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在30t顶底复吹转炉熔池炉壁增加侧吹枪组成顶底侧吹转炉,通过实验室模拟试验,测定不同吹气搅拌技术的转炉熔池的混均时间。结果发现:顶底侧吹搅拌效果最好,熔池混匀时间比原顶底复吹转炉平均降低65%,且熔池混匀时间呈现τ顶底侧吹<τ顶侧吹<τ纯底吹<τ顶底复吹<τ纯顶吹的规律。该技术首先在福建三钢(集团)公司炼钢厂的30t顶底复吹转炉熔池侧壁增加一支侧吹枪进行大生产工业试验,结果表明:顶底侧吹转炉碳氧积低,脱磷效果好,降碳快,全炉役侧吹枪可见,冶炼技术指标得到很大改善。
In the 30t top and bottom blowing furnace furnace wall to increase the side of the blower to form the top and bottom side of the converter, through laboratory simulation tests, determination of different blowing air mixing furnace mixing time. The results showed that the mixing effect of top and bottom side blowing was the best, mixing time in the bath was reduced by 65% on average compared with the original top and bottom blowing converter, Blowing <τ top and bottom blowing <τ pure top blowing rule. The technology first in Fujian SanSteel (Group) Company steelworks 30t top and bottom blowing furnace side wall to increase a side-blown gun for large-scale production industrial test results show that: top and bottom side blowing converter carbon and oxygen product is low, Dephosphorization effect is good, fast carbon reduction, the whole furnace side blowing machine visible, smelting technical indicators have been greatly improved.