The biggest drawback of CCEWOOL aluminum silicate fiber as a shuttle kiln insulation material is large linear contraction. In the long-term high temperature environment, CCEWOOL aluminum silicate fiber is easy to crystallization and powdering. Due to shrinkage leading shuttle kiln insulation performance degradation, or even damage the kiln wall. The crystallization and powdering, not only gradually destroyed the kiln walls, and powdering particles will pollute products. For the external insulation material of CCEWOOL aluminum silicate fiber, due to the low temperature of outer kiln wall surface, the phenomenon of crystallization and powdering is very minor, the harm caused is relatively small, and for internal insulation and full fiber insulation CCEWOOL silicic acid Aluminum fiber，the situation will be very serious, must take effective measures to overcome the harm caused by these defects.

     1. In the masonry and construction, in the seams to make sub-mouth; there must be compensatory measures of contraction joints.

     2. Make full use of different grades of CCEWOOL aluminum silicate fiber products, leave some room for the operation temperature, or layer of a higher operation temperature fiber products on the high temperature surface, such as zirconium fiber or polycrystalline Mullite fiber.

     3. In the fiber heated surface, spraying a layer of high-temperature coating with low thermal conductivity, strong adhesion, and high emissivity characteristics. This not only can protect the CCEWOOL aluminum silicate fiber, to increase the air tightness of the kiln, but also increase the high temperature radiation Rate of kiln wall so that increase the heat absorption and emission to achieve energy conservation.

     CCEWOOL aluminum silicate fiber as a thermal insulation material in the shuttle kiln application is feasible, with remarkable results. Compared with the traditional refractory bricks as insulation material, CCEWOOL aluminum silicate fiber not only can reduce the thickness of the kiln wall more than 50%, weight reduction to the original 1/5 to 1/10, simple masonry, saving raw materials and reduce the area, And can significantly save energy, speed up the furnace heating rate and cooling rate, improve the quality of the product. Therefore, its application will produce very good economic and social benefits.

     We hope the above information about CCEWOOL aluminum silicate fiber’s defects and solutions used in the shuttle kiln can bring some help to all kiln constructors.