摘要
近年来,资源短缺和环保需求促使冶金、化工和材料领域出现了多种环保工艺,而固态物料在高温熔体内的熔解是熔融还原、渣中金属元素回收、金属化球团溶解等环保生产工艺的关键反应,可提高热量利用率、降低能耗并减小污染,但由于熔解反应速度过快、温度过高难以被直接观察。总结了高温熔体内固态物料熔解过程反应行为的研究方法和表征手段,研究方法主要分为圆柱旋转法、投入法、气体分析法等。通过测量圆柱直径(以及体积和质量)变化、观察反应物微观结构、分析反应尾气、测量渣相化学成分等方法表征反应速率、元素迁移、界面反应和反应程度等,并探究熔池温度、搅拌程度和预还原度等因素对熔解过程反应行为产生的影响。
In recent years,the shortage of resources and the demand for environmental protection have prompted to the emergence of various environmentally friendly processes in the fields of metallurgy,chemical engineering and materials.The melting of solid materials in high-temperature melts is the key reaction of molten reduction,metal element recovery in slag,metallized pellet dissolution and other environmentally friendly production processes,which can improve the heat utilization rate,reduce energy consumption and pollution.However,it is difficult to be directly observed due to the fast reaction speed and high temperature.The research and characterization methods of solid materials melting in high-temperature melt were summarized,which are mainly divided into cylinder rotation method,input method,gas analysis method,etc.By measuring the changes in cylinder diameter(as well as volume and mass),observing the microstructure of reactants,analyzing reaction exhaust gas,and measuring the chemical composition of slag phase,reaction rate,element migration,interface reaction,and reaction degree were characterized.The effects of factors such as molten pool temperature,stirring degree,and pre reduction degree on the reaction behavior during the melting process were explored.
作者
谭宇博
刘旭
张建良
王桂林
王耀祖
刘征建
TAN Yubo;LIU Xu;ZHANG Jianliang;WANG Guilin;WANG Yaozu;LIU Zhengjian(School of Metallurgy and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;Dagushan Pellet Plant,Anshan Iron and Steel Group Co.,Ltd.,Anshan 114000,Liaoning,China;School of Intelligence Science and Technology,University of Science and Technology Beijing,Beijing 100083,China;Institute of Artificial Intelligence,University of Science and Technology Beijing,Beijing 100083,China)
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2023年第11期1319-1329,共11页
Journal of Iron and Steel Research
基金
国家自然科学基金面上资助项目(52174291)
北京市科技新星资助项目(Z211100002121115)
博士后面上基金资助项目(2021M690369)
中央高校基金科研业务费资助项目(06500170)
广东省科学技术厅区域联合基金-青年基金资助项目(2020A1515111008)。
关键词
炼铁
熔解行为
固液反应
熔融还原
高温熔体
ironmaking
dissolution behavior
solid-liquid reaction
melt reduction
high-temperature melt
