October 20, 2025
Ceramic fiber blanket is one of the most versatile and widely used insulation materials in the refractory and thermal industry. Known for its exceptional thermal stability, low heat storage, and excellent resistance to thermal shock, it provides high-performance insulation in industrial furnaces, kilns, and other heat-processing equipment.
Unlike traditional refractory bricks, the ceramic fiber blanket is lightweight, flexible, and easy to install, making it an ideal choice for both new construction and maintenance of existing thermal systems.
A ceramic fiber blanket is manufactured from high-purity alumina and silica fibers, produced through a spun or blown process that forms a uniform, interlocking fiber matrix. This unique fiber structure provides:
High tensile strength for mechanical durability
Excellent thermal insulation with low thermal conductivity
Stable chemical composition even in oxidizing and reducing atmospheres
Depending on application needs, ceramic fiber blankets are available in various grades, such as standard, high-purity, zirconia, and high-alumina types, allowing precise performance matching to temperature and process requirements.
The ceramic fiber blanket maintains its structural integrity even at extreme temperatures. Its continuous use temperature ranges from 1000°C to 1430°C, depending on grade. Key performance characteristics include:
Low thermal conductivity: Minimizes heat loss and improves energy efficiency
High tensile strength: Resists mechanical vibration and gas flow erosion
Excellent thermal shock resistance: Handles rapid heating and cooling cycles
Chemical stability: Resistant to most acids, alkalis, and corrosive gases
Lightweight and flexible: Simplifies installation and maintenance
These properties make the ceramic fiber blanket a highly effective solution for industries seeking to balance energy savings, system performance, and ease of handling.
The adaptability of ceramic fiber blanket enables its use in a wide range of high-temperature environments:
Industrial Furnaces and Kilns
Used as lining insulation in heat treatment furnaces, annealing ovens, ceramic kilns, and melting furnaces.
Ensures consistent heat distribution and energy retention.
Petrochemical and Power Plants
Ideal for boiler insulation, heater linings, and pipe wrapping, reducing energy consumption and surface temperature.
Metallurgical Operations
Serves as backup insulation behind refractory bricks in steel ladles, tundishes, and reheating furnaces.
Fire Protection Systems
Provides passive fire protection in expansion joints, fire doors, and structural insulation panels.
Automotive and Aerospace Industries
Used in exhaust systems, thermal shields, and engine compartments, where lightweight heat insulation is critical.
Superior insulation performance with minimal heat storage
High flexibility — easy to cut, wrap, or mold to complex shapes
Energy-efficient — reduces fuel costs and heat loss
Durable under vibration and mechanical stress
Chemical and thermal stability for long service life
Simple installation — no curing or drying required
| Property | Typical Value |
|---|---|
| Density | 64–160 kg/m³ |
| Maximum Service Temperature | 1000°C–1430°C |
| Thermal Conductivity (at 1000°C) | 0.16–0.20 W/m·K |
| Chemical Composition | Al₂O₃ + SiO₂ (with optional ZrO₂) |
| Tensile Strength | >0.04 MPa |
Ceramic fiber blanket stands out as a modern, efficient, and lightweight insulation solution in today’s high-temperature industries. Its combination of
thermal performance, mechanical strength, and ease of application makes it a preferred choice for furnace linings, industrial insulation, and energy conservation systems.
By integrating ceramic fiber blanket into thermal designs, industries can achieve greater energy efficiency, reduced maintenance costs, and longer equipment lifespan, ensuring stable operation under the most demanding thermal conditions.
