Development and Application of Al2O3-MgO-Cr2O3 Slag Wall Castables for Tundish
Experiments of Al2O3-MgO-Cr2O3 slag wall castables for tundish were developed to compare the property difference between other two samples,using sintered magnesia,fused magnesia,bauxite,brown fused corundum,sintered alumina,ultrafine active alumina,silica fume and chromium oxide powders as raw materials,plus high-range water reducing admixture.The results indicated that the fired strength(1 200℃ and 1 500 ℃)of the new castables is all above others,except of 110 ℃ situation.The thermal shock resistance and slag resistance of Al2O3-MgO-Cr2O3 castables are better.On the basis of previous tests,Al2O3-MgO-Cr2O3 slag wall were produced and carried out application.The using effect in practice was satisfying and up to the expectation.