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polycrystalline alumina fiber felt

Aluminum silicate refractory fiber felt

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detail intruduction   
   Product introduction:      
   Aluminum silicate refractory fiberboard felt is made by washing the refractory fiber with water to remove the ball, and then mixing it with an inorganic binder and an organic binder, and then vacuum filtration or press molding.
   Features:   
   small thermal conductivity, low heat capacity;      
   Thermal shock resistance, corrosion resistance, good thermal stability;      
   Large bulk density range;     
   Easy to install and use;
  Applications:   
  It is suitable for the thermal insulation of various industrial kiln wall linings; fiber lining of tunnel kilns and shuttle kilns; expansion joints of various industrial equipment masonry; special-shaped punching gaskets for household appliances.
  (1) Low heat capacity and low thermal conductivity (2) Excellent thermal stability (3) Excellent tensile strength (4) Excellent chemical stability (5) Excellent thermal stability and thermal shock resistance (6) Excellent Sound absorption. According to the working temperature, the products can be divided into: ordinary aluminum fiber felt (board), standard fiber felt (board), high-purity fiber felt (board), high aluminum fiber felt (board), and zirconium-containing fiberboard.
   The difference between aluminum silicate refractory fiber felt and fiber blanket:   
   It may be due to the different regions and names. Customers often call ceramic fiber blankets aluminum silicate refractory fiber insulation felt. In fact, ceramic fiber blankets and aluminum silicate refractory fiber insulation felt are completely different products. The raw materials and uses are similar, but there are still many differences between the two in many aspects.

(1) Bulk weight: The bulk density of the aluminum silicate refractory fiber insulation felt board is between 220-280, and the bulk density of the ceramic fiber blanket is 90-128, so the felt is a relatively hard material, and the ceramic fiber blanket is relatively fluffy, like a quilt The cotton inside is needle punched with loose cotton.   
    (2) Purpose:   The ceramic fiber blanket is relatively soft and can be wound and overlapped. It is widely used in practical applications. However, the aluminum silicate refractory fiber insulation felt board is relatively hard and can only be used flat, not folded or bent. For example, in pipeline insulation, only ceramic fiber blankets can be used for wrapping, and aluminum silicate refractory fiber insulation blankets cannot be used.                (3)Thermal insulation effect comparison: Because the ceramic fiber blanket is relatively fluffy and there are many gaps in the middle, it can well hinder the hot air flow. No matter the kind of bulk density, just choose the appropriate thickness of the blanket. At 220 bulk density, the quality is very poor and the surface is rough. After use, there will be gaps between the furnace walls. The insulation effect is not as good as the ceramic fiber blanket. If a material with a certain hardness is required, ceramic fiber board can be used instead of aluminum silicate refractory fiber insulation felt board .   
   (4) Price comparison, the price of ceramic fiber blanket is lower than that of aluminum silicate refractory fiber insulation felt board, and the transportation and construction are relatively simple, so the performance ratio of ceramic fiber blanket is better.
 Product performance:

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Note: The data in the table are average values and should not be regarded as guaranteed values.


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