The microstructure and properties of fused-cast 33# AZS refractory brick with additive of desilicated zirconia or rare earth oxides were studied.

• 熔铸33%23AZS耐火砖添加少量脱硅锆或稀土氧化物的试验结果表明：该砖的相组成与显微结构得到改善。