转炉多元喷吹提钒的基础研究  

Fundamental research on vanadium extraction by injecting multiple gases in converter

作　　者：吕明[1] 李航 谢堃 王建立 LV Ming;LI Hang;XIE Kun;WANG Jianli(School of Metallurgical Engineering,Xi′an University of Architecture and Technology,Xi′an 710055,Shaanxi,China)

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055

出　　处：《钢铁研究学报》2021年第6期485-492,共8页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(51604210);中国博士后科学基金资助项目(2019T120882,2018M633477);陕西省工业重点攻关项目(2019TSLGY05-08);陕西省企业联合基金资助项目(2019JLP-05)。

摘　　要：转炉提钒是实现钢-钒分离的关键环节,反应动力学条件弱严重影响转炉提钒效果。基于此,提出转炉多元气体喷吹提钒,通过热力学研究了CO_(2)与C、V反应的选择性氧化转化温度,根据物理热及化学热两方面分析了多元气体的综合冷却效果,并利用熔池搅拌能量密度量化了多元气体的搅拌能力。研究表明:利用多元气体喷吹提钒是可行的,CO_(2)的物理和化学冷却效果均强于O2和N_(2),底吹CO_(2)的搅拌能力大于N_(2)。影响熔池搅拌能量密度的因素由大到小依次为CO_(2)利用率、氧枪枪位、顶吹流量和冶炼温度。Vanadium extraction in converter is the key process to realize the separation of steel and vanadium,but the effect of vanadium extraction is seriously affected by the weak kinetic condition.Based on this,vanadium extraction by injecting multiple gases was put forward.The selective oxidation and conversion temperature of carbon and vanadium by injecting carbon dioxide was studied by thermodynamics,and the comprehensive cooling effect of the multiple gases was analyzed by physical heat and chemical heat,then the mixing capacity of the multiple gases were quantified by means of the stirring energy density of molten pool.The results show that it is feasible to extract vanadium by injecting multiple gases.The physical and chemical cooling effects of CO_(2) are stronger than those of O2 and N_(2).The stirring capacity of bottom blowing CO_(2) is greater than N_(2).The factors affecting the stirring energy density of molten pool are utilization rate of CO_(2),oxygen lance height,top blowing flow rate and smelting temperature in descending order.

关 键 词：转炉提钒 多元喷吹 熔池搅拌 能量密度 选择性氧化 

分 类 号：TF723[冶金工程—钢铁冶金]