1. Product Make-up and Structural Characteristic
1.1 Alumina Web Content and Crystal Stage Advancement
( Alumina Lining Bricks)
Alumina lining bricks are thick, crafted refractory ceramics mainly composed of light weight aluminum oxide (Al ₂ O SIX), with material normally varying from 50% to over 99%, directly influencing their efficiency in high-temperature applications.
The mechanical toughness, corrosion resistance, and refractoriness of these blocks raise with higher alumina focus because of the advancement of a durable microstructure dominated by the thermodynamically stable α-alumina (corundum) stage.
Throughout production, precursor products such as calcined bauxite, merged alumina, or artificial alumina hydrate undertake high-temperature firing (1400 ° C– 1700 ° C), advertising stage makeover from transitional alumina forms (γ, δ) to α-Al Two O ₃, which exhibits outstanding hardness (9 on the Mohs range) and melting point (2054 ° C).
The resulting polycrystalline structure consists of interlacing diamond grains embedded in a siliceous or aluminosilicate glazed matrix, the make-up and volume of which are very carefully controlled to balance thermal shock resistance and chemical durability.
Small ingredients such as silica (SiO TWO), titania (TiO ₂), or zirconia (ZrO ₂) might be introduced to modify sintering habits, improve densification, or enhance resistance to details slags and fluxes.
1.2 Microstructure, Porosity, and Mechanical Integrity
The performance of alumina lining bricks is seriously depending on their microstructure, especially grain size circulation, pore morphology, and bonding stage features.
Optimal blocks display great, uniformly dispersed pores (closed porosity liked) and minimal 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 polycrystalline alumina, please feel free to contact us.
Tags: Alumina Lining Bricks, alumina, alumina oxide
All articles and pictures are from the Internet. If there are any copyright issues, please contact us in time to delete.
Inquiry us
