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| Refractory Bricks-Kaolinite Refractory Bricks For Blast Furnaces |
| Kaolinite Refractory Bricks For Blast Furnaces |
Technical Data
| Item | ZGN-42 | GN-42 |
| Al2O3 %≥ | 42 | 42 |
| Fe2O3 %≤ | 1.6 | 1.7 |
| Refractoriness:(℃) | 1760 | 1760 |
| 0.2mpa refractoriness under load ,℃≥ | 1450 | 1430 |
| Apparent porosity % ≤ | 15 | 16 |
| Linear change after reheating(1450℃×3h),% | -0.2 | -0.3 |
| Cold crush strength Mpa ≥ | 58.8 | 49.0 |