北营炼钢厂对称T型六流中间包控流结构优化及其应用  

Optimization and Application of Flow-control Device in the Symmetrical T-type Six-strand Tundish of Beiying Steelmaking Plant

作　　者：余珊 陈韧[1,2] 富强 刘真海 孙野 姚德福[3] YU Shan;CHEN Ren;FU Qiang;LIU Zhenhai;SUN Ye;YAO Defu(School of Metallurgy and Materials Engineering,Liaoning Institute of Science and Technology,Benxi Liaoning 117004,China;Liaoning Key Laboratory of Optimization and Utilization of Non-associated Low-grade Iron Ore,Benxi Liaoning 117004,China;Bensteel Beiying Steelmaking Plant of Ansteel Group,Benxi Liaoning 117004,China)

机构地区：[1]辽宁科技学院冶金与材料工程学院,辽宁本溪117004 [2]辽宁省低品位非伴生铁矿优化应用重点实验室,辽宁本溪117004 [3]鞍钢集团本钢北营炼钢厂,辽宁本溪117004

出　　处：《辽宁科技学院学报》2024年第6期10-14,共5页Journal of Liaoning Institute of Science and Technology

基　　金：辽宁省教育厅2022年服务地方项目(LJKFZ20220280)。

摘　　要：北营炼钢厂对称T型六流中间包在生产过程中出现水口结壳、各流成分和温度均匀性差、夹杂物含量高等问题,严重影响铸坯质量和降低生产效率。文章建立了该中间包内钢水流动和传热的数值和物理模型,对控流结构的设计进行优化,旨在改善钢水流动特性和温度分布,进而提高中间包各流均匀性和降低钢水夹杂物含量,最终实现高效低成本洁净钢冶炼。研究结果表明,利用八字形四孔挡墙分割冲击槽和中间包主体的控流结构,可有效降低中间包内死区体积,延长钢水停留时间,降低各流钢水温度偏差和促进夹杂物上浮去除。同时,利用优化的控流结构进行的工业试验也取得了预期的良好效果。During production at the Beiying steelmaking plant,the symmetrical T-type six-strand tundish encounters issues such as nozzle clogging,poor uniformity of liquid steel compositions and temperatures at the six strands,and a high amount of inclu⁃sions,which severely affects the quality of the billets and reduces production efficiency.In this paper,numerical and physical models of liquid steel flow and heat transfer within the tundish were respectively established,and the flow-control structure was optimized to improve the flow characteristics and temperature distribution.The ultimate goal was to enhance the uniformity of liq⁃uid steel compositions and temperatures at the six strands,and to reduce the amount of inclusions,finally achieving high-efficiency and low-cost production of clean steel.The results showed that using a flow-control structure with an inverse-V-shaped four-hole baffle to separate the impact zone from the main body of the tundish can effectively reduce the volume of dead zone,pro⁃long the residence time of liquid steel,reduce the temperature deviation among the strands,and promote the flotation and removal of inclusions.Industrial trials with the optimized flow-control structure also achieved the expected positive results.

关 键 词：中间包 数值模拟 物理模拟 控流结构优化 停留时间 

分 类 号：TF704.6[冶金工程—钢铁冶金]