The classification of ceramic fiber modules is based on the purity of alumina in the product. From this point of view, this selection inertia still makes sense. For example, the ordinary type is made of virgin materials, with more impurities, and the color is slightly dark yellow; the standard type is slightly dull in white; it looks white and bright at first glance, it must be a material of high purity or higher; it is worth noting that it is temperature resistant The type with high zirconium content tends to be milky white in color. Don't be surprised if you see the yellow-green fiber blanket, it is a composite fiber blanket with chromium added, which can withstand a high temperature of 1350 degrees.
To identify ceramic fiber modules, you still have to try it out. Generally speaking, high-quality ceramic fiber blankets have clear textures, regular acupuncture patterns, and low slag ball content. Tear the tough fiber blanket by hand to make the top grade.
At the same time, spinning blanket and blowing blanket can be distinguished by touch. The ceramic fiber blanket has a long and thick fiber, which is hard to break when touched. The fiber of the blown blanket is thin and short, and the touch is soft, relatively fluffy, and the pulling force is insufficient. Therefore, spinning cotton is generally used as a high-temperature insulation blanket or processed into modules, while blown cotton is mostly used to make ceramic fiber paper and ceramic fiber board.
Of course, the above methods are only applicable to the overall certainty of product quality. In order to obtain the exact index data of the ceramic fiber module, it is necessary to send samples to a professional refractory material testing center for testing.
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