GAA-MinRef supplies andalusite mineral for refractory and high-temperature applications. Its alumina content, thermal behaviour, and low reported iron level make it suitable for consideration in shaped and monolithic refractory formulations, subject to customer trials and formulation requirements.
| Component | Typical value | Specification where provided |
|---|---|---|
| Al₂O₃ | 58% | Minimum 57% |
| SiO₂ | 40% | — |
| Fe₂O₃ | 0.90% | Maximum 1.0% |
| TiO₂ | 0.15% | — |
| CaO | 0.15% | — |
| MgO | 0.15% | — |
| Na₂O | 0.20% | Combined alkalis: maximum 0.6% |
| K₂O | 0.40% | |
| L.O.I. | 0.55% | — |
| Property | Value |
|---|---|
| Bulk density | 1.7 g/cm³ |
| Specific gravity | 3.1 g/cm³ |
| Hardness | 7.5 Mohs |
| Available sizes | 0–1 mm and 1–3 mm |
| Standard packaging | 1 metric-tonne big bag |
