Refractory Materials Required for Aluminum Alloy Production and Their Prices

A variety of refractory materials are required during the production of aluminum alloys to cope with high temperatures, chemical corrosion, and other environmental requirements. The following are some common refractory materials that play an important role in aluminum alloy production:

Refractory Bricks: Refractory bricks are commonly used inside furnaces and electrolyzers for aluminum smelting because of their ability to withstand high temperatures and corrosion. Refractory bricks made of high alumina, silicate, or magnesia-aluminum mineral materials are suitable for different locations.

Refractory castable: Refractory castable is a high-temperature resistant material, usually mixed with high alumina cement, silica sand, and refractory aggregate. They supplement, repair, and rebuild furnace floors and walls to protect high-temperature environments.

Refractory fiber: Refractory fiber is usually made of ceramic, glass, or other special materials and is used for insulation and heat preservation to reduce energy consumption and improve production efficiency. They can be used on the hot edges of furnaces and insulating covers.

Aluminum silicate fiber: Aluminum silicate fiber is a refractory material suitable for insulation and thermal isolation in high-temperature areas, such as the top insulation of electrolytic cells.

Refractory ceramics: Refractory ceramic materials are often used in the linings and internal parts of aluminum alloy production equipment because they have good high-temperature and corrosion resistance.

Corrosion-rResistant materials: Aluminum alloy production involves some chemically corrosive environments, so special corrosion-resistant materials may also be used for the internal lining of equipment or equipment that handles chemical reactions.

Commonly used refractory materials in aluminum alloy production include ordinary clay bricks (Al₂O₃ content in the range of 30% to 48%; the main mineral composition is cristobalite + mullite) and high alumina bricks (Al₂O₃ content > 48%; among them, 75 high alumina bricks: 75%, the main mineral composition is corundum + mullite; the second-level high alumina brick 60% to 75%, the third-level high alumina brick 48% to 60%, the main mineral composition is mullite (cristobalite). High alumina bricks are mainly used to build the inner wall of the molten pool that is in contact with the aluminum melt and as the furnace beam masonry supporting the electric heating body material. This kind of brick has the characteristics of high refractoriness, high mechanical strength, and good slag resistance, but its resistance to rapid cooling and heat is not as good as that of ordinary clay bricks, and the price of high alumina bricks is slightly more expensive. Ordinary clay bricks are mainly used for parts that are not in direct contact with the metal melt and for furnace lining. This kind of brick has the advantages of good resistance to rapid cooling and rapid heating, poor thermal conductivity, good volume stability, and low price. However, due to the high content of SiO2 and poor slag resistance, it is easily reduced when in contact with molten aluminum and contaminates the melt. It is also easy to penetrate and agglomerated by the aluminum melt, making maintenance difficult, so it is generally not used as a smelting furnace or a standing furnace. The surface material of the molten pool.

The price of refractory materials is related to physical and chemical indicators and its price ranges from around 1,000 to over 10,000 yuan per ton. Please contact Xinhongji Refractory for detailed quotations.

When selecting refractory materials, factors such as the specific production process, temperature requirements, corrosion properties, and budget need to be considered. Selecting the appropriate materials and following relevant installation and maintenance standards can help ensure the safety, performance, and longevity of aluminum alloy production equipment.