高效长寿复合吹炼技术在小转炉上及应用.pdfVIP

高效长寿复合吹炼技术在小转炉上的应用 1,3 1 2 3 3 1 李 勇 娄文涛 吴 伟 朱启柱 陈 涛 朱苗勇 （1．东北大学材料与冶金学院，沈阳 110004 ；2. 钢铁研究总院，北京 100081 ； 3. 抚顺新钢铁有限责任公司，抚顺 113001 ） 摘 要 结合抚顺新钢铁公司转炉顶底复合吹炼改造的具体实践过程，本文对小型转炉复合吹炼高效长寿技术积极 探索，对底吹供气元件布置进行优化设计；并对复合吹炼、纯顶吹工艺冶炼终点[C][O]积、炉渣组元构成、岩相以 及成品钢材中夹杂物含量进行了分析研究；对改造后冶炼生产过程中出现的问题及采取的措施进行探索，对转炉中 对限制炉役寿命的瓶颈问题进行了大胆攻关尝试，取得了突破成果。 关键词 复合吹炼 高效长寿 [C][O]积 夹杂物 The Application of High Efficiency and Long Lifetime Combined Blowing Technology in Small-Scale Converter Li Yong1,3 Lou Wentao1 Wu Wei2 Zhu Qizhu3 Chen Tao3 Zhu Miaoyong1 (1. School of Materials and Metallurgy, Northeastern University, Shenyang, 110004; 2. Central Iron and Steel Research Institute, Beijing, 100081; 3. Fushun New Steel, Fushun, 113001) Abstract By taking into account the top and bottom combined blowing converter reconstruction process in Fushun New Steel Company, the technology of high efficient and long lifetime for small-scale top and bottom combined blowing converter was developed. The layout of bottom gas permeable element for 50t combined blowing converter was optimized through the water model and numerical simulation. Comparing pre and post reconstruction, the difference of the smelting end [C] and [O] plot，slag composition and petrographic, and inclusion content in the finished steel between combined blowing and pure top blowing was investigated. The problems which were found in the production process after reconstruction and the respondent measures taken were discussed. At the same time, the bottleneck problem which affect the life of furnace battle was attempted to solve, and a breakthrough result was achived. Key words