Applications of Aluminum Silicate Fiber
Release time:
2021-11-12
In recent years, various aluminum silicate fibers have been increasingly used in the steel industry abroad, and their application range is also expanding slightly.
In recent years, various aluminum silicate fibers have been increasingly used in the steel industry abroad, and their application range is also expanding slightly. The application of aluminum silicate fiber lining in various industrial furnaces can save energy by 20%-40%, and can also reduce the dead weight of the industrial furnace by 90% and the weight of the steel structure by 70%.
While promoting the use of aluminum silicate fiber furnace lining, the application technology of aluminum silicate fiber has also been greatly developed. It is predicted that if the aluminum silicate fiber products and its application technology continue to be improved, and try to make the aluminum silicate fiber lining try to maintain the performance of aluminum silicate fiber before use, the energy consumption of the high industrial furnace using the aluminum silicate fiber lining can be reduced by about 4%. In addition, due to the application of polycrystalline alumina fiber and polycrystalline mullite fiber, the maximum use of aluminum silicate fiber lining has reached 1500-1600 °C, if the aluminum silicate fiber lining is coated with high coating. It can not only expand the application range of aluminum silicate fiber lining and improve its service life, but also increase the maximum use degree of aluminum silicate fiber lining to 1800 °C.
1. In high-tech furnaces, the surface of the aluminum silicate fiber lining of different materials and structures will produce different degrees of crystallization and sintering under the dual action of fuel combustion products and high. Of these materials, the use of aluminum-containing aluminosilicate fiber linings has the least variation and the longest service life. In terms of lining structure, aluminum silicate fiber blanket or module furnace lining, company website, and composite structure furnace lining composed of aluminum silicate fiber blanket and module are the best. The method of coating high coating on the surface of aluminum silicate fiber furnace lining, or setting a dense layer between aluminum silicate fiber lining and each layer of fiber, can prevent high air flow from entering the interior of aluminum silicate fiber furnace lining, therefore, the thermal insulation effect of furnace lining can be improved, and the service life of furnace lining can be prolonged; Attaching a hard aluminium silicate fiber plate or module to the high side of the aluminium silicate fiber lining can also do the same thing.
2. Aluminum silicate fiber, the carrier material for filtration and catalyst, has the characteristics of high strength, good thermal shock resistance and chemical corrosion resistance, and is an ideal high filter material. In recent years, various filters have been successfully developed using aluminum silicate fibers, such as candle filters, fabric filters and composite filters, which are widely used in smoke and dust removal in thermal power plants, metal smelters, chemical plants, and can also be used to eliminate harmful substances in diesel engine exhaust gases.
3. Aluminum silicate fiber products with packing materials and friction materials have compression resilience and can be used as high packing materials. Aluminum silicate fiber, nitrile rubber, inorganic binders, mica and non-expanded vermiculite can be used to make a high density material without asbestos. Aluminum silicate fiber, high-alumina cement, synthetic rubber and water-absorbing polymer can also be used to make a water-resistant sealing material with good bonding properties in water. Aluminum silicate fiber, like glass fiber and rock wool, can be used to make asbestos-free friction materials. This type of friction material is characterized by a stable coefficient of friction, good wear resistance, and low noise.
4. Thermal insulation coating aluminum silicate fiber is used as a grid material for high thermal insulation coating, which can improve the strength of the coating, reduce the shrinkage, reduce the bulk density, and increase the thermal insulation effect. Spraying coatings composed of aluminum silicate fibers and heat-resistant binders can be sprayed with special spraying equipment. Coatings can be sprayed directly on the walls of industrial furnaces to form furnace linings, or they can be sprayed on construction steel to form refractory coatings. Compared with other furnace linings, spraying furnace lining has the characteristics of smooth surface, good air tightness, good thermal insulation effect, not easy to peel off, can be used for complex shape furnace wall and fast construction speed, etc., which is a more ideal furnace lining structure.
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Key words: Smoke control and fire protection ceramic fiber series aluminum silicate fiber series