The influence of slag ball on ceramic fiber module
People in the industry refer to the vigilant particles that have not been fibrillated in the process of spinning ceramic fibers into fibers as slag balls. Generally speaking, those with a particle size greater than 0.212mm and a bulk density of 2800-3200Kg/m3 will be classified as slag balls.
Slag balls are an indispensable product in the production of high-temperature melting fiberization process. Even in the production of polycrystalline refractory fiber, that is, the colloid method, there is a certain amount of slag balls.
Generation of slug balls
Slag balls generally need to be removed by dry suspension separation or wet sedimentation separation after fiberization, but there is no good separation method for slag balls with small length and diameter.
Regulations on slag content
The national standard ceramic fiber has clear regulations on the content of slag balls.
The national standard stipulates that the slag ball content of ceramic fiber blankets with a temperature resistance level below 1000 ℃ is ≤ 25%, the slag ball content of ceramic fiber blankets with a temperature resistance level below 1450 ℃ is ≤ 20%, and the slag ball content of ceramic fiber products below 1700 ℃ is ≤ 5%. %, so when determining the bulk density of ceramic fiber products, the content of slag balls should be fully considered.
SUNTHERM's ceramic fiber products use advanced technology to control the content of slag balls at a temperature resistance level of 1450°C to less than 7%.
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Effect of slag ball on ceramic fiber module
01 It affects the overall strength of the ceramic fiber module, the higher the content of slag balls, the lower the fiber strength;
02 The content of slag balls is directly proportional to the density of ceramic fiber modules;
03 Although slag balls have neither the function of hindering heat transfer nor the characteristics of increasing heat transfer, an increase in the content of slag balls will lead to an increase in the density of ceramic fiber products, which will lead to an increase in thermal conductivity from the side. It is said that when the content of slag balls is high, the thermal insulation performance of ceramic fibers will also decrease accordingly.
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Suntherm's ceramic fiber products have corresponding test reports and meet national standards. Suntherm focuses on the production of high-quality ceramic fibers!