120t转炉双联炼钢工艺脱磷试验研究  

Researches on Dephosphorization in 120 t Converter Duplex Steelmaking Technology

作　　者：逯志方[1] 朱荣[1] 林腾昌[1] 吕明[1] 张桂林[1] 

机构地区：[1]北京科技大学冶金生态工程学院,北京100083

出　　处：《工业加热》2012年第6期53-55,共3页Industrial Heating

摘　　要：对脱磷转炉脱磷机理和造渣过程进行了分析,研究了半钢温度、(C)对终点(P)的影响,炉渣碱度、(FeO)对炉渣(P2O5)的影响。结果表明:终点温度超过1 360℃,半钢(P)增加,脱磷效果变差;半钢(C)在3.0～3.4%之间时,半钢平均(P)较低,在0.020%以内;炉渣(FeO)低于30%时,渣中(P2O5)含量随炉渣(FeO)增加而增加,当炉渣(FeO)继续增加时,渣中(P2O5)变化不大;当炉渣碱度大于1.5时,炉渣碱度增加对渣中(P2O5)影响不大,主要是低温制约了化渣效果。Dephosphorization mechanism and slag forming in the dephosphorization converter are analyzed,the influence of semi-steel steelmaking temperature,（C）to（P）of semisteel,slag basicity and（FeO）in the converter slag to（P2O5）in theconverterslag are researched.The results show that（P）increased and dephosphorization effect becomes worse when the temperature over 1 360 ℃.The average（P）is within 0.020% when semi-steel（C）is in 3.0%～ 3.4%.Slag（P2O5）will increase with the increase of slag（FeO）for the（FeO）below 30%,while slag（FeO）continue to increase,little change to the slag（P2O5）.Because of the effect of low temperature to slagging,slag basicity do little effect to（P2O5）when slag basicity over 1.5.

关 键 词：炼钢 脱磷 铁水预处理 

分 类 号：TF704.4[冶金工程—钢铁冶金]