Refractory

High Alumina Refractory Bricks

High Alumina Refractory Bricks

  • Wednesday, 22 June 2022
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High Alumina Refractory Bricks

High alumina refractory bricks are a type of refractory brick with an aluminum oxide content of 92 percent or higher. High alumina bricks are referred to as "refractory refractories" because they are considered the strongest bricks. They should last for a longer period of time. Listed below are several advantages of using these bricks.

High alumina bricks are made by mixing non-active alumina-rich material with a finely divided alumina binder. This binders has a specific surface of between 50-200 m2/g. The properties of high alumina bricks are similar to those of sand-lime bricks. Both types are used in high-temperature furnaces.

A high alumina refractory brick contains more than fifty percent alumina by weight. High alumina refractory bricks are made by forming a damp mixture of alumina rich material and a binding agent comprising five to fifty percent finely divided alumina. The mixture is then dried to prevent crack formation during the steam hardening process. The steam hardening process occurs between 160°C and 230°C.

Cracks in high alumina refractory brick can occur during the manufacturing process, during the firing process, or afterward. The reasons for these defects are multifold. Cracks can occur as a result of high-alumina bricks containing low-melting materials. When high alumina bricks are molded in a mold, the low-melting materials may mix with them during the process, causing the bricks to lose their refractory properties.

RS Company is a professional supplier of high alumina refractory brick. The company has a wealth of experience in the manufacturing of refractory materials, and its advanced production line produces high-quality refractory bricks. The advanced production line has a high production rate and 80,000 tons of refractory bricks per year. In addition, its technical team has over a decade of experience in manufacturing monolithic refractories.

When selecting high alumina refractory brick, look for its melting point. The higher the melting point, the better the refractory brick is at resisting acidic slags. If you're not sure, check the impurities of the bricks, which can affect creep resistance. In addition, mullite crystals increase load resistance. If you're looking for high alumina refractory bricks, look for these three features in a manufacturer.

The main difference between high alumina refractory brick and clay refractory brick is that alumina is used in the production of these products. The alumina content is greater than forty-five percent, which makes them better than clay bricks. High alumina bricks are also used in glass melting tanks. Ultimately, their refractoriness makes them a better option for many applications.

High alumina bricks are neutral refractory bricks with a high percentage of Al2O3. This material resists basic and acid slag erosion. Its low iron content makes it ideal for a wide range of industrial processes. Because high alumina bricks are durable, they last longer than conventional fire bricks. These bricks are more energy-efficient and are resistant to friction.

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