High alumina brick is a kind of neutral refractory material. Its alumina content is as high as 80%. It has good high refractoriness. This brick is widely used in steelmaking electric furnaces, glass melting furnaces, cement rotary kilns and other high-temperature kinls. Ronghua , as the original manufacturer, offers a wide range of bricks, factory prices and professional services to 1000+ global partners.
- Refractoriness: Above 1770ºC;
- Al2O3:≥48-80%;
- Bulk Density: 2.1-2.7g/cm³;
- Refractoriness Under Load: 1420-1530ºC;
- Apparent Porosity: 19-26%;
- Size: 230*114*65mm (standard) and other sizes;
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High Working Temperature
Good Thermal Stability
Strong Slag Resistance
Good Erosion and Corrosion Resistance
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Specifications of Ronghua High Alumina Refractory Brick
Ronghua offers the following types. Besides, we also offer SK-36 and SK-38 high alumina bricks. Contact us for details.
| 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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Video of Ronghua Refractory Bricks
Introduction of Ronghua High Alumina Refractory Brick
- Raw material: Ronghua brick is a neutral refractory material with more than 48% content of Al2O3. The main raw materials are alumina clinker and bonded clay.
- Burning temperature: The high-quality raw materials are burned between 1500-1600°C and form bricks.
- Quality control: Ronghua has a strict quality control system, including raw materials quality testing, quality reports of high alumina bricks, etc.
- Production equipment: 400T-1000T presses, 2*168-meter natural gas tunnel kilns, etc.
- Features: It has high thermal stability. The fire resistance is above 1770 °C.
- Uses: The residual resistance is better, and it is used in the lining of the steelmaking electric furnace, glass furnace, and cement turning furnace.
- Shapes: Besides standard size (230*114*65mm), Ronghua offers side-arc shape, side-arc shape, anchor brick, arc brick, etc.
Advantages of Ronghua 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 fire clay brick.
- 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 Ronghua 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.
Global Partners of Ronghua High Alumina Refractories Bricks
Partners from over 50 countries have chosen Ronghua high alumina bricks. Our partners include RUSAL, CHALCO, ALBA, POSCO, PSM, and others. They have a high level of recognition for us and maintain long-term cooperation.
Contact Ronghua Refractory
Ronghua Refractory has more than 20 years of manufacturing and exporting refractory bricks. We have international certificates, patents of refractory bricks, and other certificates. We have strong production capacity and strict quality control system to guarantee the quality. Moreover, our professional manager and technical professionals will guide you to choose the suitable bricks and high-temperature construction. View some video on Ronghua YouTube.
