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Refractory fiber and its products

September 04, 2018

Refractory fiber and its products

Refractory fiber, also known as ceramic products, is an artificial inorganic non-metallic fiber material. A narrowly defined refractory fiber generally refers to a fibrous material with a temperature above 1000 °C. The refractory fiber mainly includes four types of amorphous fiber, polycrystalline fiber, single crystal fiber and composite fiber. The materials and varieties are numerous, and the refractory fibers commonly used in industrial furnaces mainly include aluminum silicate fibers, high alumina fibers, alumina fibers, and mixed fibers . Refractory fibers can be processed into various ropes, belts, felts, blankets, blocks, etc. as needed, and can be used as working linings for industrial furnaces, but can not be used in areas where the flow velocity is too high, which are directly in contact with the slag liquid or are subject to mechanical impact.. Its energy saving effect is remarkable.


1, Good resistance to high temperature. its use temperature varies according to fiber material and mineral composition and structure, generally speaking, it is 1000--1400 ° C

2, Good thermal insulation, low thermal conductivity at high temperatures. For example, the thermal conductivity of aluminum silicate fiber is about 35% lower than that of high-alumina heat-insulating refractory brick of 0.4g/cm3.

3, Small bulk density, generally 0.1--0.2g/cm3, only 1/5--1/10 of the insulating fireclay brick, 1/10--1/20 of the ordinary refractory brick.

4, Good thermal shock resistance, small heat capacity, stable chemical properties.

5, Soft texture, good process stability. The lining constructed with refractory fibers is thin and light, with fast heating, uniform temperature, and low fuel and material consumption.

6. Furnace construction with refractory fiber products, low labor intensity, convenient construction and improved efficiency.