What is Aluminum Oxide?
Aluminum Oxide (Al2O3), also known as Alumina, is one of the hardest and most thermally stable industrial oxides available, with a melting point exceeding 2000°C and a hardness close to that of diamond on the Mohs scale (9 out of 10). It occurs in several crystalline forms, the most important commercially being Calcined Alumina (a stable, hard, high-purity form) and Activated Alumina (a porous, high-surface-area form used in adsorption applications).
Polychem Industries supplies Aluminum Oxide to abrasive manufacturers, refractory producers, ceramic companies, and water treatment plants across India and internationally. Its exceptional hardness, high melting point, and chemical inertness make it one of the most versatile industrial minerals across heavy industry and specialty applications.
Available Grades
| Grade | Form | Purity | Standard | Applications |
|---|---|---|---|---|
| Industrial Grade | White crystalline / granular powder | 95–99.5% depending on grade | Industrial | Abrasives, refractories, ceramics, water treatment |
Applications & Uses
Abrasives
One of the most widely used abrasive materials globally. Calcined Alumina is used in the manufacture of grinding wheels, sandpaper, polishing compounds, and cutting tools due to its extreme hardness and ability to maintain sharp cutting edges.
Refractories
A key raw material in high-alumina refractory bricks, castables, and monolithic linings for furnaces, kilns, and high-temperature industrial equipment, providing excellent resistance to thermal shock and chemical attack.
Ceramics & Technical Ceramics
Used in the production of technical ceramics, electrical insulators, spark plug insulators, and advanced ceramic components requiring high mechanical strength, electrical insulation, and thermal stability.
Water & Gas Treatment (Activated Alumina)
Activated Alumina is used as an adsorbent in water defluoridation, arsenic removal, and as a desiccant for drying gases and liquids in industrial dehydration processes due to its highly porous structure.
Catalyst & Catalyst Support
Used as a catalyst support material in petrochemical refining processes due to its high surface area, thermal stability, and resistance to chemical attack under demanding reaction conditions.
Coatings & Polishing Compounds
Used as a functional filler in coatings requiring hardness and wear resistance, and as a fine polishing compound for metal, glass, and optical surface finishing applications.
Technical Specifications
Aluminum Oxide — Key Properties
Why Source Aluminum Oxide from Polychem Industries?
- Calcined and Activated Alumina grades available for all application needs
- Certificate of Analysis available on request
- Consistent quality for abrasive, refractory and ceramic manufacturers
- Bulk supply capability for large production requirements
- Competitive pricing with reliable year-round availability
- Export documentation experience for international shipments
