CaO-SiO_2-MgO-FeO-MnO-P_2O_5脱磷专用转炉渣系磷分配比的热力学模型  

THERMODYNAMIC MODEL OF PHOSPHORUS DISTRIBUTION RATIO OF CAO-SIO_2-MGO-FEO-MNO-P_2O_5 IN DEPHOSPHORIZATION CONVERTER SLAGS

作　　者：苏晓伟 崔衡 张丙龙[3] 刘延强[3] 罗磊[3] 

机构地区：[1]北京科技大学工程技术研究院 [2]北京科技大学钢铁共性技术协同创新中心 [3]首钢京唐钢铁联合有限责任公司

出　　处：《河南冶金》2018年第1期14-18,37,共6页Henan Metallurgy

摘　　要：为提高"全三脱"工艺脱磷专用转炉的脱磷效率,基于离子-分子共存理论,建立了脱磷专用转炉渣系磷分配比的热力学模型;将模型计算的磷分配比和现场生产测得的磷分配比进行对比,并利用该模型探究了出钢温度、Fe O含量、二元碱度三个重要因素对磷分配比的影响。结果表明,出钢温度控制在1 580 K^1 610 K,二元碱度控制在1.6~2.0,Fe O含量控制在25%~30%之间既能达到较高的磷分配比,又能节省钢铁料和辅料的消耗。The thermodynamic model of phosphorus distribution in dephosphorization converter slag is established bythe theory of ion molecule coexistence in order to improve dephosphorization efficiency of dephosphorization converter withfull three stripping process. To compare the phosphorus distribution ratio calculated by the model with the phosphorus distri？bution ratio measured in the field,and the influence of three important factors, such as tapping temperature, FeO contentand binary basicity, on phosphorus ratio wasinvestigated. The results show that it can not only achieve high phosphorus rati？o, but also save the consumption of iron, steel materials and accessories by controlling tapping temperature in 1 580 K～1 610 K, binary basicity in 1.6～ 2.0 and FeO content in 25%～ 30%.

关 键 词：脱磷专用转炉 共存理论 磷分配比 

分 类 号：TF713[冶金工程—钢铁冶金]