Product description
About Metallurgical-Grade Alumina
Metallurgical-grade (smelter-grade) alumina is the white, powdery aluminum oxide produced by refining bauxite. Aluminum smelters dissolve it in molten cryolite and reduce it electrolytically — the Hall-Héroult process — to make primary aluminum.
Smelters specify purity, impurity levels and physical properties such as particle size and surface area, because they affect cell performance and fume capture. Each parcel is confirmed against the smelter’s requirement.
Typical applications
- Primary aluminum smelting (Hall-Héroult)
- Dry scrubbing in smelter fume treatment
- Selected chemical and ceramic applications
Specifications to be confirmed
Specifications are agreed per transaction and confirmed in writing before any offer. The parameters below are the ones buyers typically require.
| Parameter | Value |
|---|---|
| Al₂O₃ content | To be confirmed |
| Impurities: Na₂O, Fe₂O₃, SiO₂, CaO | To be confirmed |
| Loss on ignition (LOI) | To be confirmed |
| Particle size and fines fraction | To be confirmed |
| Specific surface area (BET) | To be confirmed |
| Attrition index | To be confirmed |
Grades, dimensions and standards subject to confirmation. Nothing on this page is an offer to sell.
