What Are Ceramic Fibers

Date:2016-05-17 18:00 From:Zhengzhou Sunrise Refractory Author:sunrise

Ceramic fibers, also called aluminum silicate ceramic fiber, are a family of insulating refractory products that is fluffy, white cotton like fiber. They are made by melting the raw materials at high temperature in the furnace, before being blown or spun into ceramic fibers.

Ceramic fibers are mainly composed of Al2O3 and SiO2. ZrO2 and Cr2O3 are added in some cases to improve the operating temperature. They can be divided into blanket, board, bulk, module, paper, rope and Vacuum Formed Shapes.

Ceramic fibers have low thermal conductivity, very low heat storage, extremely light weight, good thermal shock resistance and stable chemical properties. The lightweight construction ensures that the required temperature is reached more rapidly, as only a little heat is used for the heating of the walls.

Its drawback is shrinkage at high temperatures. Shrinkage will not continue past this level in normal operating conditions, but this shrinkage must be carefully considered in designing a furnace lining.

Its mechanical strength is poor. These are not really structural materials. Proper support must be given to all refractory fiber products. Tend to sag at high temperature due to softening of fibers if improperly supported. They are not suitable in severe hostile environments.

They are used with great success in metal treating furnaces, ceramic kilns, and numerous other periodic operations whose atmosphere do not negate their revolutionary thermal and lightweight qualities.

Ceramic fibers tend to be more expensive than conventional refractories. However, installation labor savings and energy savings offset the high initial costs.

Zhengzhou Sunrise offers high quality ceramic fibers for glass furnaces, including blanket, board, bulk, module,paper, rope and Vacuum Formed Shapes.

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