复吹转炉溅渣层与镁碳砖之间结合的现场试验研究

Field experimental study on bonding between slag-splashed layer and MgO-C brick in a converter

将镁碳砖试样从出钢口送入复吹转炉内 ,溅渣 4min后抽出进行化学分析和显微镜观察。结果表明 :溅渣层的平均成分与溅渣前的炉渣大致相同 ;1 80t复吹转炉出钢口部位溅渣层平均厚度 1 0 .4mm ;本试验采用高氧化性炉渣进行溅渣 。

The samples of MgO-C brick with slag-splashed layer were obtained in taphole after slag splashing for 4 min.It was shown from chemical analysis that chemical composition of slag before slag splashing was similar to that of slag-splashed layer.Thickness of slag-splashed layer at the taphole of a converter of 180 t is 10.4 mm.When slag was high oxidative,there was discontinuous gap between slag-splashed layer and MgO-C brick.