Aluminium Oxide (Alumina)
Al₂O₃ | CAS: 1344-28-1 | HS: 28181000
Product Description
Aluminium Oxide (Alumina) is one of the most important technical ceramics and industrial minerals — combining exceptional hardness, high melting point (2072°C), chemical inertness, and electrical insulating properties across refractory, abrasive, ceramic, and catalyst applications. Calcined alumina is the precursor to aluminium metal (via the Bayer process) and the feedstock for alumina ceramics, abrasives, and catalyst supports. Activated (low-soda) alumina is a high-surface-area material used as a catalyst, catalyst support, and desiccant. MITCHEM supplies calcined and activated grades with full specifications for ceramic, refractory, and catalyst applications.
Applications by Industry
High-purity calcined and tabular alumina is the primary refractory raw material for alumina bricks, castables, and monolithic refractories in steel, cement, glass, and petrochemical furnaces.
White fused alumina is the premium abrasive grain for precision grinding wheels, coated abrasives, and lapping compounds for hardened steel, stainless, titanium, and ceramic grinding.
High-purity alumina (99%+) is the dominant technical ceramic material for electrical insulators, IC substrates, wear-resistant components, and biomedical implants.
Activated alumina provides the high surface area (200–300 m²/g) support for heterogeneous catalysts in petrochemical processing, including Claus process sulphur recovery and HDS catalysts.