Insulating fire brick thermal conductivity

The thermal conductivity of insulating fire bricks (IFB) can vary depending on factors such as composition, density, and temperature. In general, the thermal conductivity of IFBs is lower than that of dense refractory bricks, which makes them ideal for use in applications where thermal insulation is required.

Typically, the thermal conductivity of IFBs ranges from 0.14-0.5 W/mK, with some types having values as low as 0.1 W/mK at room temperature. As the temperature increases, the thermal conductivity of IFBs tends to increase as well.

It's worth noting that the thermal conductivity of IFBs may be affected by factors such as moisture content, porosity, and manufacturing methods. For example, IFBs with a higher density tend to have higher thermal conductivity values than those with lower densities.

Overall, the low thermal conductivity of insulating fire bricks makes them an excellent choice for applications that require good thermal insulation properties, such as kilns, furnaces, and other high-temperature equipment.