高效低耗转炉大废钢比技术路径研究  

Research on high efficiency low consumption high scrap ratio converter

作　　者：方文 杨宁川[1] 游香米 吴令[1] FANG Wen;YANG Ningchuan;YOU Xiangmi;WU Ling(Steelmaking Business Section of Iron&Steel Business Division,CISDI Engineering Co.,Ltd.,Chongqing 400013,China;Steelmaking Research Department of Ferrous Smelting Research Division,CISDI R&D Co.,Ltd.,Chongqing 401122,China)

机构地区：[1]中冶赛迪工程技术股份有限公司钢铁事业本部炼钢事业部,重庆400013 [2]中冶赛迪技术研究中心有限公司钢铁冶炼研究所炼钢研究室,重庆401122

出　　处：《炼钢》2020年第6期8-13,共6页Steelmaking

摘　　要：随着废钢供给增加和节能环保要求日趋严格,行业对高效低耗转炉大废钢比技术需求日益迫切。目前国内转炉高废钢比技术方案缺少系统性,且转炉废钢比一般不超过35%。系统性的转炉大废钢比技术应围绕废钢如何入炉和能量如何补偿两个角度开展研究。废钢预热和炉内碳质高效燃烧是进一步提升废钢比的关键技术。结合碳氧燃烧反应理论及已有实践,结果表明:通过提升炉内碳氧反应二次燃烧率及燃烧向熔池的传热效率,相比传统的转炉顶吹技术,此时用于加热熔池的碳氧反应放热可提升88.3%以上。With the increasing supply of scrap and severe requirements for energy conservation and environmental protection,high efficiency low consumption high scrap ratio converter technology is demanded increasingly urgent in steel industry.At present,the technical scheme of high scrap ratio converter lacks systematization in our country,and the scrap ratio of converter is generally not exceed 35%.Systematic high scrap ratio converter technology should be researched around how scrap is added and how heat gap in converter is compensated.Preheating scrap and good combustion in the converter are the key technologies to improve converter energy utilization efficiency and further increase the scrap ratio.Combining C-O reaction theory and existing trials,the result shows that post combustion ratio(PCR)and heat transfer efficiency(HTE)of C-O reaction to the molten steel can be significant improved.Compared to the common top-blowing,the current C-O reaction heat transferred to the molten steel can be raised by more than 88.3%.

关 键 词：废钢比 碳氧反应 二次燃烧 热效率 

分 类 号：TF746[冶金工程—钢铁冶金]