Físico e químico índice de corindo mulita tijolo

Alumina content of corundum brick is more than 90%, corundum as the main crystalline phase of refrattory products. High compressive strength at room temperature (up to 340MPa). High load ssofting starting temperature (maior que 1700 grau ),

Corundum brick is an alumínio-silício refratário produto com corundum as the main crystalline phase. Corundum brick has excellent high temperature mechanical properties, good erosion resistance and wear resistance. Raw materials are natural water-conining aluminum oxides such as tridiaspore, diaspore, etc. Estes hidratados podem ser aquecidos e desidratados para obter alumina ( -Al2O3). It is then heated to 1450 degree and converted em corundum ( -Al2O3). Porque natural corundum and natural pure diaspore reserves in nature are few. Portanto, industrial alumina is used as raw material for the manufacture of corundum. The obtained industrial alumina is mainly -Al2O3. When -Al2O3 is converted to -Al2O3, the volume shrinkage rate is 13%, and in order to make the -Al2O3 grain development intact, the raw material needs to be treated with higher temperature. Depois alta temperatura sinterização, -Al2O3 grãos pode crescer 25 ~ 40 vezes.