Andalusite firebrick is made of andalusite as raw material, sillimanite powder, mullite powder and other powder, adding binder in proportion, mixing, molding, drying and firing at high temperature.
Andalusite firebrick is made of andalusite as raw material, sillimanite powder, mullite powder and other powder, adding binder in proportion, mixing, molding, drying and firing at high temperature.
The Physcial and Chemcial Index of Andalusite Special Shaped Refractory Brick for Blast Furnace High Alumina Brick
Items | Andalusite Brick | ||
AL-55 Andalusite | AL-60 Andalusite | AL-65 Andalusite | |
Al2O3 % | ≥55 | ≥60 | ≥65 |
Fe2O3 % | ≤1.5 | ≤1.0 | ≤0.8 |
TiO2 % | ≤0.6 | ≤0.5 | ≤0.5 |
Bulk Density (g/cm3) ≥ | ≥2.30 | ≥2.40 | ≥2.50 |
Cold Crushing Srength MPA≥ | ≥50 | ≥55 | ≥60 |
≥1630℃ | ≥1650℃ | ≥1700℃ | |
The creep rate of 0.2 MPa H % (20 ~ 50) | 1500 ℃ ≤0.2 | 1500 ℃ ≤0.2 | 1500 ℃ ≤0.2 |
Permanent Linear change | 1500 ℃×4h ±0.2 | 1500 ℃×4h ±0.2 | 1500 ℃×4h ±0.2 |
Thermal shock stability, secondary (1100℃ water cooling) | 950℃ ≥30 | 950℃ ≥30 | 950℃ ≥30 |
Andalusite refractory brick performance
1, High temperature resistance, wear resistance, corrosion resistance.
2, Good thermal shock resistance.
3, Low creep rate.
4. High softening temperature under load.
5, Can reduce harmful impurities.
6. Good heat stripping resistance.
Andalusite brick Application:
The use of andalusite firebrick in hot blast furnace: hot blast furnace wall, lattice brick, furnace top, combustion chamber (andalusite low creep series)
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