Corundum refractory brick, also known as alumina refractory brick, is a high-performance refractory material made from alumina and other raw materials. It has excellent high-temperature resistance, chemical stability, and wear resistance, making it an ideal material for high-temperature kiln linings and refractory furnace linings.
Corundum refractory brick can be classified into several grades: common corundum brick, high-purity corundum brick, corundum-spinel brick, and silicon corundum brick. The different grades have varying levels of alumina content, different mineral compositions, and different technical parameters. For example, common corundum brick usually has an alumina content of around 90%, while high-purity corundum brick can reach up to 99% alumina content.
Corundum refractory brick has excellent technical parameters, including high-temperature resistance, high compressive strength, and good thermal shock resistance. Its maximum operating temperature can reach up to 1800℃, with some grades even higher. Additionally, its compressive strength is above 70Mpa, making it highly resistant to deformation and wear. And its thermal shock resistance allows it to withstand rapid changes in temperature without cracking or breaking.
The production process of corundum refractory brick involves several steps, including material preparation, molding, drying, and firing. The raw materials, such as alumina powder, are first mixed and then molded into the desired shape. The molded products are then dried and fired in a kiln at high temperatures to achieve the desired strength and hardness.
In summary, corundum refractory brick is a high-performance refractory material that is widely used in many industries, including steel, cement, and glass manufacturing. It is an ideal material for high-temperature kiln linings and furnace linings due to its excellent technical parameters and production quality. With the development of new production technologies, the application of corundum refractory brick will become more and more extensive, contributing to the development of industry and technology.
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