LF精炼过程还原脱磷可能性分析  

Possibility of Reductive Dephosphorization of Molten steel During LF Refining

作　　者：张贺艳[1] 姜周华[1] 梁连科[1] 王文忠[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《材料与冶金学报》2002年第1期73-76,共4页Journal of Materials and Metallurgy

摘　　要：利用LF炉内的强还原条件进行还原脱磷 ,进一步降低钢中磷含量对冶炼极低磷钢具有十分重要的意义 .本文从热力学角度证实了LF炉内还原脱磷的可能性 ,并得出结论 :在LF炉内进行还原脱磷 ,必须在LF精炼前对钢水强化脱氧 ,使其钢中溶解氧 (质量分数 /% )小于 1 0 -4,渣中 (FeO)活度小于 1 0 -3 ,渣钢界面氧势低于临界氧势 .Reductive dephosphoriztion can lower phosphorus content further in molten steel under the strong reducing atmosphere in LF. The possibility of reductive dephosphorization during LF refining has been proved by thermodynamic calculation, and from the calculation it can be concluded that the oxygen content in steel must be below 10 -4 and the (FeO) activity must be below 10 -3 , and the oxygen potential at slag steel surface should be below the critical oxygen potential for dephosphorization.

关 键 词：还原脱 磷 LF精炼 临界氧势 

分 类 号：TF701.1[冶金工程—钢铁冶金]