摘要重钢5号高炉在炉役中期，针对炉喉钢砖变形、上翘，炉喉砖衬脱落、侵蚀严重；冷却壁烧坏、冷却水管脱裂、向炉内、外漏水；煤气串层严重，引起炉壳发红等隐患问题。通过对护炉技术的研究及实践，稳定了炉况，保护了炉墙和冷却壁，各项经济技术指标得到了提高。关键词高炉护炉技术实践StudyandpracticeabouttechnicalofsmeltingofprotectingBlastFurnacesLijunhongYinweiguoQianzhenghuaZhaoshiqing(ChongqingIronandSteelGroupCo.)AbstractInthemiddlecampaignlife,bedirectedwithtransform、bulgeoffurnacemouthsteelplate,shellingbricklining、corrosionseriouslyoffurnacemouth;firecrackingcoolingstave、breakingcoolingpipingleadtowaterleakagetowardsinandoutBF.Leakingcoalgasseriously,leadtoheatingfurnaceshellandsoonhiddentroubleproblem.ThroughstudyandpracticeabouttechnicalofsmeltingofprotectingBlastFurnaces,stebilizefurnacecondition,protectedfurnacewallandcoolingstave,raiseeverytechnical-and-economicappraisal.KeyWordsblastfurnacestechnicalofprotectingBFpractice1概况重钢5号高炉（1200m3）采用并罐式无料钟炉顶、有18个风口，两个铁口..