In high-temperature industries, equipment must operate steadily and efficiently while minimizing energy loss. Ceramic fiber meets these challenges with superior performance.
We understand the daily challenges of high-temperature settings and the need for effective ceramic fiber insulation. Today, CVSIC analyzes the core performance and main industrial uses of ceramic fiber.
The insulation magic of ceramic fiber: the secret of low thermal conductivity
Picture an industrial furnace over 1000°C, with heat trying to escape. Ceramic fiber captures the heat due to its low thermal conductivity.
1. Extremely Low Thermal Conductivity
Ceramic fiber contains a dense network of micro-pores, where gases have extremely weak thermal conductivity, making it difficult for heat to quickly penetrate the material.
- At common operating temperatures (800–1200°C), thermal conductivity typically ranges from 0.1 to 0.25 W/m·K;
- Compared to traditional refractory bricks, its thermal insulation efficiency can be improved by 3–5 times.
At the same thickness, ceramic fiber keeps heat where it belongs. You can also use a thinner layer for the same insulation, saving space and costs.
2. Lightweight structure, low thermal capacity
The bulk density of ceramic fiber typically ranges from 96 to 192 kg/m³, which is significantly lower than that of refractory bricks and calcium silicate materials. This low thermal capacity enables it to:
- Heat up faster and reduce preheating time during equipment startup and shutdown;
- Reduce energy consumption;
- Respond more sensitively to thermal cycling environments, making it suitable for applications with frequent startup and shutdown cycles.
3. High reflectivity
- The fiber surface can reflect part of the radiant heat, further enhancing the insulation effect.
High-temperature resistance
Ceramic fiber withstands high temperatures. CVSIC’s products operate in environments ranging from 1000°C to 1600°C, with some models capable of reaching 1800°C for brief periods. This makes it suitable for high-temperature furnaces and heat treatment equipment.
This high-temperature resistance stems from:
- High-purity raw materials: CVSIC uses high-purity alumina and silica, with a melting point exceeding 2000°C, ensuring the fibers do not melt or deform at high temperatures.
- Thermal shock resistance: The low thermal expansion coefficient and flexible structure of ceramic fibers ensure stability even under rapid temperature changes, reducing the risk of cracking or peeling.
- Process optimization: Through spinning or blowing processes, CVSIC ensures uniform fiber structure and stability, maintaining performance even during prolonged high-temperature operation.
Take the homogenizing furnace in the steel industry, for example. CVSIC’s ceramic fiber modules are widely used in furnace linings. Customer feedback indicates that, compared to traditional refractory bricks, fiber modules not only reduce the weight of the furnace wall by 70% but also significantly extend the service life of the furnace lining and decrease the frequency of shutdown maintenance.
Chemical stability: A “jack-of-all-trades” for complex environments
Ceramic fiber is well-suited for environments with corrosive gases or complex chemicals. Its chemical stability ensures it performs in harsh conditions. It resists most acid and alkaline gases, making it suitable for use in the chemical and metallurgical industries.
- Compatibility with neutral atmospheres: CVSIC’s ceramic fiber remains stable in both reducing and oxidizing atmospheres, ensuring long-term use without degradation.
- Low impurity content: CVSIC strictly controls impurities during the production process to ensure that the fibers do not undergo unexpected reactions in high-temperature chemical environments.
Typical application scenarios: where ceramic fiber shines
The thermal insulation and high-temperature resistance of ceramic fiber make it a valuable material in many industries. The following are several typical application scenarios where CVSIC’s products excel:
Kiln linings:
Ceramic fiber blankets and module systems are widely used for high-temperature kiln hot-face linings, offering the following advantages:
- Significantly reduce heat loss from the kiln body;
- Shorten kiln temperature response time;
- Lighter furnace weight, suitable for large-scale equipment or mobile furnaces.
Pipe Insulation:
In the petrochemical industry, ceramic fiber blankets and ropes are used to wrap high-temperature pipes, effectively reducing surface temperatures, protecting operator safety, and minimizing heat loss.
Furnace Door/Hot Air Outlet Sealing:
Ceramic fiber paper, cloth, ropes, or module scrap materials are used for filling, effectively controlling heat loss, and extending the lifespan of the furnace.
Heat treatment equipment: Ceramic fiber boards are commonly used in the aerospace and automotive industries as insulation layers for heat treatment furnaces, ensuring temperature stability for precision processes.
Sealing and joint filling: Ceramic fiber cloth and rope provide reliable sealing at furnace doors, expansion joints, and other areas, preventing heat leakage and extending equipment lifespan.
We supplied ceramic fiber modules to a power company for boiler flue insulation upgrades. This improvement in thermal efficiency resulted in an 8% increase and saved approximately 2 million yuan in fuel costs annually. Contact us to see how ceramic fiber can benefit your industry.
Why choose CVSIC’s ceramic fiber?
The right high-temperature material shapes your future. CVSIC’s ceramic fiber delivers insulation, temperature resistance, and full customer support.
The outstanding performance of ceramic fiber is not inherently “universal”; its true advantages can only be realized through proper selection and professional installation. CVSIC consistently focuses on “high performance + customized services” to provide customers with more reliable high-temperature insulation solutions.
- Customized solutions: Our engineering team thoroughly understands your operational conditions and tailors the optimal solution for you.
- High-quality assurance: Every batch of products undergoes rigorous testing to ensure stable performance and durability.
- Environmental Protection and Safety: Some products use low-biopersistent fibers, compliant with international environmental standards, ensuring safer installation.
Conclusion: Make high temperatures more controllable and efficiency more outstanding
The insulation and high-temperature resistance of ceramic fiber are like a “super armor” tailored for high-temperature industries. It not only protects your equipment but also significantly improves efficiency and reduces costs. CVSIC is committed to helping you tackle high-temperature challenges with professional products and attentive service. Whether you want to optimize kiln insulation or find a more reliable solution, we are here to support you at any time.
Contact CVSIC for a free technical consultation or to request a product sample, and start making your project more efficient and energy-saving.
