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2023
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What are the types and performance characteristics of refractory materials for aluminum melting furnace
What are the types and performance characteristics of refractory materials for aluminum melting furnace? Aluminum melting furnace is mainly divided into reverberatory furnace, crucible furnace and induction furnace. However, the reverberatory furnace has been widely used in China's aluminum processing industry, with the advantages of large capacity, high thermal efficiency and convenient operation.
What are the types and performance characteristics of refractory materials for aluminum melting furnace? When the aluminum melting furnace is built, corundum wear-resistant castables, light insulating bricks and dry impervious materials are usually used. Most refractories used in boilers are made of corundum, silicon nitride and silicon carbide. The aluminized reverberatory furnace in contact with the lining of the aluminum melting furnace is usually made of high-alumina bricks. If the metal aluminum with high purity is melted, the alumina content of the high-alumina brick used is about 80-85%. Mullite bricks and corundum bricks will be selected for masonry. However, some factories choose to use silicon carbide bonded silicon carbide bricks in erosion and wear areas, such as furnace chamber and used aluminum.
The aluminum outlet of the aluminum melting tank and furnace is relatively heavy, and the aluminum melt is also relatively heavy. Therefore, it is usually made of silicon carbide nitride bricks freely bonded or bonded with silicon oxynitride, and is lined with zircon bricks under special circumstances. When the aluminum outlet is under construction, the vacuum casting refractory fiber cone will have better effect. The lining of non-contact aluminum furnace is usually made of clay bricks or refractory castables. Of course, in order to accelerate melting and save energy, brick insulation or lightweight insulating casting products are also used for insulation construction.
What are the types and performance characteristics of refractory materials for aluminum melting furnace? When it comes to aluminum melting furnace using corundum wear-resistant castables, the main reason is that corundum wear-resistant castables are refractory materials with high aluminum content and high purity. It has good wear resistance and corrosion resistance. In addition, corundum wear-resistant castable has characteristics of high melting point, high fire resistance and high thermal shock resistance, and is an indispensable refractory material in offline boiler construction. The lightweight insulating bricks used for the structure of aluminum melting furnace include clay high-alumina and lightweight silica bricks, which depend on the material of the product.
What are the types and performance characteristics of refractory materials for aluminum melting furnace? Each material has its unique characteristics when used. So far, refractories have been developed. So, many kinds of refractories can be used in boilers. During construction, refractory materials completely used for boiler structure shall be provided.
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