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Cordierite-mullite kiln furniture material with high thermal shock resistance

A mullite kiln and cordierite technology, which is applied in the field of cordierite-mullite kiln furniture materials with high thermal shock resistance, can solve the problems of short life, cracking and damage of kiln furniture materials, and achieve high porosity and firing The effect of uniform temperature and small volume density

Inactive Publication Date: 2016-06-15
天津创导热材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, cordierite-mullite is not suitable for rapid cooling and heating at high temperatures. Generally speaking, cordierite-mullite material kiln furniture is often used for temperature changes from 1250 degrees to room temperature in a cycle of more than 4 hours, and for those that require less than 4 hours Hours or even 1 hour period of rapid cooling and heating, kiln furniture materials are prone to cracking and damage, and the service life is very short

Method used

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  • Cordierite-mullite kiln furniture material with high thermal shock resistance
  • Cordierite-mullite kiln furniture material with high thermal shock resistance
  • Cordierite-mullite kiln furniture material with high thermal shock resistance

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Embodiment Construction

[0040] Below in conjunction with embodiment the present invention is described in further detail.

[0041] Formula: cordierite clinker 20%, cordierite-mullite kiln furniture waste blank 20%, floating beads 10%, talc 10%, alumina 5%, clay 23%, clay clinker 10%, wood powder 2% , plus 0.3% yellow dextrin.

[0042] Mixing: According to the process mentioned above, add water at a ratio of 8% (solid content as the basis) to prepare a mixture, and seal and trap the material for 24 hours.

[0043] Forming: single-sided hydraulic forming, with 180KGF / CM 2 The pressure is used to form it, and the solid shed board green body of 398*398*14.9mm is obtained. The green body can be moved by hand and is very strong.

[0044] Drying: Dry according to the process mentioned above.

[0045] Firing: In a tunnel kiln, 6 blocks are stacked vertically, at 1370°C, and kept warm for 6 hours to fire to obtain shed slab kiln furniture of 400*400*15mm.

[0046] Internal structure analysis:

[0047] f...

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Abstract

The invention relates to a cordierite-mullite kiln furniture material with high thermal shock resistance and belongs to the field of the kiln furniture material. According to the kiln furniture material, floating beads, cordierite clinker, cordierite-mullite waste blanks, chamotte clay and wood meal are taken as aggregate, talc, aluminum oxide and clay are taken as a substrate material, a solid substance of the kiln furniture material is prepared from the aggregate, the substrate material and an additive yellow dextrin, water is added to the solid substance and is stirred, and a mixture is formed. After optimization, the requirement that the final composition is consistent with the composition of the cordierite-mullite kiln furniture material in the market is met, and the firing temperatures also keep consistent; the material has the advantages that the expansion factor is low, the number of thermal shock times is large, the volume density is low and the strength is high, and the material is suitable for being used as the excellent cordierite-mullite kiln furniture material with high thermal shock resistance.

Description

technical field [0001] The invention relates to a kiln furniture material, in particular to a cordierite-mullite kiln furniture material with high thermal shock resistance. Background technique [0002] As kiln furniture used to support fired products, it is required to be able to withstand rapid cooling and rapid heating, that is, to have good thermal shock resistance and low energy consumption. After continuous trials by many manufacturers, cordierite kiln furniture has gradually shown its unique advantages. Cordierite is the mineral with the lowest coefficient of thermal expansion among the known silicate minerals. Therefore, products with cordierite as the main crystal phase have good resistance to rapid cooling and rapid heating, but only a single cordierite material has high temperature resistance. Poor performance and low refractoriness, it is necessary to compound mullite crystal phase to achieve composite high-quality performance of high temperature resistance and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/08C04B38/06C04B35/66C04B35/195C04B35/185
CPCC04B38/08C04B35/185C04B35/195C04B35/66C04B2235/3217C04B2235/3445C04B2235/349C04B2235/606C04B2235/77C04B2235/96C04B2235/9607C04B38/0665
Inventor 夏霞云钱玉良汪崇富张卫国
Owner 天津创导热材料有限公司
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