120 t转炉第一次倒渣脱磷参数计算与工艺试验  

Calculation and Process Test for Dephosphorization Parameter of 120 t Converter

作　　者：张天旭[1] 宋劲松[1] 周东东 刘翔宇[1] Zhang Tianxu;Song Jingsong;Zhou Dongdong;Liu Xiangyu(Industrial Technology Centre,Chengde Petroleum College,Chengde 067000;Collaborative Innovation Center of Steel Technology,University of Science and Technology Beijing,Beijing 100083)

机构地区：[1]承德石油高等专科学校工业技术中心,承德067000 [2]北京科技大学钢铁共性技术协同创新中心,北京100083

出　　处：《特殊钢》2020年第2期25-27,共3页Special Steel

基　　金：河北省高等学校科学技术研究项目(QN2019227)。

摘　　要：通过脱磷与还原磷的平衡热力学研究,确定了120 t转炉双渣法冶炼低磷钢时最佳一次倒渣温度与碱度之间的关系。通过对磷分配比Lp计算,得到了1 450℃下,碱度、(FeO)对其影响。结合热力学软件Factsage,得到最佳的脱磷渣碱度和(FeO)。计算表明,随着炉渣碱度的增大,最佳脱磷温度区间向高温区移动;1 450℃下,最佳的第一次倒渣碱度为2,最佳(FeO)为20%~25%。According to thermodynamics studying on the balance of dephosphorization and phosphorus reduction,the relationship between pouring temperature and slag basicity at first deslagging for double slag process in 120 t converter semelting low phosphorus steel has been difined.According to calculating phosphorus partition ratio Lp,it gets the influence of basicity、(FeO) on Lp at 1 450℃ and obtains the optimal dephosphorization slag basicity and(FeO) value through Factsage software.The calculation shows that with the increase of slag basicity,the optimal temperature ranges for dephosphorization move to high;the optimal basicity is 2 and(FeO) is 20%~25% at 1 450 ℃ for first deslagging process.

关 键 词：双渣法 脱磷 温度 碱度 (FeO) 

分 类 号：TF713[冶金工程—钢铁冶金]