熔融态铁氧化物碳氢还原热力学与动力学研究现状  

Research status on thermodynamics and kinetics of carbon and hydrogen reduction of molten iron oxides

作　　者：卢立金 王锋[1,2] 王海风 邱健[1] 平晓东 LU Lijin;WANG Feng;NG Haifeng;QIU Jian;PING Xiaodong(State Key Laboratory of Advanced Steel Processes and Products,Central Iron and Steel Research Institute Co.,Ltd.,Beijing 100081,China;Research and Development Department,CISRI Sunward Technology Co.,Ltd.,Beijing 100081,China)

机构地区：[1]钢铁研究总院有限公司先进钢铁流程及材料国家重点实验室,北京100081 [2]钢研晟华科技股份有限公司,北京100081

出　　处：《钢铁研究学报》2024年第2期150-162,共13页Journal of Iron and Steel Research

基　　金：十三五国家重点研发计划资助项目(2019YFC1904640);中国宝武低碳冶金创新基金资助项目(BWLCF202122)。

摘　　要：氢能在冶金领域的应用是实现低碳发展的重要途经之一。目前虽然在富氢高炉和氢基直接还原炼铁领域取得诸多成果,但在碳氢熔融还原炼铁仍有许多不足之处。通过分析碳、CO以及氢气还原熔融态铁氧化物的研究,总结熔融还原过程基本热力学特点,并对影响动力学参数的因素进行分析。结果表明,在熔融温度(1369℃)以上氢气还原FeO在热力学上有一定的优势。还原温度高于1538℃,(即还原物和还原产物都为熔融态),还原气体流量为3 mL/min以及碱度为1.1~1.3时有利于熔融反应的进行。关于碳氢还原熔融态铁氧化物的研究还不充分,还需要进一步解析还原过程、限制环节以及微观机制等。The application of hydrogen energy in metallurgy is one of the significant ways to achieve low-carbon development.At present,although many achievements have been made in the field of hydrogen-rich blast furnace and hydrogen assisted direct reduction of iron oxides,there are still many shortcomings in carbon and hydrogen molten reduction ironmaking.By analyzing the reduction of molten iron oxides by carbon,CO and hydrogen,the basic thermodynamic characteristics of the smelting reduction process were summarized,and the factors affecting the kinetic parameters were analyzed.The results indicate that the reduction of FeO by hydrogen above the melting temperature(1369℃)has advantageous in thermodynamics.And when the reduction temperature of the reduction reaction is raised above 1538℃(both the reduced material and the reduced product are in the molten state),the reduction gas flow rate is 3mL/min,and the alkalinity is 1.1-1.3,it is conducive to the melting reaction.The research on the reduction of molten iron oxides by carbons and hydrogen is not yet sufficient,and further analysis of the reduction process,limiting links and microscopic mechanisms is needed.

关 键 词：熔融还原 氢冶金 热力学 动力学 

分 类 号：TF5[冶金工程—钢铁冶金]