Refractory Materials
SINTERED SPINEL
It’s made of industrial alumina or natural superfine bauxite and high-purity caustic Calcined Magnesite powder by high-pressure sintering and fine grinding in UHT converter, characterized by big hardness, small coefficient of thermal expansion, etc. it is ideal raw material of ladle castable and magnesium-spinel bricks. It’s extensively applied to the lining of converter, glass kiln, open hearth, casting ladle etc.
| ITEM | S.SPINEL 90 | S.SPINEL 75 | S.SPINEL 65 | S.SPINEL 60 | S.SPINEL 50 |
| Al₂O₃(%)≤ | 87-90 | 75-77 | 64-66 | 58-62 | 49-51 |
| MgO(%)≥ | 8-11 | 22-24 | 32-34 | 28-32 | 48-50 |
| CaO(%) | 0.25 | 0.30 | 0.50 | 1.5 | 0.65 |
| SiO₂(%)≤ | 0.18 | 0.2 | 0.3 | 0.30 | 0.35 |
| Fe₂O₃(%)≤ | 0.17 | 0.2 | 0.3 | 0.2 | 0.4 |
| Bulk Density (g/cm³)≥ | 3.26 | 3.3 | 3.25 | 3.15 | 3.25 |
| SIZE | 0-30mm or required | ||||
