Ceramic fiber module is made of loose ceramic fiber natural settlement on the net belt of the cotton collector, so that it forms uniform cotton blank, through the needling process to get binder free needling blanket, folded and packed. The thermal stability of ceramic fiber module is closely related to the diameter, specific heat rate and density of ceramic fiber.
Ceramic fiber is a kind of fibrous lightweight refractory material, because of its light weight, high temperature resistance, good thermal stability, low thermal conductivity, small specific heat and mechanical vibration resistance and other advantages, widely used in machinery, metallurgy, chemical industry, petroleum, ceramics, glass electronics and other industries.
The important indexes in ceramic fiber are fiber diameter and thermal stability. Al2O3 and SiO2 fibers are commonly used in the ceramic industry. According to the content of Al2O3, they are divided into different ranges of use. Cr2O3 materials are also introduced to improve their fire resistance and oxidation resistance. General alumina content is high, iron oxide and other impurities low content of fiber products are pure white, the introduction of chromium oxide fiber is green.
The diameter of ceramic fiber is generally 2~5pm, the length is 30 ~ 250mm, the fiber surface is smooth cylindrical. Fine fiber, low density, low specific heat use temperature is high. If the fiber is coarse, slag ball more than the use effect is not ideal.
The thermal stability of ceramic fiber is more important. Al2O3, SiO2 fiber products in 1260℃ line shrinkage range has a certain range. The amount of shrinkage also directly affects the thermal stability.
Due to the low thermal conductivity, low density and light weight of fiber, light steel frame support structure is used in the design and construction of kiln, so that the development of ceramic kiln into the "kiln lightweight" era. Fiber heat storage is small, adapt to rapid heating, cooling and firing.
Ceramic fiber has the flexibility to be processed into products with grooves or openings, and has good resistance to mechanical vibration and impact, chemical stability is also good, these advantages for the development of new kiln, and the development of ceramic technology, the industry has an important role in promoting.
