Polycrystalline Alumina Fiberboard

Polycrystalline alumina fiberboard is made from polycrystalline alumina fiber cotton as the basic raw material, combined with inorganic refractory aggregates, inorganic refractory powders and special additives, and processed through a special technique after being mixed in a specific proportion. Its primary crystalline phase is corundum, supplemented by a small amount of mullite. The synergistic effect of the two crystalline phases endows the polycrystalline alumina fiberboard with excellent refractory performance and high-temperature stability. Benefit from  its extraordinary processability, polycrystalline alumina fiberboard can be processed into various shapes and sizes of rigid irregular parts according to customer requirements.

Competitive Advantages of Smiecorex Polycrystalline Alumina Fiberboard:

1.Excellent thermal stability

2.Low permanent linear change during heating

3.Low shot content

4.Superior thermal reflectivity

5.Low heat capacity and low thermal conductivity

6.Strong corrosion resistance

7.Remarkable tensile strength

Typical Application Scenarios of Smiecorex Polycrystalline Alumina Fiberboard:

1.Metallurgical industry: As the high-temperature linings for various forging furnaces, heating furnaces, heat treatment furnaces, thin slab continuous casting and continuous rolling heating furnaces, silicon steel continuous annealing furnaces.

2.Ceramic manufacturing industry: As the lining material for rapid firing kilns.

3.Petrochemical industry: As the thermal insulation linings for cracking furnaces, combustion furnaces.

4.Semiconductor industry: Used as the back lining for sapphire growth furnaces and the furnace lining for sapphire annealing furnaces.

5.Other industries involving high-temperature applications: thermal insulation and sealing components for high-temperature parts.

The Technical Indicators：