Engineered for Hardness and High Alumina Refractoriness
Calcined Bauxite is an ultra-hard, high-density raw material produced by heating high-grade aluminum ore (bauxite) to high temperatures (1600°C–1700°C) in a rotary kiln. This process, known as sintering or calcination, transforms the hydrated aluminum oxides into hard, stable corundum and mullite phases, maximizing its mechanical hardness, thermal refractoriness, and abrasion resistance.
Key Features
- Extreme Mechanical Hardness: Features an incredibly high Polish Stone Value (PSV) and high resistance to mechanical wear and abrasion.
- High Alumina (Al2O3) Content: Provides superior refractoriness, enabling the material to withstand extreme chemical slag attack and high temperatures.
- High Bulk Density & Low Porosity: The high-temperature sintering creates a dense, tightly packed crystal matrix with exceptionally low water absorption.
- Chemical Corrosion Resistance: Highly inert and resistant to both acidic and basic slags in severe metallurgical environments.
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Industry Applications
| Industry | Primary Function | Benefits |
|---|---|---|
| Refractories | High-Alumina Raw Material | Ideal for high-temperature furnace linings, ladle bricks, and electric arc furnace roofs exposed to harsh slag. |
| Road Safety & Flooring | High Friction Aggregate (HFST) | Used on highways, intersections, and industrial floors to provide anti-skid surfaces with high wear resistance. |
| Abrasives | Blasting & Grinding Media | Functions as a heavy-duty abrasive raw material for sandblasting, grinding wheels, and polishing compounds. |
| Steel & Metallurgy | Slag Conditioner / Flux | Assists in slag formation, protection of furnace refractories, and chemical purification during melting. |
Pro Tip:For High-Friction Surface Treatments (HFST) on roads, calcined bauxite is the absolute benchmark material because its exceptional resistance to traffic polishing maintains critical tire grip and micro-texture far longer than standard aggregates.
Applications
Why Choose Our Calcined Bauxite?
Sourced from premium-grade aluminum ores and sintered at ultra-high rotary kiln temperatures, our calcined bauxite features an optimized alpha-alumina (Al2O3) composition and a highly dense corundum matrix. We maintain stringent quality controls to ensure high bulk density, minimal porosity, and maximum mechanical hardness (high Polished Stone Value). From critical anti-skid road surfacing to severe, slag-resistant refractory applications, our calcined bauxite offers the ultimate resistance against heavy abrasive wear and thermal degradation.