What is the heat -resistant temperature of light insulation and refractory fire bricks？
The thermal insulation layer of the kiln furnace lining is to protect the shell and save energy. Most of them use lightweight heat insulation bricks, light quality insulation watering fiber plates and other materials for the insulation layer.
Due to the large quality of light insulation and refractory fire bricks or pouring gas pores, it is prone to shrinking and deformation when heating during use. Therefore, in different temperature conditions, the heat insulation tiles or pouring materials of different materials should be selected to maintain the stable thermal insulation layer in the furnace. If shrinkage occurs, it is likely to cause the insulation layer in the furnace to deform or crack and increase the heat dissipation loss.
Therefore, when choosing a light insulation and refractory fire bricks or insulation material, it mainly depends on the ability to shrink and deform under the action of resisting heating. The temperature of the insulation fire -resistant brick is generally increased as the volume density increases. When the volume density is too large, the insulation effect is not good, the temperature of the volume density is good, but the intensity is too low, which is extremely prone to peeling.
In other words, at different temperatures, you must choose the insulation brick or pouring material suitable for the temperature, or the fiber material as the insulation layer. The following is the different temperature of the heat insulation and refractory fire bricks or pouring materials for reference:
The use temperature of the slag cotton is 600 ° C, and the temperature range of the use of perlite insulation materials is 50-1000 ° C; the temperature range of calcium silicate board is 650-1000 ° C; The temperature of algae heat insulation and refractory fire bricks is 1000-1200 ° C; refractory ceramic fiber is 1000-1300 ° C; calcium long stone light heating tiles are suitable for temperature 1100-1300 ° C; lightweight clay insulation bricks are suitable The suitable temperature of high aluminum insulation bricks is 1350-1500 ° C; light silicon insulation bricks are suitable for 1500-1550 ° C; polycrystalline aluminum fiber use temperature is 1400-1600 ° C; 1350-1650 ° C; the temperature of lightweight corundum brick is 1650-1800 ° C; aluminum oxide empty heart ball heating tiles 1650-1800 ° C; oxide fiber and hollow ball heat thermal insulation bricks are suitable for 1800-2000 ° C.
