Coating ceramic fiber furnace lining with high-temperature coating can not only expand the application scope of ceramic fiber furnace lining and improve its service life, but also increase the temperature of ceramic fiber furnace lining to 1800 ℃.

The application of ceramic fiber in industrial kilns below 1000 ℃ has achieved remarkable economic benefits and has become a mature application technology. It is a conventional energy-saving measure, taking the metallurgical system as an example; Ceramic fiber has been used in industrial kilns below 1000 ℃ in various production links such as fire resistance, coking, steelmaking, steel rolling and mechanical maintenance, and energy-saving all fiber furnaces are mostly used in new batch furnaces below 1000 ℃; The traditional layered fiber furnace has been replaced by modular fiber furnace linings with different structures.

The long-term use temperature of high aluminum (55%alo) fiber products in the flame furnace is generally lower than 1200 ℃, and the use temperature in the oil fired flame furnace is lower. The batch production and successful application of zirconium containing fiber products have solved the materials required for 1200~1300 ℃ high-temperature kilns; Using polycrystalline fiber products, the cost of mixed fiber products is low, and the structural strength of fiber furnace lining is high.