通过工业试验研究120 t顶底复吹转炉双渣法脱磷一次倒渣时的供氧制度、枪位控制和一次倒渣条件对脱磷的影响.结果表明最佳的一次倒渣工艺条件为:一倒吹氧时间和吹氧量应分别控制在390～ 420 s和2 300～2400 m3;-倒温度、碱度、FeO以及P2O5含量分别控制为1 400～1 420℃、≥2.06、≥10.97％和2.54％ ～ 3.0％时,可以实现一倒钢液磷含量最低为0.032％,脱磷率最高为75.57％.
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