| Alumina-Magnesia and Alumina-Spinel Castable Refaractories | ||||||||
| Code | AM90T | AM90IU | AM90-2L | AM90-1 | AM90-2 | AM90L | AM70 | |
| Quality | Alumina-Mangnesia | Alumina-Mangnesia | Alumina-Mangnesia | Alumina-Spinel | Alumina-Mangnesia | Alumina-Spinel | Alumina-Spinel | |
| Max service temp ℃ | 1810 | 1850 | 1850 | 1850 | 1850 | 1850 | 1750 | |
| Bulk Density110℃×24h (g/cm3) | 3 | 3.05 | 3.1 | 3.05 | 3.1 | 3.1 | 2.9 | |
|
Modulus of Rupture (MPa) |
110℃×24h | 7 | 4 | 7 | 8 | 6 | 5 | 4 |
| 1000℃×3h | 5 | 5 | 7 | 10 | 8 | 4 | 5 | |
| 1500℃×3h | 10 | 12 | 10 | 15 | 10 | 11 | 12 | |
| Cold Crushing Strength (MPa) | 110℃×24h | 40 | 30 | 45 | 60 | 35 | 30 | 35 |
| 1000℃×3h | 50 | 40 | 55 | 80 | 60 | 25 | 40 | |
| 1500℃×3h | 70 | 80 | 65 | 90 | 80 | 70 | 80 | |
| (%)Permanent Linear Change | 1000℃×3h | ±0.05 | - | ±0.1 | ±0.1 | - | ±0.1 | - |
| 1500℃×3h | 0-+2.0 | 0-+1.5 | 0-+2.5 | 0-+2.0 | 0-+1.5 | 0-+1.0 | 0-+0.5 | |
| (%)Chemical Analysis | Al2O3≥ | 88 | 88 | 88 | 90 | 87 | 90 | 70 |
| MgO | 6-8 | 6-8 | 7-9 | 4-6 | 4-6 | 4-6 | 14-20 | |
| SiO2≤ | 1 | 1 | 1 | 1.2 | 2 | 0.6 | 2.5 | |
| Grain Size % | Top Size mm | 15 | 15 | 15(8) | 8 | 15(8) | 15(8) | 8 |
| less than 75um ≥ | 26 | 27 | 28 | 28 | 29 | 27 | 28 | |
| Additive water(casting) (%) | 5.0-5.4 | 5.4-5.8 | 5.2-5.6 | 5.3-5.8 | 4.6-5.2 | 4.8-5.2 | 6.4-6.8 | |
| Application Area for example | De-Si tiling runner for blast furnace | Lance for steel refining(IR-UT, stirring Ar attached | Working lining for big steel ladle | The impacting zone,weel for steel ladle | The impacting zone for steel ladle | Working lining for steel ladle | RH snorkel | |