Ceramic fiber insulating refractory materials are widely used in all kinds of furnaces of high temperature resistant insulation materials, due to its bulk density is much lower than other refractory material, and heat is small, heat insulation effect is obvious, as lining material can greatly reduce the thermal kiln energy loss, in the aspect of energy saving for furnaces has brought a revolution.On the other hand its application technology and method of thermal furnace masonry also brings about a revolution.

A, ceramic fiber insulation refractories using the status quo

Ceramic fiber first appeared in 1941, the bab, Mr Cox company with natural kaolin clay, with electric arc furnace melting injection into fibers.In the late 1940 s, the two companies producing series of aluminium silicate fibre, and applied in the aviation industry for the first time;In the 1960 s, the United States to develop a variety of ceramic fiber products, and used in industrial furnace wall lining.Started production in China in the 1970 s, ceramic fiber used, its application technology in the 1980 s to get rapid promotion, but the main range of applicable temperature under 1000 ℃, simple application technology is relatively backward.

After entering the 1990 s, as containing zirconium fiber and the application of polycrystalline alumina fiber, using the temperature to 1000 ℃ ~ 1400 ℃, but due to the backward product quality defects and application technology, application field and application methods are limited.Such as polycrystalline alumina fiber can not be made into fiber blanket, single product specifications, with loose cotton, fiber blocks is given priority to, although is increased with temperature, but the intensity is very poor, limiting the scope of use, and shortened the service life.

Second, the disadvantages of ceramic fiber insulation refractories and prospect analysis

Although ceramic fiber for high temperature adiabatic refractory plays an important role in the field of industry, but there are a lot of production defects, especially it has can be inhaled, and the human body has certain harm to the environment, some enterprises abroad tightened restrictions on the use of amorphous ceramic fiber.At present, a kind of biological solubility in amorphous ceramic fiber insulating refractory material market, the super fiber (siO2 - CaO - department of MgO style ceramic fiber) is a pollution-free environmentally friendly materials.Trend of ceramic fiber products in the future production, is in the direction of pollution-free, refinement and muti_function change development, especially in using new technology, new material, the preparation of the functional sex of the high-tech and high value-added fine ceramic fiber, its production rate will be more and more big, it will be to optimize the adiabatic refractory materials is of great significance.