Ceramic fiber boards are manufactured from high-quality ceramic fibers with low shot content. Through professional pulping and uniform mixing processes, fiber length and slurry concentration are precisely controlled. The resulting products feature smooth surfaces, accurate dimensions, good toughness, easy cutting, and excellent thermal insulation performance. Depending on the temperature grade, ceramic fiber boards are widely used as backup insulation in industrial furnaces and as hot-face linings in medium- and low-temperature kilns, making them one of the key materials for improving furnace energy efficiency and reducing heat loss.
Their main advantages as furnace lining materials are reflected in the following aspects:
Lightweight and Low Density
The bulk density of ceramic fiber boards is only about 25% of that of lightweight insulating bricks and approximately 10% of that of lightweight castables. Using ceramic fiber board linings significantly reduces the load on furnace steel structures and helps extend the service life of the overall system.
Low Heat Storage
The heat capacity of ceramic fiber boards is roughly one-tenth that of traditional lightweight refractory linings. With a low specific heat, they heat up quickly and cool down rapidly during furnace start-up and shutdown, contributing to energy savings and reduced operating and maintenance costs.
Excellent Thermal Insulation Performance
Ceramic fiber boards have much lower thermal conductivity than conventional lightweight insulating materials, providing superior insulation and effectively reducing heat dissipation losses from the furnace.
Good Thermal Shock and Vibration Resistance
Thanks to their excellent toughness and elasticity, ceramic fiber boards can withstand rapid temperature changes and mechanical vibrations during furnace operation. They are resistant to cracking or damage, ensuring high structural stability.
Strong Chemical Stability
Composed mainly of aluminosilicate, ceramic fiber boards are neutral to slightly acidic materials. Except in the presence of strong acids or strong alkalis, they do not react with water, oil, steam, or common chemical media, offering good corrosion resistance.
Wide Application Temperature Range
Ceramic fiber boards are available in multiple temperature grades ranging from 600 °C to 1400 °C, meeting the temperature resistance and insulation requirements of various industrial furnaces across different industries.
These advantages make ceramic fiber boards a reliable, efficient, and energy-saving solution for modern furnace lining systems.
