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1. Product Composition and Structural Feature

1.1 Alumina Material and Crystal Stage Development


( Alumina Lining Bricks)

Alumina lining bricks are dense, engineered refractory ceramics primarily made up of aluminum oxide (Al â‚‚ O FOUR), with material commonly ranging from 50% to over 99%, directly affecting their performance in high-temperature applications.

The mechanical stamina, corrosion resistance, and refractoriness of these blocks boost with greater alumina concentration as a result of the development of a durable microstructure dominated by the thermodynamically stable α-alumina (diamond) stage.

Throughout production, forerunner materials such as calcined bauxite, integrated alumina, or synthetic alumina hydrate undertake high-temperature firing (1400 ° C– 1700 ° C), advertising stage makeover from transitional alumina forms (γ, δ) to α-Al Two O THREE, which shows outstanding hardness (9 on the Mohs scale) and melting point (2054 ° C).

The resulting polycrystalline framework contains interlocking corundum grains embedded in a siliceous or aluminosilicate lustrous matrix, the structure and quantity of which are meticulously controlled to balance thermal shock resistance and chemical longevity.

Minor additives such as silica (SiO â‚‚), titania (TiO TWO), or zirconia (ZrO â‚‚) might be introduced to change sintering habits, boost densification, or boost resistance to particular slags and fluxes.

1.2 Microstructure, Porosity, and Mechanical Integrity

The performance of alumina lining bricks is seriously depending on their microstructure, particularly grain dimension circulation, pore morphology, and bonding stage features.

Ideal bricks show great, consistently dispersed pores (shut porosity liked) and very little open porosity (

Alumina Technology Co., Ltd focus on the research and development, production and sales of aluminum oxide powder, aluminum oxide products, aluminum oxide crucible, etc., serving the electronics, ceramics, chemical and other industries. Since its establishment in 2005, the company has been committed to providing customers with the best products and services. If you are looking for high quality alumina silicon carbide, please feel free to contact us.
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