转炉应用CO_2技术  

Application of CO_2 in BOF

作　　者：万雪峰 曹东 刘祥 朱晓雷 廖相巍 

机构地区：[1]鞍钢集团钢铁研究院,辽宁鞍山114009

出　　处：《钢铁》2015年第5期30-33,共4页Iron and Steel

摘　　要：通过对转炉顶吹CO2的热力学分析，结合实验室模拟转炉顶吹O2＋CO2混合气体试验结果，确立了CO2在转炉中应用的关键参数。得出在转炉中顶吹纯CO2虽可脱碳，但温降较大，顶吹CO2供气强度为3.0 m3/（t·min）时，钢液温降速率为15.1℃/min；通过喷吹O2＋CO2混合气体可实现温度平衡，但CO2配比的最大理论比例为79.1%；随着混合气体中CO2比例增大，吹炼终点钢液碳氧积降低，当φ（CO2）∶φ（O2）＝1∶1时可控碳氧积为（25～32）×10－8。By the thermodynamic analysis of top blowing CO2 in the converter,combined with laboratory simulation re-sult of top blowing O2＋CO2 mixture gas in converter,some key parameters of CO2 used in converter were established. It is concluded that although pure CO2 injected in the converter could achieve decarburize,the drop of temperature was rath-er large. When the CO2 supplying intensity was 3.0 m3/（t·min）,the reduction of temperature was 15.1℃/min;By blow-ing O2＋CO2 mixture gas,temperature balance could be realized,but the largest theoretical proportion of CO2 in mixture gas was 79.1%;with the increase of CO2 proportion,the carbon and oxygen product of molten steel at the blowing end was reduced,under the condition of φ（CO2）∶φ（O2）=1∶1,the carbon and oxygen product could be controlled in the range of （25-32）×10-8.

关 键 词：CO2 转炉 混合喷吹 碳氧积 

分 类 号：TF713[冶金工程—钢铁冶金]