新型侧搅拌流态化炼铁流化质量的优化  

Fluidization quality optimization of new side-stirred fluidized iron smelting

作　　者：吴越隆 李传富 李小龙[1,2] 王坤 刘燕[1,2] 张廷安 Wu Yuelong;Li Chuanfu;Li Xiaolong;Wang kun;Liu yan;Zhang Ting′an(Northeastern University Key Laboratory of Ecological Metallurgy of Multimetallic Mineral(Ministry of Education),Shenyang 110819,China;Northeastern University,School of Metallurgy,Shenyang 110819,China)

机构地区：[1]东北大学多金属共生矿生态化冶金教育部重点实验室,沈阳110819 [2]东北大学冶金学院,沈阳110819

出　　处：《材料与冶金学报》2024年第2期127-135,共9页Journal of Materials and Metallurgy

基　　金：国家自然科学基金资助项目(52204419);国家自然科学基金钢铁联合研究基金项目(U1760120).

摘　　要：为解决传统流态化炼铁过程中气-固分布不均匀导致的节涌、沟流和黏结失流问题,建立了侧搅拌流化床热态实验平台采用单因素实验方法研究了还原气组成、搅拌器转速、还原温度对铁矿粉还原过程的影响考察了流化床内床层压降和烟气成分随时间的变化,分析了还原产物的相关物相组成和微观形貌结果表明:随着CO体积分数的增加,铁的还原度不断提高侧搅拌流化床的气-固流化质量优于无搅拌流化床的气-固流化质量,搅拌器转速为160 r/min时气-固流化质量最佳最佳还原温度为850℃。To solve the problems of slugging,gully flow,and bond loss caused by uneven gas-solid distribution in the traditional fluidized iron-making process,a hot experimental platform of side stirring fluidized bed was establishedThe effects of reduction gas composition,agitator speed,and reduction temperature on the reduction process of iron ore powder were studied by single factor experimentThe changes in bed pressure drop and flue gas composition with time in the fluidized bed were investigatedThe results show that the reduction degree of iron increases with the increase of CO percentageThe gas-solid fluidization quality of the side-agitator fluidized bed is better than that of the non-agitator fluidized bed,and the best speed is 160 r/minThe optimal reduction temperature is 850℃。

关 键 词：流化床 侧搅拌 铁矿粉 流化质量 

分 类 号：TF552[冶金工程—钢铁冶金]