炼钢 ›› 2019, Vol. 35 ›› Issue (6): 6-11.

• 转炉及电炉冶炼 • 上一篇    下一篇

新型旋流氧枪喷头在120 t转炉中的应用与实践

薛 志   

  1. (莱钢集团 银山型钢炼钢厂,山东 济南 271104)
  • 接受日期:1900-01-01 出版日期:2019-12-05

Application and practice of new swirl oxygen lance nozzle in 120 t converter

  • Accepted:1900-01-01 Online:2019-12-05

摘要: 莱钢集团银山型钢炼钢厂针对旋流氧枪喷头的设计、应用,通过“实验室试验+工业试验”相结合的方式,经过3年的不懈努力,解决了制约旋流氧枪喷头推广的一系列问题,形成一套完整的解决旋流氧枪喷头推广应用技术难题的关键集成技术,包括旋流氧枪喷头参数设计流程、旋流角度选择标准、气体模拟试验数据分析方法、旋流氧枪喷头参数优化途径、旋流氧枪喷头自动炼钢控制模型、溅渣优化模式等。通过制定了一套科学、完整、严谨的使用规范,使旋流氧枪喷头在120、150 t转炉上得到推广应用,吹炼起渣时间较正常枪头提前30~40 s,整体吹炼时间可缩短40~60 s,转炉消耗明显降低,平均枪龄达到300炉以上,炉龄5 300炉时底吹透气效果依然较好,进一步验证了旋流氧枪喷头良好的化渣效果、溅渣效果,具有良好的推广前景。

关键词: 旋流氧枪, 转炉, 旋流角, 控制模式

Abstract: Aiming at the design and application of swirling oxygen lance nozzle in Yinshan steelmaking plant of Laiwu Iron and Steel Group,a series of problems restricting the promotion of swirling oxygen lance nozzle have been solved through the combination of laboratory test and industrial test for three years,and a complete set of technical problems for the popularization and application of swirling oxygen lance nozzle has been formed.Key integration technologies include design process of swirl oxygen lance nozzle parameters,selection criteria of swirl angle,data analysis method of gas simulation test,optimization approach of swirl oxygen lance nozzle parameters,automatic steelmaking control model of swirl oxygen lance nozzle,slag splashing optimization model,etc.By formulating a set of scientific,complete and rigorous operational specifications,the swirling oxygen lance nozzles have been popularized and applied in 120 t and 150 t converters.The slag blowing time is 30-40 s earlier than that of the normal lance nozzles,the overall blowing time can be shortened by 40-60 s,the average lance life is over 300 heats,and the bottom blowing effect is still good when 5 300 heats are in operation.The good slagging effect and slag splashing effect of the swirling oxygen lance nozzle are verified,and it has a good popularization prospect.

Key words: swirl oxygen lance, converter, swirl angle, control mode