What are the properties and uses of mullite insulation bricks?
Let's first understand how mullite insulation bricks are made. It is made of high bauxite clinker as the main material, plus a small amount of clay or raw bauxite as a binder, by molding, sintering and made, can be a good protection of clay resources. The general alumina content is between 65-75%. Their high temperature performance mainly depends on the content of alumina and the uniformity of the distribution of mullite phase and glass.
The performance and refractoriness of Mullite insulation bricks are very high, and they can withstand high temperatures of 1800 ° C, but at 1600 to 1700 ° C, Mullite insulation bricks will begin to soften and will not burn. However, its normal temperature pressure strength is also high, between 70 and 260MPa, good thermal shock resistance. Mullite insulation brick is a new type of refractory material in China, which can directly contact the flame, has the characteristics of high temperature resistance, high light, low thermal conductivity and remarkable energy saving effect.
