铁水预处理中钛硅锰同时脱除规律及工艺  

Removal behavior and technics of simultaneous desiliconization and removing manganese and titanium in hot metal

作　　者：李闯[1] 郭汉杰[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083

出　　处：《北京科技大学学报》2009年第S1期88-91,共4页Journal of University of Science and Technology Beijing

摘　　要：通过钼丝炉上1kg铁水和感应炉上10kg铁水的实验,研究了铁水预处理时炉渣碱度和铁水温度对脱钛硅锰的影响,并系统的分析了其脱出规律.研究表明铁水中钛硅的氧化基本不受铁水温度和炉渣碱度的影响,锰的氧化受铁水温度和炉渣碱度的影响较大,低温、低碱度有利于铁水脱锰.当铁水温度T=1280℃,碱度R=0.44,铁水中钛硅锰可分别脱除至[Si]=0.011%,[Ti]<0.005%,[Mn]=0.024%,满足了高纯生铁对锰的指标要求.Based on the test of 1 kg molten iron in molybdenum-wound furnace and 10 kg molten iron in induction furnace,the influences of slag basicity,temperature of molten iron on simultaneous desiliconization and removing Mn and Ti were studied,and the removal behavior was systemically analyzed. The results show that the temperature of molten iron and the slag basicity do not contribute to desiliconisation and removal of Ti in molten iron,but affect demanganization very much,lower temperature and lower slag basicity are available to demanganization. When the hot metal temperature T=1 280 ℃ and the slag basicity R=0.44,the final content of [Si],[Ti] and [Mn] can reach 0.011%,less than 0.005%,and 0.024%,respectively,which meet the requirement of Mn content in high-pure pig iron.

关 键 词：铁水预处理 脱硅 脱钛 脱锰 

分 类 号：TF704.3[冶金工程—钢铁冶金]