矾土基电熔尖晶石对矾土基浇注料性能的影响

Influence of bauxite-based fused spinel on properties of bauxite-based castables

为了开发矾土基电熔尖晶石的应用，在矾土骨料、纯铝酸钙水泥、Al2O3微粉、SiO2微粉等原料加入量不变（分别为65％、4％、4％和1％）的条件下，变化矾土基电熔尖晶石的加入量（分别为0、6％、8％、10％和12％）和电熔白刚玉细粉的加入量，研究了矾土基电熔尖晶石对矾土基浇注料常温物理性能、热态抗折强度、抗热震性以及抗渣性的影响。结果表明，与不加矾土基电熔尖晶石的浇注料相比，尖晶石加入量为6％-12％时，浇注料的常温性能相差不大，但热态抗折强度及抗热震性均有所提高，抗渣性有很大改善。

To develop the application of bauxite-based fused spinel in castables,keeping the contents of bauxite aggregate, Pure calcium aluminate cement, micro-alumina and micro-silica at 65 % ,4% ,4 %, 1 % respectively, changing the additions of bauxite-based fused spinels from 0,6% ,8%,10% to 12% respectively and fused white corundum fines also changed,the influences of bauxite-based fused spinels on cold physical properties, hot modulus of rupture,thermal shock resistance and slag resistance of bauxite-based castables were investigated. The results indicate that, Compared with the castables without bauxite-based fused spinel ,the cold properties of castables with 6%-12% spinel addition is similar,but hot modulus of rupture,thermal shock resistance and slag resistance are improved ,especially slag resistance.