High-purity cordierite-combined mullite material and preparation method thereof

A technology of purity cordierite and mullite, which is applied in the field of high-purity cordierite-combined mullite material and its preparation field, and achieves the effects of avoiding unstable product performance, long service life and low thermal expansion rate.

Inactive Publication Date: 2019-02-12
ZIBO GT INDAL CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Synthetic Morco is used as the aggregate, high-purity synthetic cordierite is used as the matrix, and compound organic additives are used to solve the molding performance without adding clay

Method used

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  • High-purity cordierite-combined mullite material and preparation method thereof
  • High-purity cordierite-combined mullite material and preparation method thereof
  • High-purity cordierite-combined mullite material and preparation method thereof

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Experimental program
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Embodiment Construction

[0034] The present invention will be further described below.

[0035] Machine press molding:

[0036] Raw materials: 0.044mm high-purity synthetic cordierite, 0.1-1mm synthetic Morco, magnesium lignosulfonate stock solution, carboxymethyl cellulose solution, polyvinyl alcohol solution;

[0037] Preparation:

[0038] (1) Mixing: add synthetic Morco and compound organic additives into the mixer, add an appropriate amount of water and stir evenly, add the synthetic cordierite fine powder into the mixer, and mix evenly to obtain a machine-pressed mud material ;

[0039] (2) Trapped material: The machine-pressed mud material is put into a sealed woven bag and trapped for more than 24 hours;

[0040] (3) Forming: machine press forming;

[0041] (4) Drying: put the formed bricks into a far-infrared drying oven for drying, the drying temperature is 120°C, and the temperature is kept for 24h;

[0042] (5) Firing: the firing temperature is 1350°C, and the temperature is kept for 6...

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Abstract

The invention belongs to the technical field of novel ceramic materials, and relates to a high-purity cordierite-combined mullite material and a preparation method thereof. Synthesized mullite is usedas aggregate, high-purity synthesized cordierite is used as matrix, a compound organic additive is used for solving formability, and no clay is added. The high-purity cordierite has higher high-temperature bending strength, lower thermal expansion coefficient and lower impurity content; the matrix of the cordierite-mullite material adopts the high-purity cordierite, and therefore the prepared cordierite-mullite material has the outstanding advantages of high high-temperature bending strength, low thermal expansion coefficient, high recycling frequency under high temperature, little deformation and long service life.

Description

technical field [0001] The invention belongs to the technical field of new ceramic materials, and relates to a high-purity cordierite-combined mullite material and a preparation method thereof. Background technique [0002] The production of modern ceramics is inseparable from kiln furniture materials. Cordierite-mullite refractories have low thermal expansion rate and good thermal shock resistance, and are widely used in modern ceramics industry. The ideal cordierite-mullite kiln furniture should have the advantages of many cycles of high temperature use without cracking, small deformation or no deformation. [0003] The common cordierite-mullite refractory products in China use mullite as the aggregate and clay powder, talc powder, cordierite powder with low purity, alumina powder, etc. as the matrix. After the matrix is ​​fired, mullite is formed. In order to improve high temperature strength (high temperature flexural strength), form in-situ cordierite to reduce thermal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/195C04B35/19C04B35/622C04B35/626
CPCC04B35/19C04B35/195C04B35/622C04B35/62605C04B2235/6022C04B2235/6567C04B2235/77C04B2235/96C04B2235/9607
Inventor 张晓峰孙文礼李玉强张瑛李志军史永鹏李凯李芳王倩倩杨舒琪
Owner ZIBO GT INDAL CERAMICS
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