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High quality andalusite brick:
Mainly used in the combined bricks, arch roof and straightsection of the hot-blast outlet.
Index:
Al2O3 % | ≥60 | |
Fe2O3 % | ≤0.8 | |
TiO2 % | ≤0.5 | |
K2ONa2O % | ≤0.6 | |
Impurity % | ≤0.7 | |
base impurity | ≤1.2 | |
Apparent porosity % | ≤20(22) | |
Mpa | ≥40(30) | |
Bulk density g/cm3 | ≥2.40(2.35) | |
0.2 Mpa refractory under load °C | 0.5% | ≥1470 |
2.0% | ≥1580 | |
Cold bending strength Mpa | ≥15 | |
Reheating linear change %, 1500°Cx4h | ±0.2 | |
Creeping, % 1450°C/20-50h/0.2Mpa | ≤0.2 | |
Thermal stability 1100°C,water cooling ,times | ≥20 | |
High quality andalusitebrick
High quality andalusite brick
