转炉高效冶炼工艺技术的研究和开发  

Research and development of converter high efficiency smelting technology

作　　者：富强 刘真海 姚志龙 孙才权 曹连平 FU Qiang;LIU Zhenhai;YAO Zhilong;SUN Caiquan;CAO Lianping(Beiying Steel Plant,Benxi Steel Group,Benxi 117017,China)

机构地区：[1]本钢集团北营炼钢厂,辽宁本溪117017

出　　处：《炼钢》2024年第5期44-48,共5页Steelmaking

摘　　要：通过研究炉渣渣系及炉内反应动力学,实施留渣及全留渣工艺达50%以上,优化了炉渣渣组元浓度(如MgO、R)、加料方式等,形成了具有“快速成渣、维持低熔点及良好流动性”的全新加料操作模式。结果表明:采用少渣冶炼工艺后炉渣碱度2.80,石灰单耗降低了13.48%,脱磷率提升2.02百分点;冶炼过程炉渣“喷溅”、“返干”频次明显减少,供氧时间缩短(降低氧耗),该工艺具有可观的降成本潜力,具备广泛的推广价值。By studying the slag system and the kinetics of reactions inside the furnace,the implementation of slag retention and full slag retention processes exceeding 50%has been achieved.The concentration of slag components(such as MgO,R),slag-former addition methods,etc.,have been optimized,forming a new addition operation mode with“rapid slag formation,maintaining low melting point,and good fluidity”.The implementation results show that after adopting the low-slag-amount smelting process,the basicity of the end-point slag in the furnace reaches 2.80,lime consumption per ton is reduced by 13.48%,and the desulphurization rate is increased by 2.02 percentage points.During the smelting process,the occurrences of“splashing”and“dry return”of slag are significantly reduced,oxygen supply time is shortened(reducing oxygen consumption),and this process has considerable cost reduction potential and broad promotion value.

关 键 词：转炉炼钢 少渣冶炼 脱磷效果 节能降耗 

分 类 号：TF713[冶金工程—钢铁冶金]