In high-temperature industrial fields, the performance of thermal insulation materials directly affects equipment stability, energy consumption, and final product quality. Facing increasingly demanding ultra-high-temperature working conditions, traditional refractory materials often struggle to balance insulation efficiency and durability. Recently, our company launched the Polycrystalline Mullite Fiber Blanket, which has become a highly recognized insulation solution for 1600°C ultra-high-temperature environments due to its outstanding heat resistance and low thermal conductivity.

1. Breakthrough Temperature Resistance with Stable Long-Term Service
The Polycrystalline Mullite Fiber Blanket is manufactured using advanced sol-gel technology, with high-purity mullite microcrystals as the primary crystalline phase. Its continuous operating temperature can reach up to 1600°C, with even higher short-term temperature resistance. Even under such extreme conditions, the fiber structure remains intact without easy pulverization or crystallization.
Compared with conventional ceramic fiber blankets, it offers significantly improved dimensional stability and creep resistance in ultra-high-temperature environments, making it especially suitable for hot-face linings or backup insulation in high-temperature furnaces and kilns.
2. Low Thermal Conductivity for Significant Energy Savings
Benefiting from the large number of static air layers formed by the interwoven fiber structure, the Polycrystalline Mullite Fiber Blanket features extremely low thermal conductivity at high temperatures (for example, approximately 0.18 W/(m·K) at 1000°C). This effectively reduces heat loss, lowers the external surface temperature of furnace walls, and helps customers achieve energy savings of 10%–30%.
At the same time, the blanket structure is flexible and easy to cut, enabling convenient installation and significantly shortening furnace construction or maintenance periods.
3. Widely Compatible with Various High-Temperature Equipment
Whether used in reheating furnaces in the steel industry, cracking furnaces in the petrochemical industry, or ultra-high-temperature electric kilns in the ceramics and electronics industries, the Polycrystalline Mullite Fiber Blanket provides reliable thermal insulation performance.
It can be used independently or combined with other refractory materials in composite lining structures, flexibly meeting the temperature gradient design requirements of different equipment.
Continuous Innovation Empowering the Low-Carbon Transformation of High-Temperature Industries
As a professional supplier of high-performance refractory materials, our company remains committed to providing safe, energy-efficient, and durable insulation products for ultra-high-temperature applications. The promotion and application of the Polycrystalline Mullite Fiber Blanket will help enterprises reduce energy consumption, extend furnace service life, and move toward a more efficient and low-carbon manufacturing future.
For technical specifications or sample testing support, please feel free to contact our technical team.






