Manufacturing process of ceramic fiber

There are three methods for making ceramic fibers: the spinning method, the blowing method and the spinning method. The ceramic fiber in the ceramic fiber paper is commonly used in the blowing method. The wire blowing method is to spray the molten mixed raw materials to the peripheral surface of the high-speed disc in a trickle state under the pressure of a rare gas. Under the pulling force of the high-speed rotation of the disc, it is spun into filaments and coiled on the disc to obtain ceramic fibers of several microns.

The ceramic fiber used for making ceramic fiber paper needs to be purified to remove the unqualified non-fiber ceramic particles. Then use the beater to adjust the fiber length properly, be sure to make the fiber width to height ratio equal to more than 10. In the flow process to keep the ceramic fiber is suspended, dispersed state. It can be copied on regular paper machines such as long net, round net and inclined net.

Depending on the usefulness of the product, the binder can be added to the slurry before copying the ceramic fiber paper, or not. However, in order to meet the strength required by industrial production, high-temperature binders have been added to the ceramic fiber paper currently manufactured.

Ceramic fiber is widely used in all kinds of thermal furnace heat insulation and heat-resistant materials, because its bulk density is much lower than other refractory materials, so the heat storage is very small, the heat insulation effect is better, as the furnace lining material can greatly reduce the energy consumption of thermal kiln, in terms of energy saving for thermal kiln has brought a revolution. On the other hand, its application of technology and methods to the wall of thermal kiln also brought a revolution.

At present, "resistance method blowing into fiber, dry needling blanket" and "resistance method spinning into fiber, dry needling blanket" are still two typical production processes for ceramic fiber manufacturing at home and abroad. Because the application range of ceramic fibers is expanding, and with the development of high technology, ceramic fiber products are required to develop to the functional aspects to meet the functional products required in specific fields, such as making the products have good heat resistance, mechanical properties, flexibility and spinnability. In terms of manufacturing methods, melting methods and chemical methods coexist and develop simultaneously to meet the needs of different types of applications. The melting method is often used in the production of amorphous fibers, which has low technical content, low production cost, and a wide range of applications. It is mainly used as a basic material in the field of industrial kilns, heating devices, refractory and heat insulation applications. The chemical method is used to produce polycrystalline crystalline fibers. The method has high technical content, high production cost, and high added value, but there are still few commodities. It is mainly used for refractory insulation of high-temperature industrial kilns above 1300°C and aerospace, aviation, Nuclear energy and other technical fields.

All kinds of ceramic fiber modules are made of fiber needled blankets made of corresponding materials with excellent performance according to the structure and size of fiber blocks, and are made by professional technicians and professional equipment for block processing. In order to ensure that the blocks are squeezed from each other after the wall lining is built, a tight insulation body without gaps is produced. In the production process, a fixed compression amount is maintained, and the commodity supporting anchoring system can be firmly connected with the kiln shell, with accurate size and simple installation. Speed up the furnace lining construction rate, reduce the weight of the kiln, greatly improve the furnace refractory insulation performance.