The refractory lining of traditional industrial furnaces has large dead weight, serious waste of heat storage in the furnace body, poor heat preservation effect, and the temperature of the cold surface of the furnace body exceeds 100 °C, making it difficult to control the furnace temperature. In recent years, the refractory lining of the furnace wall and top of the industrial furnace has been designed with a full fiber lining. Due to the low thermal conductivity, low density and light weight of the fiber, a lighter steel frame support structure is used in the design and construction of the kiln. , The fiber heat storage is small, and it is suitable for the operation mode of rapid heating and cooling. In addition, the ceramic fiber module can be processed into special-shaped products to adapt to various shapes of the inner wall of the furnace shell. The fiber module has good resistance to mechanical vibration and impact, and has good chemical stability.
The installation process of the ceramic fiber module is relatively simple and convenient, but each step must be constructed in strict accordance with the requirements. It is assumed that if the welding short anchor nails are not firm, it will cause major accidents such as the module falling off as a whole and the collapse of the furnace wall. For example, the folding direction during installation If it is not opened, it will cause the module to be loose and fall off due to the uneven pressure around the module. The ceramic fiber module lining structure uses short anchoring nails to fix the ceramic fiber module on the furnace shell, so that the anchoring nails do not directly contact the atmosphere in the furnace, which greatly reduces the heat dissipation of the furnace shell caused by heat conduction.
The refractory fiber component has good resilience after pre-compression, which effectively compensates for the thermal shrinkage of the refractory fiber, has good thermal insulation performance, good energy saving effect, convenient construction and maintenance, improves the construction quality and shortens the construction period. In the beginning, refractory ceramic fiber was only used as filling material and thermal insulation material, but now it can be used as a sealing material for the inner furnace cover of heat treatment furnaces and some other furnaces, and is used for water pipe wrapping, furnace roof and furnace wall lining in heating furnaces; It is used as the cover material and base sealing material of the bell annealing furnace in the heat treatment furnace, and also used in the furnace for high temperature operation.
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