ZE XI MINERAL CO., LTD
Alumina Bubble / Alumina Hollow Ball
Alumina Bubble, also known as Alumina Hollow Ball, is a high-purity lightweight refractory aggregate produced from α–Al₂O₃. It features extremely low bulk density, excellent thermal insulation, high crushing strength, and outstanding resistance to high-temperature corrosion.
Technical Specifications
| Item | Specification |
|---|---|
| Al₂O₃ (%) | ≥99 |
| SiO₂ (%) | ≤0.3 |
| Na₂O (%) | ≤0.25 |
| Fe₂O₃ (%) | ≤0.15 |
| Refractoriness | 1800 °C |
| Bulk Density | 0.5–1.0 g/cm³ |
| Main Phase | α–Al₂O₃ |
| Particle Size | 0.2–5 mm |
Typical Particle Size Range
Standard sizes available:
0.2–1 mm | 1–2 mm | 2–3 mm | 3–5 mm
Customized size distribution is available upon request.
Main Characteristics
- High purity (≥99% Al₂O₃)
- Lightweight with excellent thermal insulation performance
- Low bulk density with high crushing strength
- Outstanding resistance to high-temperature corrosion and erosion
- Stable performance under extreme thermal conditions
Packaging
Standard packaging: 25 kg woven plastic bags or
1000 kg jumbo bags
Custom packaging available upon request.