Alumina Ceramic Catalysts: Structurally Engineered Supports for Heterogeneous Catalysis and Chemical Transformation alumina technologies inc
1. Product Structure and Structural Characteristic
1.1 Alumina Material and Crystal Phase Development
( Alumina Lining Bricks)
Alumina lining bricks are thick, crafted refractory ceramics mainly made up of light weight aluminum oxide (Al ₂ O ₃), with material typically varying from 50% to over 99%, directly affecting their performance in high-temperature applications.
The mechanical strength, corrosion resistance, and refractoriness of these bricks raise with greater alumina focus because of the advancement of a durable microstructure dominated by the thermodynamically stable α-alumina (diamond) stage.
During manufacturing, forerunner products such as calcined bauxite, fused alumina, or artificial alumina hydrate go through high-temperature firing (1400 ° C– 1700 ° C), promoting stage improvement from transitional alumina forms (γ, δ) to α-Al ₂ O THREE, which shows exceptional hardness (9 on the Mohs scale) and melting factor (2054 ° C).
The resulting polycrystalline structure includes interlacing diamond grains installed in a siliceous or aluminosilicate glazed matrix, the composition and volume of which are meticulously managed to balance thermal shock resistance and chemical resilience.
Small additives such as silica (SiO ₂), titania (TiO ₂), or zirconia (ZrO ₂) may be presented to customize sintering habits, improve densification, or enhance resistance to particular slags and changes.
1.2 Microstructure, Porosity, and Mechanical Honesty
The efficiency of alumina lining bricks is seriously dependent on their microstructure, specifically grain size circulation, pore morphology, and bonding stage attributes.
Optimal bricks display fine, evenly dispersed pores (closed porosity chosen) and minimal open porosity (
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1. Product Structure and Structural Characteristic 1.1 Alumina Material and Crystal Phase Development ( Alumina Lining Bricks) Alumina lining bricks are thick, crafted refractory ceramics mainly made up of light weight aluminum oxide (Al ₂ O ₃), with material typically varying from 50% to over 99%, directly affecting their performance in high-temperature applications. The mechanical…