基于炉缸渣铁滞留量的高炉炉缸活性研究  

Study on Hearth Activity Characterized By Slag-Iron Retention in BF Hearth

作　　者：刘彦祥[1] 郭子昱 焦克新[1] 张建良[1] 徐益军 丁望 杨耀明 LIU Yanxiang;GUO Ziyu;JIAO Kexin;ZHANG Jianliang;XU Yijun;DING Wang;YANG Yaoming(School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;Ironmaking Plant,Xiangtan Iron&Steel Co.,Ltd.,Xiangtan 411100,Hunan,China)

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]湖南湘潭钢铁有限公司炼铁厂,湖南湘潭411100

出　　处：《炼铁》2024年第2期49-55,共7页Ironmaking

基　　金：国家自然科学基金资助项目(52204334)。

摘　　要：针对国内外对炉缸活性表征不明晰的问题,建立以炉缸渣铁滞留量表征炉缸活性的模型,定量分析高炉操作参数对炉缸活性的作用比重,并提出提高炉缸活性的操作手段。结果表明:①渣铁焦物性对渣铁滞留率的影响顺序为:铁水温度>CSR>焦炭粒度>CRI>炉渣碱度>镁铝比;②去除滞留率对滞留量的影响,高炉操作参数对渣铁滞留量的影响顺序为:风量>铁口深度>风温>风压>喷煤量>氧气量;③高炉生产中,可采用原燃料粒级及性能管控技术、高风速大动能操作技术、渣铁流动控制技术、渣铁排放管控技术高效调控炉缸活跃状态。a novel model to characterize hearth activity based on the retention rate/amount of slag-iron in BF is proposed to cope with unclear presentation of hearth activity characterization given both at home and abroad,so as to quantitatively analyze the influence of various BF operating parameters on hearth activity and figure out the solution to improve hearth activity.The findings reveal:(1)the influence priority of slag-iron-coke physical property on slag-iron retention rate is:hot metal temperature>CSR>coke particle size>CRI>slag alkalinity;(2)regarding less of the influence of retention rate on the retention amount,the influence priority of BF operating parameters on the slag-iron retention amount ranks as blast flowrate>taphole depth>blast temperature>injected coal flowrate>oxygen flowrate;(3)some technologies are effective in the production to regulate the active state of the furnace hearth,for instance,the technologies of raw fuel grading and performance control,high blasting speed and high kinetic energy operation,slag and iron flow control,and slag and iron discharge control.

关 键 词：高炉 炉缸 炉缸活性 渣铁滞留率 渣铁滞留量 操作参数 

分 类 号：TF573[冶金工程—钢铁冶金]