High Alumina Brick 55-80% Refractory up to 1400℃ / 1500℃ / 1600℃ / 1700℃ Cement Kiln
Leadsun high alumina bricks are made from high-quality bauxite chamotte under advanced production techniques and strict quality inspection. With corundum and mullite as the main mineral phases, the bricks offer outstanding high-temperature strength, excellent chemical corrosion resistance, and long service life.
Technical data
| Item |
HA60 |
HA70 |
HA75 |
HA80 |
| AL2O3(%) |
≥60 |
≥70 |
≥75 |
≥80 |
| SIO2(%) |
32 |
22 |
20 |
≥18 |
| Fe2O3(%) |
≤2.5 |
≤2.0 |
≤1.8 |
≤1.5 |
| Refractoriness °C |
≥1750 |
≥1780 |
≥1800 |
≥1850 |
| Bulk density,g/cm3 |
2.35-2.4 |
2.45-2.5 |
2.5-2.55 |
2.75-2.8 |
| Softening temperature under load |
≥1450 |
≥1510 |
≥1520 |
≥1600 |
| Apparent porosity,% |
≤24 |
≤23 |
≤21 |
≤18 |
| Cold Crushing strength Mpa |
≥45 |
≥50 |
≥60 |
≥85 |
Key Advantages
- Excellent high-temperature resistance for continuous industrial use
- High alumina content ensures superior refractoriness and thermal stability
- High bulk density and low porosity for enhanced strength and durability
- Outstanding resistance to slag, erosion, and chemical corrosion
- Stable performance under severe thermal shock conditions
- Long service life, reducing furnace downtime and maintenance costs
- Suitable for steel, cement, glass, and metallurgical furnaces
- Cost-effective refractory solution with consistent quality
Features
- Reliable performance at elevated temperatures
- Dense structure with high bulk density
- Low iron content for enhanced refractoriness
- Excellent erosion resistance and long service life
Applications
- Steel and metallurgical furnaces
- Iron-making furnaces
- Glass production kilns
- Ceramic tunnel kilns
- Cement production kilns


