Aluminium siliceous glass inclusions

It mostly from fused brick, clay brick, high alumina brick, such as refractory erosion, or glass caused by clay mixed with high aluminum in the batch. Aluminium siliceous refractory erosion degree is often closely related to the quality of the refractory, the structure is not dense refractory brick because there is gap, glass easily from the wool stoma or seeping into microcrack, with diffusion metasomatism between components and further firebrick, and form a rich aluminum glass. If the glass attached to the surface of the brick, because of its viscosity and surface tension are very big, can form a protective layer on the surface of brick, brick erosion becomes slow. But when the temperature of the melted fluctuations, frequent or liquid level fluctuations, fluid flow is disturbed, in the structure of the kiln body corresponding erosion down from the high viscosity of high surface tension of the glass and into the main body of glass formed a line or stripe. After the surface erosion of refractory brick, brick detritus is peeling off may, after the high temperature for a long time to also can be made of crystal phase into the glass phase, if not fully homogenization to form aluminium siliceous nodules. Fused refractory microstructure is not appropriate, in the brick inside of the coarse grain and empty, and the resulting cracks, this will lead to erosion acceleration, especially the temperature too high or frequent fluctuations of furnace temperature is even more extreme.