Andalusite brick
Andalusite brick uses corundum and andalusite as the main raw materials.It has the features of high crushing strength,high thermal stability,good creep resistance and good thermal shock resistance.Andalusite bricks are mainly used in the combined bricks arch roof and straight section of the hot blast furnace.It can also be used in the cooling wall of blast furnace,chemical and ceramic industry,the door of cook oven or as the lining and checker of hot blast furnace.
Technical Properties
High Alumina Based Andalusite Refractory Brick Characteristics:
High Cold Crushing Strength
Good Thermal Stability
Good Creep Resistance
Good Thermal Shock Resistance
High Alumina Based Andalusite Refractory Brick Application:
Andalusite Refractory Bricks are mainly used in the combined bricks arch roof and straight section of the hot blast furnace.It can also be used in the cooling wall of blast furnace,chemical and ceramic industry,the door of cook oven or as the lining and checker of hot blast furnace.
High Alumina Based Andalusite Refractory Brick Technical Data Sheet:
| Item | H-55 | H-62 | H-65 |
| Al2O3 (%) | ≥55 | ≥62 | ≥65 |
| Fe2O3 (%) | ≤1.2 | ≤1.2 | ≤1.2 |
| Apparent Porosity (%) | ≤17 | ≤17 | ≤17 |
| Bulk Density (g/cm3) | ≥2.45 | ≥2.50 | ≥2.50 |
| Cold Crushing Strength (MPa) | ≥60 | ≥60 | ≥60 |
| Creep Rate (20-50h), 0.2MPa (%) | 1350℃ <0.2 | 1400℃ <0.2 | 1450℃ <0.2 |
| Refractoriness Under Load (℃) | ≥1600 | ≥1650 | ≥1680 |
| Thermal Expansion Coefficient (1000℃) (%) | ≤0.55 | ≤0.55 | ≤0.55 |
