| CHEMICAL PROPERTIES | LB 28 | LB 45 | LB 50 |
|---|---|---|---|
| Al 2 O3 (%) | 26-28 | 42-45 | 50 |
| SiO 2 (%) | 64-65 | 51 | 45 |
| Fe 2 O3 (%) | >1.8 | >1.3 | >1.8 |
| PHYSICAL PROPERTIES | LB 28 | LB 45 | LB 50 |
|---|---|---|---|
| Hot Face Temperature (°C) (Max) | 1100 | 1400 | 1500 |
| Bulk denisty. (gm/c) | 2 | 2.15 | 2.30 |
| Apparent porosity (%) | >15 | >21 | >24 |
| Cold Crushing Strength ( M.Pa) | 24.5 | 34.32 | 34.32 |
| Thermal conductivity (w/m°K) at 1000°C Hot Face temp. | 1.1 | 2.5 | 3 |
| Spalling Resistance ( Thermal Scoks ) at 1000°C , water colling | <20 Cycle | <20 Cycle | <20 Cycle |
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