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| Refractory Bricks-Alkali Resistant Fire Clay Bricks For Cement Kiln |
| Alkali Resistant Fire Clay Bricks For Cement Kiln |
Technical Data
| Item | NJ-30 |
| Al2O3 % | 25-30 |
| SiO2 % | 60-70 |
| Fe2O3 % ≤ | 2.0 |
| Apparent porosity % ≤ | 25 |
| Cold crush strength Mpa > | 20 |
| 0.2 Mpa refractoriness under load (℃) | 1350℃ |
| Thermal shock resistance (1100℃,water) cycles | >10 |