powder, kyanite powder, kaolin powder and fused silica particles are all 15-50 μm; the particle diameter of the white corundum particles is 100 mesh.

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Abstract

The invention relates to a preparation method of a high-temperature corundum mullite crucible, and belongs to the field of silicate crucible preparation. The crucible comprises, by mass, 10-50% of calcined alumina powder, 5-20% of kyanite powder, 20-40% of kaolin powder and 5-30% of white corundum particles. The preparation method having five steps has the advantages of scientificity, reasonability, simplicity and easiness in operation, and convenience in industrial production; the prepared crucible has the advantages of long service life, high temperature resistance, high creep resistance andthe like.

Description

technical field [0001] The invention relates to a method for preparing a high-temperature corundum mullite crucible, belonging to the field of silicate crucible preparation. Background technique [0002] The characteristics of corundum mullite crucible are high temperature resistance, acid and alkali resistance, rapid cooling and extreme heat resistance, chemical corrosion resistance; high thermal conductivity, low thermal expansion rate, and no reaction with air, water vapor, hydrogen, carbon monoxide, etc. It can be used for a long time when the temperature of the thermal field does not change much, and the maximum short-term use temperature is 1650°C. [0003] Mullite crystal is a good refractory raw material, which is used in ceramics, metallurgy, casting, electronics and other industries. It has the characteristics of high temperature resistance, high strength, low thermal conductivity, and remarkable energy saving effect. The lining of ceramic roller kiln, tunnel kiln...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/101
CPCC04B35/101C04B2235/3463C04B2235/349C04B2235/77C04B2235/96C04B2235/9607
Inventor 孙华云李明晶蔡衍坤蔡伟殷佩如许彤
Owner 山东铭特陶瓷材料有限公司
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