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Cordierite ceramic powder and its synthesis method

A technology of cordierite powder and synthesis method, which is applied in the field of inorganic non-metallic materials, can solve the problems of high synthesis temperature, easy introduction of impurities, and high content of impurity phases, and achieve the effects of low synthesis temperature, low equipment requirements, and sufficient reaction

Active Publication Date: 2006-08-23
BEIJING AVIATION MATERIAL INST NO 1 GRP CORP CHINA AVIATION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When these systems synthesize powders, there are the following disadvantages: (1) There are many types of raw materials, on the one hand, it is easy to introduce impurities, on the other hand, it is easy to mix unevenly, causing component segregation, resulting in a higher final impurity content
(2) The synthesis temperature is higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh according to the ratio of chlorite: 35%, kaolin: 65%, put the weighed ceramic raw materials into a ball mill for dry ball milling and mixing, the ball-to-material ratio is 5:1, and the ball milling time depends on the original particle size of the powder. The ball milling time is 15 hours. The mixed ceramic raw materials are put into a sagger, placed in a calciner and heated to 1200° C., the holding time is 3 hours, and after cooling, the required cordierite ceramic powder is obtained. The calcined cordierite ceramic powder is ball milled and then passed through a 200-mesh sieve.

[0025] Example

[0026] Kaolin: 65%

[0027] Kaolin: 55%

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PUM

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Abstract

The invention provides a cordierite powder synthesizing formula and method for preparation, which is prepared by using natural green mud stone and kaolin as main raw material through the steps of mixing, sintering and disintegrating. The invention has the advantages of low cost of raw material, low synthetic temperature and easy control for synthesizing process.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, and relates to a preparation method of cordierite ceramic powder. The powder can be used as a refractory material and a raw material for preparing a honeycomb ceramic carrier of an automobile exhaust gas purifier, and belongs to the technical field of industrial ceramics or the technical field of environmental protection. Background technique [0002] The characteristics of ceramic powder have an important impact on the preparation process and microstructure of special ceramic materials, which in turn have a greater impact on the performance of ceramic components. Cordierite (Mg 2 al 4 Si 5 o 18 ) has low thermal expansion coefficient and dielectric properties, as well as high chemical stability, cordierite ceramics and glass-ceramics are widely used in occasions that require strict thermal shock and thermal expansion. For example, high-temperature furnaces, kiln furniture for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/195C04B35/622
Inventor 仝建峰陈大明李宝伟刘晓光华文君
Owner BEIJING AVIATION MATERIAL INST NO 1 GRP CORP CHINA AVIATION IND