Products
High Alumina Brick
• Density: 2.2-2.7g/cm³
• Raw Material: 90-95% alumina clinker + clay binder
• Firing temperature: 1500–1600°C;
• Refractoriness: 1750–1790°C
• Working temperature: ≤1500°C
• Function: High Refractoriness & Thermal Stability & Mechanical Strength & Slag Resistance & Long Service Life
Product Introduction
High Alumina Brick is a premium refractory material made from high-quality bauxite with an alumina (Al₂O₃) content exceeding 48%. It offers high refractoriness, excellent thermal stability, superior compressive strength, and strong resistance to slag and abrasion, making it suitable for prolonged service under high-temperature conditions.
Applications include blast furnaces, hot blast stoves, rotary kilns, cement kilns, lime kilns, glass furnaces, and various industrial heating equipment. High alumina bricks are widely used as furnace linings, walls, roofs, and other critical refractory structures in the steel, cement, metallurgy, and chemical industries.
Feature:
- High refractoriness.
- High temperature strength.
- High thermal stability.
- Neutral refractory.
- Good resistance to acid and basic slag corrosion.
- High refractoriness under load.
- High temperature creep resistance
- Low apparent porosity
Application:
High Alumina Bricks are suitable for a wide range of high-temperature industrial applications, including:
- Blast Furnaces
- Hot Blast Stoves
- Steel Ladles
- Reheating Furnaces
- Cement Kilns
- Tunnel Kilns
- Boilers
- Coke Ovens
- Carbon Furnaces
- Glass Furnaces
- Steelmaking Furnaces
- Other Industrial Kilns and Thermal Equipment
They are widely used in the steel, cement, glass, metallurgy, chemical, and power industries.
Technical Data:
| High Alumina Refractory Brick Physical and Chemical Index: | ||||||
| Item | Properties | |||||
| HA-80 | HA-75 | HA-65 | HA-55 | HA-48 | ||
| Al2O3 (%) | 80 | ≥75 | ≥65 | ≥55 | ≥48 | |
| Refractoriness (°C ) | ≥1790 | ≥1790 | ≥1790 | ≥1770 | ≥1750 | |
| Bulk density (g/cm3) | 2.65 | 2.5 | 2.45 | 2.4 | 2.3 | |
| Softening temperature under load (°C ) | 1530 | ≥1520 | ≥1500 | ≥1470 | ≥1420 | |
| Reheating Linear changes Rate (%) | 1500°CX2H | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| 1450°CX2H | -0.4 | -0.4 | -0.4 | -0.4 | -0.4 | |
| Apparent porosity (%) | 22 | ≤23 | ≤23 | ≤22 | ≤22 | |
| Cold crushing strength (Mpa) | 55 | ≥50 | ≥45 | ≥40 | ≥35 | |
| Application | steel furnace, glass furnace, sodium silicate furnace, ceramic shuttle kiln, cement rotary kiln, blast furnace, electric furnace, blast furnace and reverberatory furnace. | |||||