High-crystal mullite-iolite high-temperature industrial ceramic and production method for same

Abstract

The invention relates to a high-crystal mullite-iolite high-temperature industrial ceramic and a production method for the same. Raw materials comprise, by weight, 40-80 parts of main crystal phase materials, 20-60 parts of combined composite substrate materials and an appropriate amount of composite microcrystal nucleating agent. A roasting process of the production method includes a two-stage constant-temperature roasting method and a two-stage composite crystallization synthetic reaction characteristic enhancing process, wherein the two-stage constant-temperature roasting method includes the steps of performing constant-temperature heat preservation for 10-15 hours at the temperature of 200 DEG C, and performing constant-temperature heat preservation for 10-15 hours at the temperature of 500 DEG C; and the two-stage composite crystallization synthetic reaction characteristic enhancing process includes the steps of sintering for 10-15 hours under the ordinary pressure and at the temperature ranging from 1100 DEG C to 1150 DEG C, and sintering for 20-25 hours under the ordinary pressure and at the temperature ranging from 1420 DEG C to 1430 DEG C. A refractory product produced bythe method has the advantages of excellent oxidation resistance, high refractoriness, high usage temperature, low thermal expansion coefficient, high compression strength, hypobarism, excellent heat stability, anti-strip performance and high high-temperature bending strength. The process of the method has the advantages of simple process, low cost and suitability for mass production, and is applicable to preparing kiln furniture, industrial ceramics and structural materials.

Description

technical field [0001] The invention belongs to the technical field of preparation of high-temperature industrial ceramics, and in particular relates to a production technology of high-crystal mullite-cordierite high-temperature industrial ceramics—refractory kiln furniture, structural ceramics, and structural materials. Background technique [0002] In recent years, the global economy has developed towards integration, my country's economy has developed rapidly, people's living standards have continued to improve, and the requirements for the variety and quality of ceramic products have become higher and higher, which has promoted domestic electronics, magnetic materials, ceramics, building materials, and new products. The vigorous development of industries such as energy and glass-ceramics. With the successful research and development of new material ceramics and the upgrading of ceramic products, manufacturers have also continuously improved the sintering process and produ...

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Problems solved by technology

[0003] At present, a small number of scientific research institutions and manufacturers in China have listed the production technology of high-crystal mullite-cordierite high-temperature industrial ceramics "refractory kiln furniture, structural ceramics, and structural materials" as a major research project for development. There are deficiencies in production conditions, production technology, quality control, etc., and they are still in the experimental stage, failing to find the key to realize large-scale production of high-crystal mullite-cordierite high-temperature industrial ceramics, including refractory kiln furniture, structural ceramics, A Breakthrough in Structural Materials

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