转炉高效脱硫技术研究及应用  

Research and Application of High-efficiency Desulfurization Technology for Converter

作　　者：孙利钘[1] 韩学义 Sun Lixing;Han Xueyi(Shougang Changzhi Iron&Steel Co.,Ltd.,Changzhi Shanxi 046031,China)

机构地区：[1]首钢长治钢铁有限公司,山西长治046031

出　　处：《山西冶金》2024年第8期237-238,246,共3页Shanxi Metallurgy

摘　　要：长钢炼钢厂主要生产钢种要求w(S)≤0.040%,但铁水w(S)为0.020%~0.070%,波动较大且带渣量大(约1.0%),在无铁水预处理工艺前提下,通过采用高碱度、提余锰、双渣工艺等措施,使脱硫率达到40%以上,提高约10%,为炉后直上工艺奠定基础,降低精炼炉工艺成本约20元/t。Changgang Steel Plant mainly produces steel grades with a requirement of w(S)≤0.040%,but the w(S)of molten iron is 0.020%~0.070%,which fluctuates greatly and has a large amount of slag(about 1.0%).Without the pretreatment process of molten iron,measures such as high alkalinity,residual manganese extraction,and double slag process are adopted to achieve a desulfurization rate of over 40%,an increase of about 10%,laying the foundation for the direct up process after the furnace and reducing the refining furnace process cost by about 20 yuan/t.

关 键 词：高碱度 提余锰 炉后直上 

分 类 号：TF713[冶金工程—钢铁冶金]