High Alumina Bricks
High Alumina Bricks,high temperature performance, great corrosion
and wear resistance, high bulk density
High Alumina Bricks are produced with select bauxite chamotte as
main raw material, fired at 1450-1470 °C by advanced process with
strict quality control.
High Alumina bricks have great features like high temperature
performance, great corrosion and wear resistance, high bulk
density, low iron content, etc. High Alumina bricks are extensively
used in mining, metallurgy, cement, and chemical, refinery and
refractory industries.
These bricks are used in all kinds of industrial furnaces and high
temperature areas to prolong the lives of furnaces.
We distributes High Alumina Bricks of the best quality at the most
competitive prices worldwide.
Typical High Alumina Bricks Technical Data Specs
Technical data for other firebricks are available upon request.
| High Alumina Bricks | HA60 | HA70 | HA75 | HA80 |
| Al2O3 (%) | ≥ 60 | ≥ 70 | ≥ 75 | 78-80 |
| SIO2 (%) | 32 | 22 | 20 | ≥ 18 |
| Fe2O3 (%) | ≤ 1.7 | ≤ 2.0 | ≤ 1.8 | ≤ 1.8 |
| Na2O+K2O (%) | < 2.3 | < 2.0 | < 1.2 | / |
| Refractoriness | >1790 | >1800 | >1825 | ≥ 1850 |
| Refractoriness under load 0.2MPa (°C) | 1450 | >1510 | >1530 | ≥ 1550 |
| Porosity (%) | 22 | <22 | <21 | 20 |
| Bulk density (g/cm³) | 2.33 | 2.43-2.48 | 2.40-2.50 | 2.55 |
| Cold crushing strength (MPa) | ≥ 45 | ≥ 50 | ≥ 54 | ≥ 60 |
REFRACTORY BRICKS HIGH ALUMINA ZBHT SERIES
| LZ-48 | LZ-55 | LZ-65 | LZ-70 | LZ-75 | LZ-80 | LZ-85 |
| Al2O3 (%) | ≥48 | ≥55 | ≥65 | ≥70 | ≥75 | ≥80 | ≥85 |
| Fe2O3 (%) | ≤2.5 | ≤2.5 | ≤2.0 | ≤2.0 | ≤2.0 | ≤2.0 | ≤1.8 |
| Refractoriness (°C) | 1760 | 1760 | 1770 | 1770 | 1770 | 1790 | 1790 |
| Apparent porosity (%) | ≤23 | ≤23 | ≤23 | ≤23 | ≤23 | ≤22 | ≤22 |
| Bulk density (g/cm3) | 2.30 | 2.35 | 2.40 | 2.40 | 2.46 | 2.68 | 2.72 |
| Refractoriness under load 0.2MPa (°C) | 1420 | 1470 | 1500 | 1510 | 1520 | 1530 | 1550 |
| Cold crushing strength (MPa) | 45 | 45 | 50 | 60 | 60 | 65 | 70 |
| Permanent linear change (%) | 1500 °C × 2h | -0.4 to 0.1 | -0.4 to 0.1 | -0.4 to 0.1 | -0.4 to 0.1 | -0.4 to 0.1 | -0.4 to 0.1 | -0.4 to 0.1 |
REFRACTORY BRICKS HIGH ALUMINA KFTN SERIES
| High Alumina Bricks | Chemical Composition | Physical Indexes |
| Al2O3 | SiO2 | Fe2O3 | TiO2 | Bulk Density | Apparent porosity (%) | Cold Crushing Strength (MPa) |
| SK-36 | ≥50% | | ≤3.0% | | ≥2.25 | ≤26 | ≥25 |
| A-10 | ≥60% | | ≤2.0% | | ≥2.50 | ≤20 | ≥40 |
| SK-38 | ≥70% | | ≤2.0% | | ≥2.45 | ≤24 | ≥35 |
| DL-70B | ≥70% | ≤23% | ≤2.2% | ≤3.5% | ≥2.55 | ≤24 | ≥45 |
| DL-70M | ≥70% | | ≤2.0% | | ≥2.6 | ≤20 | ≥50 |
| SA-38 | ≥70% | | ≤1.5% | | ≥2.6 | ≤20 | ≥50 |
| SAL-70 | ≥70% | | ≤1.5% | | ≥2.6 | ≤20 | ≥60 |
| SAL-75 | ≥75% | | ≤1.5% | | ≥2.7 | ≤20 | ≥60 |
| DL-80B | ≥80% | ≤15% | ≤2.0% | ≤3.5% | ≥2.8 | ≤23 | ≥50 |
| VR-85 | ≥82% | ≤12% | ≤1.8% | ≤3.8% | ≥2.7 | ≤22 | ≥50 |
| AL-C85 | ≥82% | | | | ≥2.9 | ≤19 | ≥96 |
| DL-85B | ≥83% | ≤11% | | | ≥2.8 | ≤22 | ≥60 |
| NWB-85AR | ≥85% | | ≤2.0% | | ≥2.95 | ≤17 | ≥80 |
| SAL-85 | ≥84% | | ≤1.0% | | ≥2.85 | ≤20 | ≥60 |
