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Saggar with high thermal shock and long service life and preparation method thereof

A long-life, saggar technology, applied in lighting and heating equipment, furnace components, furnaces, etc., can solve the problems of short service life of saggar, low softening temperature under load, poor thermal shock resistance, etc., and achieve good thermal shock resistance , The effect of improving the flexural strength at high temperature in the hot state and improving the thermal shock resistance

Inactive Publication Date: 2018-05-25
万燕杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to overcome the defects of the above-mentioned saggers such as short service life, deformation at high temperature, poor thermal shock resistance, and low softeni

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1 The percentage by weight is: 29% of andalusite particles, 25% of magnesium aluminate gel, 8% of zirconia micropowder, 20% of andalusite active micropowder, 15% of alumina micropowder aggregate, 3% of Suzhou soil, plus combined Agent 0.1%. The process steps are as follows: Stir the above-mentioned raw material components evenly in a vertical stainless steel mixer according to the weight percentage, put them into a mold, and cold press them with a 630-ton press to form them. Keep warm for 5 hours.

Embodiment 2

[0016] Example 2 Percentage by weight: 28% of andalusite particles, 25% of magnesium aluminate gel, 8% of zirconia micropowder, 20% of andalusite active micropowder, 16% of alumina micropowder aggregate, Suzhou soil 3%, plus 0.1% binder. The process steps are as follows: Stir the above-mentioned raw material components evenly in a vertical stainless steel mixer according to the weight percentage, put them into a mold, and cold press them with a 630-ton press to form them. Keep warm for 6 hours.

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PUM

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Abstract

The invention relates to a saggar with high thermal shock and long service life and a preparation method thereof. Andalusite particles, magnesium aluminate gel, calcium stabilized zirconia micro powder, andalusite active micro powder, alumina micro powder aggregate, Suzhou soil, and 0.1%-0.15% of an additional binder are used as raw materials, and the raw materials are mixed, shaped, dried, and finally calcined at a high temperature according to different weight percentages to prepare the product. The toughened saggar product containing zirconium andalusite overcomes the defects of short service life, low stability, low flexural strength and the like in the prior art. The saggar prepared by the method provided by the invention has the advantages of high high-temperature flexural strength,high thermal shock resistance, long service life and the like.

Description

technical field [0001] The invention belongs to the technical field of refractory material preparation, and mainly provides a zirconium-containing andalusite toughened sagger and a preparation method. Background technique [0002] A sagger is a firing device, which is often used in industry to produce ceramic products or high-temperature electronic tubes that require high-temperature calcination. Generally, the tunnel kiln is used, which is a continuous heating and sintering equipment. According to the process requirements of sintered products, the required temperature zone and power are arranged, and the products to be sintered are directly or indirectly placed in the sagger. The system moves the product with the kiln car according to the process requirements of the product, so as to complete the sintering of the product in the furnace. During this process, the sagger often has to withstand the high temperature of about 1300°C-1600°C, various redox atmospheres and the impa...

Claims

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Application Information

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IPC IPC(8): C04B35/18C04B35/66C04B35/622C04B35/80F27D5/00
CPCC04B35/18C04B35/622C04B35/66C04B35/803C04B2235/3206C04B2235/3217C04B2235/3222C04B2235/3246C04B2235/349C04B2235/5276C04B2235/5436C04B2235/656F27D5/0012
Inventor 万燕杰
Owner 万燕杰
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