polycrystalline fiberIt is a new type of ultra-light high-temperature refractory material in China. It has the characteristics of different bulk density mirrors, thermal resistance, branch trains, low thermal conductivity, high ambient temperature, and good energy efficiency.

       polycrystalline fiberWhat is the production process?

Polycrystalline fiber mullite fiber was prepared by chemical colloid method. The production principle is to make soluble aluminum and silicate into a colloidal solution with a certain viscosity, spray the colloidal solution onto the fiber embryo body by centrifugal differential method, and make aluminum silicon oxide polycrystalline fiber by high temperature heat treatment and other processes.

Polycrystalline fiber mullite fiber (PMF) is a new type of ultra-light high-temperature refractory fiber, which is a kind of Al2O3-SiO2 ceramic fiber. The acceptable aluminum and silicon salts are made into colloidal solutions with a certain viscosity, and the colloidal solutions are made into fibers by high-speed centrifugal tea house method, and then the crystal phase is transformed by high-temperature treatment. It is characterized by long Zhongjing, low heat, thermal conductivity, and high use temperature. It can be made of polycrystalline mullite fiber and then dispersed fiber cotton, or it can be made into various preforms or modules by wet vacuum forming.

What is the application technology of polycrystalline fiber?

Polycrystalline fiber refractory material is one of the important factors affecting the thermal efficiency and life of the kiln. At present, most of the domestic high-temperature industrial kilns use refractory brick batching, tamping and other tin distress furnaces, but the disadvantages are short service life, poor thermal efficiency, and energy consumption. Big and heavy weight. Therefore, the use of different refractory fiber can be used as a furnace lining is the inevitable trend of development of the kiln, polycrystalline cassiterite refractory fiber is a very ideal kiln energy-saving building materials.

       polycrystalline fiberMullite fiber can be applied by pasting, stone carving, splicing, hanging, tiling and other methods. According to the actual situation of the kiln, the use of a variety of different management methods. Polycrystalline mullite fiber raw cotton made of various products: felt, board, brick, barrel, special-shaped, etc.

The pasting method is to make polycrystalline fiber mullite fiber raw cotton into a 200*100*30~70mm fiber functional module through a special processing technology, and then paste it into the matrix of the kiln wall with the high temperature resistant structural adhesive matched with the system. The fiber layer is the hot surface of the kiln and can be used directly at a temperature of 1350 to 1500 ° C. During construction, the serious dust and debris on the furnace wall should be removed first. After cleaning, the furnace wall surface should be coated with a layer of high temperature resistant adhesive, and then a layer should be coated on the surface of the fiber module, and then directly adhered to the furnace wall. When pasting, the fiber and the furnace wall should be tightened to avoid the sticker being empty. After high temperature sintering, the adhesive becomes ceramic, and the fiber and furnace wall are solid as a whole.

In addition to the pasting method, a polycrystalline mullite fiber material product (plate, brick) can also be used for brick, hanging, patching, etc., and can be widely used in industrial push kiln, tunnel kiln, roller kiln, test furnace, vacuum furnace, shuttle kiln, etc.

Conclusion Usepolycrystalline fiberThe comprehensive effect of mullite fiber as the lining of high temperature kiln is obvious. It can extend the life of the furnace, reduce the number of kiln maintenance, reduce the weight of the kiln, reduce energy consumption, and the energy saving rate is more than 10% to 30%.