MgO对包钢高炉渣流变特性及熔化性影响的实验研究  

Experimental Study on Effects of MgO on Rheological and Melting Properties of Blast Furnace Slag of Baotou Steel

作　　者：冯聪 李玉柱[1] 白晓光[1] 郑占斌[2] 于恒亮 卢俊慧 Feng Cong;Li Yu-zhu;Bai Xiao-guang;Zheng Zhan-bin;Yu Heng-liang;Lu Jun-hui(Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;Iron-making Plant of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010 [2]内蒙古包钢钢联股份有限公司炼铁厂,内蒙古包头014010

出　　处：《包钢科技》2024年第3期14-21,共8页Science & Technology of Baotou Steel

摘　　要：基于包钢高炉炼铁生产原燃料条件,在实验室条件下以包钢4#高炉渣为基础,采用纯化学试剂配制渣样,在N_(2)气氛下分析了MgO对包钢高炉渣流变特性的影响。同时,探索了MgO对包钢高炉渣熔化性能和热焓的影响。结果表明,实验条件下,炉渣MgO含量由8.00%升高至13.00%,包钢高炉渣熔化性温度呈升高趋势,黏度和黏流活化能呈先降低后升高的趋势,炉渣流动性和热稳定性先变好后变差。另外,随炉渣MgO含量升高,包钢高炉渣熔化性能特征温度呈先降低后升高趋势,炉渣热焓呈升高趋势,表明炉渣在高炉炉缸蓄热能力增强。综合考虑实验研究结果、相关理论计算及包钢现有高炉炉渣MgO含量控制水平,建议包钢高炉渣MgO含量控制为10.00%。The effects of MgO on rheological property of blast furnace slag of Baotou Steel are analyzed by preparing slag specimen with pure chemical reagent under N_(2)atmosphere based on the 4^(#)blast furnace slag of Baotou Steel under laboratory conditions and crude fuel conditions of blast furnace ironmaking production of Baotou Steel.Moreover,the effects of MgO on melting property and enthalpy of blast furnace slag of Baotou Steel are also explored.The results showed that the MgO content of slag was increased from 8.00%to 13.00%,melting temperature of blast furnace slag of Baotou Steel was on the rise,viscosity and viscous flow activation energy showed a trend of first decreasing and then increasing,fluidity and thermal stability of slag became first good and then poor under experimental conditions.In addition,the characteristic temperature of melting property for blast furnace slag of Baotou Steel shows a trend of first decreasing and then increasing as well as enthalpy of slag shows a trend of increasing with the increase of MgO content of slags,which show that the heat storage capacity of slag in blast furnace hearth is enhanced.The MgO content of blast furnace slag of Baotou Steel is suggested to be controlled at 10.00%by comprehensively considering the experimental study results,relevant theoretical calculations and control level of MgO content of existing blast furnace slag of Baotou Steel.

关 键 词：白云鄂博矿 高炉渣 MGO 流变特性 熔化性 

分 类 号：TF534.1[冶金工程—钢铁冶金]