Ceramic fiber is a kind of fibrous lightweight refractory with light weight, high temperature resistance, good thermal stability, low thermal conductivity, low heat and mechanical shock resistance and other advantages. Especially in recent years the industrial energy conservation and environmental protection control is stricter, ceramic fiber in China gets more wider application and has good development prospect.
Ceramic fiber first appeared in 1941, and after entering the 1990s, as containing zirconium fiber and the application of polycrystalline alumina fiber, its operating temperature is up to 1000℃~1400℃, but due to product quality defects and the backward of application technology, applications have been limited. For example, polycrystalline alumina fiber cannot be made into fiber blanket, which has single product specifications and gives priority to fiber blocks and loose cotton. Although the temperature increased, but the strength is poor, which limits the scope of application and shortens its service life.
Zirconium fiber is a kind of aluminum silicate fiber which is widely used and has low cost by melting method. It can be used as whole fibers liner of thermal furnace, but the current domestic products in the quality and application development of this aspect is still relatively backward. Now chrome fiber appears overseas, whose temperature is higher zirconium fiber, but there is no the domestic reports of this aspect.
In the field of high temperature industrial, ceramic fiber plays an important role in insulating refractory, but at the same time there is also a great production defect, especially it has imbedibility, which has certain harm to the environment and the human body. At present, a kind of biological solubility ceramic fiber appears in refractory insulation materials market, which is a kind of pollution-free environmental-friendly materials. Under present conditions and situation, no pollution, refinement and multiple functions will be the trend of ceramic fiber long-term development, especially the fine ceramic fiber using new techniques, new materials of high-tech and high value-added function.
