Andalusite and sillimanite saggar and preparation method thereof

A technology of andalusite and sillimanite, which is applied in the field of andalusite sillimanite saggar and its preparation, can solve the problems of low softening temperature under load, short service life of saggar, poor thermal shock resistance, etc. Good thermal shock resistance and the effect of improving thermal shock resistance

Inactive Publication Date: 2018-06-29
万燕杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose 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 load softening temperature, and provide a sagger with low production cost, high high-temperature flexural strength, and long service life. Preparation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1 By weight percentage: 29% of andalusite particles, 25% of sillimanite particles, 8% of zirconia micropowder, 20% of andalusite active micropowder, 15% of alumina micropowder aggregates, 3% of Suzhou soil, plus binder 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 sillimanite particles, 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. After natural drying, they are calcined at 1480°C in a 20m-long high-temperature pusher oil kiln. , and keep warm for 6 hours.

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Abstract

The invention relates to an andalusite and sillimanite saggar and a preparation method thereof. The andalusite and sillimanite saggar is prepared from andalusite granules, sillimanite granules, zirconium oxide micro-powder, andalusite active micro-powder, aluminum oxide micro-powder aggregates and ball clay as main raw materials according to different weight percent through the steps of mixing, forming, drying and final high-temperature calcination. The andalusite and sillimanite saggar product overcomes the defects of short service life, poor stability, low breaking strength and the like in the prior art. The saggar prepared by the preparation method provided by the invention has the advantages of high breaking strength at high temperature, good thermal shock resistance, long service lifeand the like.

Description

technical field [0001] The invention belongs to the technical field of refractory material preparation, and mainly provides an andalusite sillimanite 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 impact of instantaneou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/185F27D5/00
CPCC04B35/66C04B35/185C04B2235/3244C04B2235/349C04B2235/96F27D5/0012
Inventor 万燕杰
Owner 万燕杰
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