Product detail
High Alumina Curved Brick
Product Introduction
High-alumina curved bricks are made of high-alumina bauxite as the main raw material, and are made through fine processing and high-temperature firing. The content of alumina (Al₂O₃) is usually above 48%, which gives the brick excellent high temperature resistance, wear resistance and erosion resistance. Its arc structure can perfectly fit the circular or arc-shaped furnace lining, ensuring that the furnace lining after masonry has good integrity and sealing.
Product Performance Characteristics
High refractoriness: The refractoriness of high-alumina curved bricks can reach 1750-1790℃, and can work stably for a long time in a high temperature environment, effectively resisting the damage of high temperature to the furnace lining.
High load softening temperature: Generally above 1420-1550℃, compared with ordinary clay bricks, it is less likely to deform when subjected to high temperature and heavy pressure, ensuring the stability of the furnace structure.
Good slag resistance: It has a certain resistance to acidic slag and alkaline slag, and can be used in furnaces in different chemical environments to extend the service life of the furnace lining.
High compressive strength: Depending on the alumina content, the compressive strength is generally 50-80Mpa, which can withstand the pressure inside the furnace and ensure that the furnace lining will not be easily damaged during use.
High thermal stability: It contains a large amount of mullite inside, with a perfect particle structure, which can maintain the stability of the wall under high temperature environment and reduce the risk of cracking caused by temperature changes.
Good wear resistance: The texture is hard, and it can effectively slow down the surface wear and improve the overall service life of the furnace when the medium frequently enters and exits.
Product application
Metallurgical industry
Iron ladle and steel ladle lining: High-aluminum curved bricks can withstand the scouring and erosion of high-temperature molten iron and steel. Its good thermal stability can prevent the brick body from breaking due to sudden temperature changes, ensure the safe use of iron ladle and steel ladle, and extend the life of the equipment.
Blast furnace and hot blast furnace lining: In the high temperature and high pressure environment of blast furnaces and hot blast furnaces, high-aluminum curved bricks provide reliable protection for the furnace body with their high refractoriness, high load softening temperature and slag resistance, ensuring the efficient operation of the furnace.
Building materials industry
Cement rotary kiln: The temperature of cement rotary kiln is high and the working conditions are complex during the production process. The wear resistance and corrosion resistance of high-aluminum curved bricks enable it to adapt to this harsh environment, effectively protect the kiln body and improve production efficiency.
Glass kiln: The lining used for glass kilns can resist the erosion and scouring of high-temperature glass liquid, ensure the stable operation of glass kilns, and ensure the quality of glass products.
Chemical industry: Chemical furnaces produce high temperature and corrosive gases during various chemical reactions. The chemical corrosion resistance and high refractoriness of high-aluminum curved bricks make them an ideal material for chemical furnace linings, which can effectively resist the erosion of chemical substances and ensure the safe progress of chemical production.
Product Parameters
| Ingredients | Content range | Function |
| Aluminum oxide (Al₂O₃) | ≥48% | Determines the high temperature resistance, wear resistance and erosion resistance of the brick body. The higher the content, the better the performance |
| Silicon dioxide (SiO₂) | – | Together with alumina, it forms the basis of aluminum-silicon refractory materials and affects the physical and chemical properties of the brick body |
| Iron oxide (Fe₂O₃) | Small amount | It has a certain impact on the performance of the brick body. Too high a content may reduce the refractory performance of the brick body |
| Other impurities | Trace amount | It affects the quality and performance of the brick body to a certain extent, and needs to be strictly controlled during the production process |
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