包钢7号高炉停炉放残铁实践  

Practices on Blowing Out and Discharging Residual Liquid Iron for 7#Blast Furnace of Baotou Steel

作　　者：吴建光 曲云玉 高瑞平 李瑞杰 刘耀 Wu Jian-guang;Qu Yun-yu;Gao Rui-ping;Li Rui-jie;Liu Yao(Iron-making Plant of Inner Mongolia Baotou Steel Rare Earth Steel Plate Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古包钢稀土钢板材有限责任公司炼铁厂,内蒙古包头014010

出　　处：《包钢科技》2024年第2期10-12,16,共4页Science & Technology of Baotou Steel

摘　　要：包钢7号高炉死铁层较深,为缩短工期,减少停炉后扒除炉缸残存渣铁工作量,采取降料线放残铁的停炉方式。放残铁是高炉停炉操作中最重要的环节之一,放残铁效果好坏直接影响炉缸清理时间。文章主要介绍了包钢7号高炉停炉放残铁流程。前期的准备工作包括活跃炉缸、确定残铁口位置、残铁量计算、残铁沟的制作等,对高炉停风后炉皮以及冷却壁的切割、残铁口泥套的制作以及整个残铁排放过程做了详细介绍。7号高炉放残铁过程实现了安全、有序,停炉后清理炉缸时发现炉缸内基本未见残铁,表明本次放残铁取得了良好的效果,为今后高炉大中修放残铁积累了经验。The old horse of 7#blast furnace of Baotou Steel is deeper.In order to shorten the project duration and reduce workload of removing residual slag iron in furnace hearth after blowing out,the mode of dropping stockline and discharging residual liquid iron is adopted.It is one of the most important links in blowing out operation of blast furnace to discharge residual liquid iron and its effect directly affects the clearance time of furnace hearth.In the paper,the process of discharging residual liquid iron for 7#blast furnace of Baotou Steel during blowing out is mainly introduced.The previous preparation work mainly includes such as activating furnace hearth,confirming position of residual liquid iron notch,calculating amount of residual liquid iron and making residual liquid iron runner.The cutting of shell of blast furnace and cooling stave,manufacture of mud sleeve for residual liquid iron notch as well as the whole process of discharging residual liquid iron after blowing out are introduced in detail.The process of discharging residual liquid iron of 7#blast furnace is safe and ordered.After blowing out,it is found that there is basically no residual iron in the furnace hearth when cleaning it,which indicates that the effect of discharging residual liquid iron this time is good and experiences are gathered for discharging residual liquid iron in future heavy and medium repairs of blast furnace.

关 键 词：高炉 放残铁 炉缸 

分 类 号：TF548[冶金工程—钢铁冶金]