铁浴熔融还原炉冶炼过程能质输运模型  

Energy-mass transport model of smelting process in iron bath smelting reduction vessel

作　　者：贾利军 秦德越 姜山 李宝宽 JIA Lijun;QIN Deyue;JIANG Shan;LI Baokuan(Shandong Metallurgical Design Co.,Ltd.,Jinan 250101,Shandong,China;College of Metallurgy,Northeast University,Shenyang 110819,Liaoning,China)

机构地区：[1]山东省冶金设计院股份有限公司,山东济南250101 [2]东北大学冶金学院,辽宁沈阳110819

出　　处：《中国冶金》2025年第3期76-85,122,共11页China Metallurgy

基　　金：国家自然科学基金资助项目(51934002)。

摘　　要：HIsmelt是熔融还原炼铁中的一种代表性工艺,取消球团、烧结和焦化流程以降低污染物排放是该工艺的突出特点。基于物料平衡和能量平衡建立了铁浴熔融还原炉内冶炼过程能质输运模型,模型中着重考虑了水煤气反应对质量输运和能量输运的影响。比较了有无水煤气反应对铁水、铁渣和烟气成分的影响,与实际生产数据相比,烟气成分模型预报准确性得到提升。与未考虑水煤气反应的模型相比,考虑水煤气反应提高了冶炼能质输运模型的合理性。模型能够准确计算铁水产量、铁渣产量、烟气体积、铁水成分、铁渣成分和烟气成分,计算结果与实际生产结果吻合。在此基础上探究并得出结论,随着铁水温度的升高,铁水中的铁、碳、硫元素含量以及铁渣中锰元素含量逐渐下降,铁渣中氧化亚铁含量逐渐升高;铁渣产量呈先下降后上升的趋势,并在1748 K达到最低,每吨铁水产生0.47 t铁渣。能质流转模型的建立为生产预测提供了有力的依据。HIsmelt is a representative process in smelting reduction ironmaking.The elimination of pelletizing,sintering and coking processes to reduce pollutant emissions is a prominent feature of the process.Based on the material balance and energy balance,the energy-mass transport model in iron bath smelting reduction vessel was established.In the model,the effects of water gas reaction on mass transport and energy transport were emphatically considered.The effects of reaction with or without water gas on the composition of molten iron,iron slag and flue gas were compared.The effects of the water-gas reaction,both with and without water gas,on the compositions of molten iron,slag,and flue gas were analyzed.Compared to actual production data,the model's prediction accuracy is improved.In addition,the energy-mass transfer model demonstrates greater rationality compared to the model that excludes the coal-water gas reaction.The model can calculate the production of molten iron,the production of iron slag,the volume of flue gas,the composition of molten iron,the composition of iron slag and the composition of flue gas.The results of the model calculations are in agreement with the actual production data.On this basis,it is concluded that with the increase of molten iron temperature,the production of hot metal,the content of carbon and sulfur in molten iron,and the content of manganese in iron slag gradually decrease,while the content of ferrous oxide in iron slag gradually increases.However,the production of iron slag demonstrates a fluctuating pattern,reaching a minimum at 1748 K,and yielding 0.47 t of iron slag per ton of molten iron.The development of an energy-mass transport model serves as a robust foundation for accurate production forecasting.

关 键 词：熔融还原 HIsmelt工艺 能质输运模型 水煤气反应 非高炉炼铁 

分 类 号：TF55[冶金工程—钢铁冶金]