Product Description
Calcined Alumina is characterized by high chemical inertness and high melting point. It is widely used in refractory applications such as electrofused zirconia corundum, alumina bricks, alumina hollow spheres, various castables and ramming mixes for the steel industry, alumina refractory fibers, high alumina cements, and non-ferrous metallurgy.
Main Applications
- Electro-fused zirconia corundum
- Alumina bricks and monolithic refractories
- Alumina hollow sphere products
- Castables, ramming mixes, and gunning materials for the steel industry
- Alumina refractory fibers
- High alumina cement
- Non-ferrous metallurgy
Technical Parameters
| Item | ZX1A | ZX2 | ZX3 | ZX4 | ZX5 | ZX6 |
|---|---|---|---|---|---|---|
| Al₂O₃ (%) | ≥99.7 | ≥99.7 | ≥99.7 | ≥99.7 | ≥99.8 | ≥99.8 |
| SiO₂ (%) | ≤0.03 | ≤0.03 | ≤0.05 | ≤0.03 | ≤0.03 | ≤0.03 |
| Fe₂O₃ (%) | ≤0.02 | ≤0.02 | ≤0.02 | ≤0.01 | ≤0.01 | ≤0.01 |
| Na₂O (%) | ≤0.06 | ≤0.04 | ≤0.04 | ≤0.03 | ≤0.03 | ≤0.03 |
| Alpha-phase Conversion (%) | ≥95 | ≥95 | ≥95 | ≥95 | ≥96 | ≥96 |
| True Specific Gravity (g/cm³) | ≥3.95 | ≥3.95 | ≥3.95 | ≥3.95 | ≥3.96 | ≥3.96 |
| Primary Crystal Size (μm) | 1.2–1.5 | 1.7–1.9 | 2.0–2.3 | 2.5–2.7 | 2.8–3.0 | 3.1–3.3 |
| BET Surface Area (m²/g) | <2.0 | <0.8 | <0.7 | <0.6 | <0.5 | <0.45 |
| Appearance | White powder, free from lumps | |||||
| Particle Size | Customizable upon request | |||||
📦 Packaging & Storage
Packaging:
- 25 kg woven bag
- 1.25 MT jumbo bag
- 25 kg bag × 40 bags/pallet
Storage: Keep in a dry and ventilated area, away from moisture and contamination.