High-alumina brick is a kind of neutral refractory material. Its alumina content is as high as 80%. It has high refractoriness, strong thermal stability and good slag resistance. It is widely used in metallurgy, building materials, chemical industry and other industries.
- Al2O3:≥48-80%;
- Bulk Density: 2.1-2.7g/cm³;
- Refractoriness Under Load: 1420-1530ºC;
- Apparent Porosity: 19-26%;
- Standard size: 230*114*65mm;
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High Working Temperature
Good Thermal Stability
Strong Slag Resistance
Good Erosion and Corrosion Resistance
Specifications of Kerui High Alumina Refractory Brick
| Item | LZ-80 | LZ-75 | LZ-70 | LZ-65 | LZ-60 | LZ-55 | LZ-48 | |
|---|---|---|---|---|---|---|---|---|
| Al2O3, /% | ≥ | 80 | 75 | 70 | 65 | 60 | 55 | 48 |
| Apparent Porosity, % | ≤ | 21 | 24 | 24 | 24 | 26 | 22 | 22 |
| Cold Crushing Strength, MPa | ≥ | 70 | 60 | 55 | 50 | 45 | 45 | 40 |
| 0.2MPa Refractoriness Under Load, ℃ | ≥ | 1530 | 1520 | 1510 | 1500 | 1430 | 1450 | 1420 |
| Permanent Linear Change, % | 1500℃*2h -0.4~0.2 | 1450℃*2h -0.4~0.1 |
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Introduction of High Alumina Refractory Brick
- It is a neutral refractory material with an alumina Al2O3 content of more than 48%.
- Burned by raw materials with high aluminum or other alumina content.
- High thermal stability, fire resistance above 1770 ° C.
- The residual resistance is better, and it is used in the lining of the steelmaking electric furnace, glass furnace, and cement turning furnace.
Advantages of Kerui Alumina Refractory Bricks
- High refractoriness: The refractoriness is as high as 1750-1790 degrees Celsius.
- High load softening temperature: The high alumina content and low impurities make the load-softening temperature higher than that of clay bricks.
- Strong slag resistance: Alumina can well resist acidic and alkaline slag.
- Strong thermal shock resistance: The thermal expansion coefficient is low. It is not easy to deform at high temperatures.
- Strong mechanical properties: High alumina refractory bricks can better withstand compressive and flexural strength.
Applications of Kerui High Alumina Refractories Bricks
- Metallurgical industry: Blast furnaces, hot blast stoves, electric furnaces, open hearth furnaces, converters, melting furnaces, sintering furnaces, etc.
- Building materials industry: Cement kilns, glass kilns, ceramic kilns, refractory kilns, etc.
- Chemical industry: Chemical furnaces, reactors, pipelines, burners, etc.
- Power industry: Boilers, turbines, flues, dust collectors, etc.
