Manufacturing Process And Application Prospect Of Ceramic Fiber

There are three methods of making ceramic fibers: drawing, blowing and spinning. The common method of ceramic fiber in ceramic fiber paper is blowing. The blowing method is to spray the molten mixed raw materials into the peripheral surface of the high-speed rotating disk in a trickle state under the pressure of inert gas. Under the pulling force of high-speed rotation of the disc, it is spun into filaments and wound on the disc to obtain several microns of ceramic fiber.
The ceramic fiber used for manufacturing ceramic fiber paper must be purified to remove unqualified non-fibrous ceramic particles. Then use the beater to properly adjust the fiber length, and make sure that the length-width ratio of the fiber is equal to more than 10. The ceramic fiber should be kept in suspension and dispersion during the flow process. It can be copied on conventional paper machines such as long wire, round wire and oblique wire.
According to the purpose of the product, adhesive can be added to the slurry before manufacturing ceramic fiber paper or not. However, in order to meet the strength required by industrial production, high temperature adhesive has been added to the ceramic fiber paper currently produced.
Ceramic fiber is widely used in thermal insulation and high temperature resistant materials of various thermal kilns. Because its capacity is significantly lower than other refractory materials, it has little heat storage and obvious heat insulation effect. As a lining material, it can greatly reduce the energy consumption of thermal kilns.
At present, "resistance jet fiber forming, dry needle punching blanket" and "resistance spinning fiber forming, dry needle punching blanket" are still two typical technologies for ceramic fiber production in the world. As the application scope of ceramic fiber is increasingly expanded, and with the development of high-tech, ceramic fiber products are required to develop in the direction of functionality to meet the special functional products required in specific fields, such as high temperature resistance, mechanical properties, flexibility and spinnability. In terms of manufacturing methods, melting and chemical methods coexist and develop simultaneously to meet the needs of different types of applications. The melting method is often used to produce amorphous fiber, which has low technical content, low production cost, and wide range of applications. It is mainly used as the basic material in industrial furnaces, heating devices, fire resistance, and heat insulation applications. The chemical method is used to produce polycrystalline fiber. This method has high technology content, high production cost and high added value, but the products are still few. It is mainly used in the fire-resistant and thermal insulation of industrial furnaces with high temperature above 1300 ℃ and in the cutting-edge technology fields such as aerospace, aviation and nuclear energy.