Refractory

High Aluminum Refractory Castable

  • Tuesday, 15 November 2022
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High Aluminum Refractory Castable

Refractory castables are designed with various performance parameters to satisfy the requirements of industrial processes. These parameters include the combination of raw materials, manufacturing technology, assembly techniques and application conditions. Castables are widely used as general purpose refractory materials and have excellent thermal shock and abrasion resistance. They are resistant to a range of chemical agents.

High aluminum refractory castable consists of fine aluminum aggregate, alumina powder and a binder. It is used for furnace lining and other industrial applications. It also has excellent corrosion resistance, thermal shock resistance and mechanical strength. It is mainly used in the steel and chemical industries.

High aluminum refractory castable has good thermal stability and is often used in power stations, heat treatment furnaces, and boilers. Its high aluminum content increases its strength and decreases its thermal conductivity, resulting in improved refractory properties. The composition of high aluminum refractory castable determines its bulk density.

High aluminum refractory castables are available in varying Alumina contents and a variety of manufacturing methods. Depending on the application, the casting can be shaped according to the desired thickness. Generally, high-alumina castables are produced in bags and packaged for storage. They are moisture-proof and waterproof treated for safe storage and transport. For optimum performance, the high aluminum refractory castable should be mixed fully before using.

Castables are made of various refractory materials, including fireproof granular materials. Adding microsilica to these materials improves their mechanical properties and is believed to improve their flow behavior. In addition, microsilica reduces the cement content of refractory castables. By reducing the amount of cement, the amount of open porosity in the castable is reduced by up to 15%.

High aluminum refractory castables have high mechanical strength and thermal shock resistance. They are widely used in the steel and chemical industries. Their high alumina content makes them an ideal lining material for furnaces. They have a density ranging from 2.5 to 2.8. The ratio of cement to refractory powder also plays a significant role in determining the performance of the refractory lining material. Increasing the cement content will improve pressure resistance at room temperature and linear shrinkage after burning.

Alumina cement is a commonly used refractory cement. It has a short setting time and provides a high hydraulically active setting effect. The amount of alumina in the cement will influence early strength and durability. However, there is a tradeoff between early and late strength.

High aluminum refractory castable is a versatile material that can be used for chimney lining. High aluminum refractory cements have excellent chemical resistance and can be abrasion resistant material. They are also used as linings for direct current induction heating furnaces. They are also used as a high-temperature abrasion-resistant lining material for a catalytic cracking tube reactor.

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