RH精炼钢包底吹工艺优化物理模拟研究  

Physical simulation study on optimization of bottom blowing process in RH refining ladle

作　　者：庞佳佳 包燕平 华承健 孙宇秋 杨健[2] PANG Jiajia;BAO Yanping;HUA Chengjian;SUN Yuqiu;YANG Jian(State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China;State Key Laboratory ofAdvanced Special Steel,Shanghai University,Shanghai 200444,China)

机构地区：[1]北京科技大学钢铁冶金新技术国家重点实验室,北京100083 [2]上海大学省部共建高品质特殊钢冶金与制备国家重点实验室,上海200444

出　　处：《炼钢》2022年第4期47-53,共7页Steelmaking

基　　金：国家自然科学基金资助项目(51874021)。

摘　　要：为提高RH精炼效率,针对某钢厂120 t RH精炼装置进行了RH精炼钢包底吹位置以及流量对精炼效果影响的物理模拟研究。首先根据原型的水模拟确定了较为合适的工艺参数,其中提升气体流量为1408 L/min、浸渍管深度为540 mm。然后该研究相对于上升管以及下降管的位置设置了3种不同底吹孔的位置,其分别为单孔在上升管的正下方、双孔连线与上升管和下降管的连线垂直以及平行,通过混匀时间、循环流量及流场速度3个指标研究发现,添加底吹时单孔的精炼效果较双孔的好,双孔垂直位置较平行位置精炼效果好,故建议采用单孔底吹工艺。In order to improve the RH refining efficiency,the physical simulation research on the bottom blowing position and flow of RH refining ladle were carried out for the 120 t RH refining unit of a steel plant.Firstly,the more appropriate process parameters were determined,the lifting gas flow was 1408 L/min and the depth of impregnation tube was 540 mm.Then,three different positions of bottom blowing holes were set relative to the positions of the riser and the down comer,which were that the single hole was directly below the riser,and the connecting line between the double hole and the riser and the downcomer was vertical and parallel.Through the study of three indexes of mixing time,circulating flow and flow velocity,it was found that the refining effect of the single hole was better than that of the double hole,the refining effect of double hole vertical position was better than that of parallel position,so it was recommended to adopt single hole bottom blowing process.

关 键 词：RH精炼 底吹 物理模拟 混匀时间 循环流量 流场速度 

分 类 号：TF769.4[冶金工程—钢铁冶金]