1. Product Structure and Structural Quality

1.1 Alumina Material and Crystal Phase Advancement

( Alumina Lining Bricks)

Alumina lining blocks are dense, crafted refractory porcelains mostly made up of light weight aluminum oxide (Al two O THREE), with content normally varying from 50% to over 99%, directly influencing their performance in high-temperature applications.

The mechanical toughness, deterioration resistance, and refractoriness of these blocks increase with higher alumina concentration due to the advancement of a durable microstructure controlled by the thermodynamically secure α-alumina (diamond) phase.

During production, precursor products such as calcined bauxite, fused alumina, or synthetic alumina hydrate undergo high-temperature shooting (1400 ° C– 1700 ° C), advertising phase makeover from transitional alumina kinds (γ, δ) to α-Al Two O THREE, which exhibits phenomenal firmness (9 on the Mohs scale) and melting factor (2054 ° C).

The resulting polycrystalline structure contains interlocking diamond grains installed in a siliceous or aluminosilicate lustrous matrix, the structure and quantity of which are thoroughly regulated to stabilize thermal shock resistance and chemical longevity.

Small additives such as silica (SiO TWO), titania (TiO â‚‚), or zirconia (ZrO TWO) might be introduced to customize sintering actions, boost densification, or boost resistance to specific slags and fluxes.

1.2 Microstructure, Porosity, and Mechanical Stability

The efficiency of alumina lining bricks is critically depending on their microstructure, particularly grain dimension circulation, pore morphology, and bonding stage characteristics.

Ideal blocks exhibit great, evenly distributed pores (closed porosity liked) and marginal 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 translucent alumina, please feel free to contact us.
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