矿焦混装对钒钛矿还原过程钒迁移行为影响的研究  

Research on Effect of Ore-Coke Mixed Charging on Vanadium Migration Behavior in Vanadium Titanium Ore Reduction Process

作　　者：张巧荣 王彬[2] 赵凯 张玉柱 Zhang Qiaorong;Wang Bin;Zhao Kai;Zhang Yuzhu(College of Metallurgy and Energy,North China University of Science and Technology,Tangshan,Hebei,China;State Key Laboratory of Advanced Steel Processes and Products,Central Iron and Steel Research Institute,Beijing,China)

机构地区：[1]华北理工大学冶金与能源学院,河北唐山063210 [2]钢铁研究总院先进钢铁流程及材料国家重点实验室,北京100081

出　　处：《矿产综合利用》2023年第3期14-20,26,共8页Multipurpose Utilization of Mineral Resources

基　　金：国家重点研发计划资助项目,气-粉-液传输数值模拟及高效质能转换(2017YFB0603802)。

摘　　要：这是一篇冶金工程领域的论文。矿焦混装作为一种有效改善料柱透气性、降低焦比的技术手段被广泛应用于改善高炉顺行过程。本文研究了高炉采用钒钛矿矿焦混装布料过程,钒在不同温度下的还原与迁移行为。结果表明:在温度低于1350℃时,层装区域钒元素还原条件优于混装区域;熔化区间温度内钒元素多集中于渣铁界面处;软熔带中铁酸镁的生成会促进钒向在铁液附近聚集,碱性氧化物MgO能促进V向Fe中的迁移。This is a paper in the field of metallurgical engineering.As a technical method to effectively improve the permeability of charge column and reduce the coke ratio,mixed charging of ore and coke is widely used to improve the forward process of blast furnace.In this paper,the reduction and migration behavior of vanadium at different temperatures in the mixed charging process of vanadium titanium ore and coke in blast furnace are studied.The results show that when the temperature is lower than 1350℃,the reduction condition of vanadium in the layer loading area is better than that in the mixed loading area;In the melting zone,vanadium is mainly concentrated at the interface between slag and iron;The formation of magnesium ferrite in the soft melt zone can promote the vanadium to gather near the molten iron,and the basic oxide MgO can promote the migration of V to Fe.

关 键 词：冶金工程 钒钛矿 矿焦混装 软熔带 钒迁移 

分 类 号：TD985[矿业工程—选矿]