The measures in technical management for the strengthening furnace type control ectare briefly introduced, the furnace life of 30t oxygen top blowing converter has been increased.

通过优化工艺操作，改善了溅渣护炉的效果，简要介绍强化炉型控制等技术管理措施，提高了30 t氧气顶吹转炉炉龄。

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The metallurgical effects of 80 t top blowing and combined blowing oxygen converters at Baotou Iron and Steel Co have been investigated.

对比了包头钢铁（集团）公司炼钢厂80 t顶底复合吹炼转炉和顶吹氧气转炉的冶金效果。

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The result shows that the effect of top blowing oxygen jet on the mixing time and circulation flow rate can be disregarded.

结果表明，顶吹氧射流对钢包混匀时间和循环流量的作用可以忽略。

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