Aluminum silicate ceramic fiber blanket, also known as aluminum silicate fiber blanket, is a common external insulation material. The following is a detailed introduction:
I. Main raw materials and production process
The main raw materials of aluminum silicate ceramic fiber blanket include hard clay clinker, coke gemstone and alumina silica powder. These inorganic raw materials are strictly screened and proportioned to ensure the basic performance of the product.
Its production process mainly includes the following steps:
Melting: The raw materials are heated to a molten state at high temperature. This process usually adopts a resistance furnace method or an arc furnace method.
Spinning or spinning: The molten raw materials are converted into fibers by spinning or spinning. The spinning method uses a special nozzle to stretch the molten liquid to form continuous long fibers; the spinning method uses centrifugal force to throw the molten liquid into fibers on a high-speed rotating roller.
Solidification: The fiber is quickly solidified by cooling equipment to maintain its shape and stability.
Molding: The fiber is fed into the molding equipment, and after acupuncture, heat setting, longitudinal and transverse cutting, rolling and other processes, it is finally woven into an aluminum silicate ceramic fiber blanket with a certain strength and thickness. Among them, the acupuncture process uses a needle punching machine to tightly interweave the fiber layer, which significantly improves the tensile strength and wind erosion resistance of the fiber blanket.
Refractory treatment: In order to further improve the high temperature resistance and service life of the product, the fiber blanket needs to be refractory treated, such as coating or impregnation with refractory materials.
2. Main features
High temperature resistance: The operating temperature of aluminum silicate ceramic fiber blanket can be as high as 1100℃, and even some specific types of aluminum silicate ceramic fiber blankets, such as 1400 high aluminum type, can be increased to 1400℃. This feature enables aluminum silicate ceramic fiber blankets to maintain stable physical and chemical properties for a long time in high temperature and ultra-high temperature environments.
Good thermal insulation: The aluminum silicate ceramic fiber blanket has a low thermal conductivity, which can effectively reduce heat transfer, reduce energy consumption, and improve the thermal efficiency of industrial equipment.
Sound absorption and sound insulation: The internal fiber structure of aluminum silicate ceramic fiber blanket is evenly distributed, and it has good sound absorption and sound insulation effects.
Strong chemical stability: Aluminum silicate ceramic fiber blanket is not easy to react with common chemical substances, has strong resistance to corrosive media such as acids and alkalis, and can maintain stable performance in harsh chemical environments.
Lightweight and soft: The density of aluminum silicate ceramic fiber blanket is usually between 96~200kg/m³, and the texture is light and soft, which will not cause excessive burden on the equipment. At the same time, aluminum silicate ceramic fiber blanket has good flexibility and plasticity, and can be cut and spliced as needed, and the construction is simple and fast.
Regular size: The aluminum silicate ceramic fiber blanket is regular and flat, which is convenient for cutting and construction and installation. Common aluminum silicate ceramic fiber blankets have two widths of 610mm and 1220mm, and the thickness can be customized according to customer needs, such as 20mm, 30mm, 50mm, etc.
3. Application fields
Due to its many advantages, aluminum silicate ceramic fiber blanket is widely used in many fields:
Industrial field: It can be used for thermal insulation of industrial kilns, high-temperature equipment pipelines, high-temperature furnaces, hot air furnaces, drying furnaces, etc. to reduce heat loss and improve production efficiency.
Aerospace: It can be used for thermal insulation systems of spacecraft.
Petrochemical: It can be used for thermal insulation of reactors and storage tanks in the petroleum, chemical and other industries.
Other fields: It can also be used in electrical appliances, military industry, environmental protection and other fields, as well as high-temperature insulation gaskets, high-temperature pipe insulation pads, etc.
Aluminum silicate ceramic fiber blanket is an inorganic non-metallic material with excellent performance and wide application, which brings convenience and benefits to people's production and life.
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