0.8 Poly Light High Alumina Brick: Key Parameters and Application Advantages

In the lining and insulation layer of high-temperature industrial kilns, 0.8 poly light high alumina bricks are widely used due to their excellent thermal insulation performance and reliable compressive strength. The characteristics of this refractory material mainly include low bulk density, low thermal conductivity and high compressive strength, and it is an indispensable part of high-temperature kiln construction.

Bulk density and porosity

The "0.8" in 0.8 poly light high alumina brick refers to its volume density, which is 0.8g/ ^cm3 . The advantage of this volume density is that the porosity of the brick is as high as 66% to 73%, which effectively reduces the thermal conductivity and improves the thermal insulation performance. Generally, the volume density is inversely proportional to the porosity. The higher the porosity, the lower the thermal conductivity of the material.

Thermal conductivity and compressive strength

The thermal conductivity of this type of poly light high alumina brick is about 0.35W/(m·K), and its compressive strength is between 1 and 8MPa. This means that it can not only maintain a low thermal conductivity in a high temperature environment to ensure the thermal insulation effect of the kiln, but also withstand greater mechanical pressure and is not easy to break.

Influencing factors

Although the parameters of 0.8 poly light high alumina brick are very ideal, its thermal conductivity may be affected by factors such as manufacturer, product batch, raw material composition, etc. Therefore, it is recommended to refer to the specific parameters provided by the manufacturer or conduct professional testing when making actual selections to ensure accurate thermal conductivity data.

Application fields and comprehensive advantages

With its excellent thermal insulation effect and reliable strength, 0.8 poly light high alumina bricks are widely used in the lining and insulation construction of high-temperature kilns in the fields of power, metallurgy, nonferrous metals, petrochemicals and building materials. Its high porosity and low thermal conductivity make it an ideal insulation material, effectively reducing heat loss and improving the energy efficiency of kilns.

Summarize

In summary, the application of 0.8 poly light high alumina bricks in high temperature industrial furnaces has been fully verified, and its key parameters such as bulk density, thermal conductivity and compressive strength ensure its excellent thermal insulation performance and durability. When selecting such refractory materials, it is important to pay attention to the specific production and testing data to ensure the optimization of the application effect.