Thermal conductivity of refractory materials is one of the important indicators of refractory materials, and it is also an important factor that many customers consider when purchasing refractory materials for high-temperature kilns.
Thermal conductivity of refractory materials has different meanings in different types of refractory materials with different functions. For example, when users purchase lightweight refractory bricks and lightweight castables, they should have lower requirements for thermal conductivity. Kiln The thermal insulation performance of the furnace body is better. When using lightweight refractory bricks and lightweight castables with low thermal conductivity, the thickness of the lining of the industrial furnace can be reduced accordingly, saving the use of refractory materials and reducing the use of refractory materials. It also reduces the heat loss of industrial kilns during operation, saving energy and reducing consumption.
The thermal conductivity of refractory materials is used as heat exchangers, flame shields, etc. in the flame isolation structures of some industrial heating furnaces. The thermal conductivity is required to be higher, which can correspondingly increase the temperature inside the furnace and improve heat conduction. Efficiency helps improve the working environment of the kiln and speed up the production rhythm.
The thermal conductivity of refractory materials, whether lightweight refractory bricks or lightweight castables, is affected by factors such as the number, shape, and uniform distribution of internal pores, which directly affects the thermal shock resistance of lightweight refractory bricks and lightweight castables. , corrosion resistance, etc. Generally speaking, the greater the porosity of the refractory material, the lower the thermal conductivity. If the volume density of the refractory material is too large and the porosity is low, the thermal conductivity will increase accordingly.
