The varieties of ceramic fiber mainly include ordinary aluminum silicate fiber, high aluminum silicate fiber, aluminum silicate fiber containing zirconium, polycrystalline alumina fiber and polycrystalline mullite fiber. In recent years, foreign countries have successfully developed (or are developing) some new ceramic fiber varieties, such as magnesium olivine fiber, ceramic fiber (SiO Cao MgO system and Al, o-cao, etc.), ceramic fiber cotton, felt, blanket, module, paper, cloth, belt, rope, etc

Ceramic fiber paper is made of ceramic fibers, binders and additives through pulping, molding, curing and drying. It is an ideal material for sealing and heat insulation. It can be used for thermal insulation of various thermal kiln expansion joints, high-temperature gaskets and other parts. In addition, ceramic fibers can also be used for filtering and catalyst carrier materials, filling sealing materials and friction materials, thermal insulation coatings, reinforcement materials, etc.

Forsterite fiber is a kind of ceramic fiber made by calcining asbestos at high temperature. Its chemical composition is mgosi, its unit weight is 48~640kg/m, its thermal conductivity is 0.44~0.7w/m~c, and its melting point is 1600 ~1700 ℃. Forsterite fiber can be used as asbestos substitute material for a long time under high temperature. The content of alo and other impurities in SiO Cao MgO ceramic fiber is very low. It is made by melting calcium silicate and wollastonite into fiber, The shrinkage of the vacuum molded product of this ceramic fiber is less than 3.5% after 24h at 1260 ℃. It is safe to use. Another kind of ceramic fiber that is harmless to health is the alo Cao fiber without SiO in its chemical composition. Its alo and CaO content is more than 90%. It is a ceramic fiber made from chemical raw materials alo powder and CaCO powder after high temperature melting. This ceramic fiber has felt, blanket and vacuum molded products.