中间包结构对钢液流动及夹杂物去除的数值模拟研究

炼钢 ›› 2023, Vol. 39 ›› Issue (2): 42-48.

中间包结构对钢液流动及夹杂物去除的数值模拟研究

李中华1，田伟1，吴飞鹏1，陈宏亮2，陈威2，王新东3，张立峰4

（1.河钢集团唐钢公司，河北唐山 063600；
2.燕山大学机械工程学院，河北秦皇岛 066044；
3.河钢集团有限公司，河北石家庄 050023；
4.北方工业大学机械与材料工程学院，北京 100144

出版日期:2023-04-05 发布日期:2023-04-06

Numerical simulation of the effect of tundish structure on steel fluid flow and inclusion removal

Online:2023-04-05 Published:2023-04-06

摘要/Abstract

摘要： 依据河钢集团唐钢新区72 t中间包建立三维数值模型，讨论对比了不同中间包结构包括湍流抑制器、挡墙和挡坝对钢液液位波动、速度分布、停留时间以及夹杂物上浮去除的影响。钢液湍流运动通过求解Realizable k-ε模型实现，钢液停留时间通过求解浓度标量方程（User-Defined Scalar, UDS）实现，夹杂物上浮去除则通过求解离散相模型（Discrete Phase Model，DPM）得到。结果表明，带檐湍流抑制器和开口湍流抑制器下中间包上水口附近的液面波动较大，是不设置湍流抑制器的情况的3～4倍；而带挡板湍流抑制器下钢液在挡板之间形成循环流动，液位波动较小，甚至小于无湍流抑制器的情况；中间包内挡墙和挡坝同时存在时增加了钢液在中间包的移动距离，有利于夹杂物的上浮去除；在目前条件下，挡墙和挡坝分别距离中间包宽度中心1 060 mm和2 000 mm时钢液平均停留时间较长以及夹杂物上浮去除率较高。

关键词: 液位波动, 湍流抑制器, 挡墙和挡坝, 停留时间, 中间包

Abstract: A three-dimensional numerical model of a 72 t tundish in HBIS Group Tangsteel New District was established to investigate and compare the effect of different tundish structures on the steel level fluctuation, velocity distribution, residence time, and inclusion removal, including the turbulence inhibitor, weir and dam. The turbulence movement of the molten steel was calculated using the Realizable k-ε model. The residence time of molten steel was achieved by solving a concentration scalar equation (User-Defined Scalar, UDS), and the floating and removal of inclusions was obtained by solving the Discrete Phase Model (DPM). The results show that the level fluctuation near the upper nozzle of the tundish under the turbulence inhibitor with eaves and the opening turbulence inhibitor fluctuated greatly, which was about 3～4 times of that without the turbulence inhibitor. However, with the turbulence inhibitor with baffles, the molten steel formed a circulating flow between the baffles and the fluctuation of the liquid level was small, even smaller than the situation without the turbulence inhibitor. The moving distance of the molten steel in the tundish was increased when the weir and dam in the tundish existed at the same time, which was conducive to the floating and removal of inclusions. Under the current conditions, the average residence time of molten steel was longer and the removal rate of inclusions floating was higher when the weir and the dam were 1 060 mm and 2 000 mm from the width center of the tundish.

Key words: level fluctuation, turbulence inhibitor, weir and dam, residence time, tundish

李中华, 田伟, 吴飞鹏, 陈宏亮, 陈威, 王新东, 张立峰. 中间包结构对钢液流动及夹杂物去除的数值模拟研究[J]. 炼钢, 2023, 39(2): 42-48.

[1]	凌海涛, 吴锦圆, 王海军, 常立忠, 仇圣桃. 超低碳钢连铸过程中间包覆盖剂结壳机理研究[J]. 炼钢, 2023, 39(2): 36-41.
[2]	陈兴润, 马国财, 魏维岗, 胡桓彰, 刘斌, 潘吉祥. 高硅含钛奥氏体不锈钢“结晶器结鱼”分析及改进[J]. 炼钢, 2023, 39(2): 49-55.
[3]	常茜萱, 谭憧, 刘畅, 肖爱达, 王强, 李光强, . 板坯连铸中间包内控流装置优化的物理和数值模拟[J]. 炼钢, 2022, 38(6): 29-37.
[4]	钟巍, 徐蕊, 王海军, 仇圣桃. 换包过程中连铸中间包内多相流动行为研究[J]. 炼钢, 2022, 38(4): 63-70.
[5]	余慧, 史志鹏, 王红国, 窦为学, 曾岳飞. 双通道式电磁感应加热中间包冶金效果研究[J]. 炼钢, 2022, 38(3): 37-42.
[6]	徐海强, 曾岳飞, 谢力, 陈晓东, 郭士萌. 敬业钢铁通道式电磁感应加热中间包生产实践 [J]. 炼钢, 2021, 37(5): 41-45.
[7]	李尚兵, 陈远清, 黄建军, 耿恒亮, 李占春, 汪德伟 . 镁质干式料中间包烘烤工艺改善实践[J]. 炼钢, 2021, 37(5): 46-49.
[8]	郑瑞轩, 赵立华, 姚骋, 李新, 华承健, 包燕平. 四流中间包流场影响因素分析与优化[J]. 炼钢, 2021, 37(1): 63-72.
[9]	卢金霖, 张东升, 罗志国, 邹宗树. 旋流中间包夹杂物聚合行为的数值模拟[J]. 炼钢, 2020, 36(5): 37-43.
[10]	蒲雪峰, 刘勇, 杜英杰, 周小宾, 范鼎东, . 异型中间包数值模拟优化研究[J]. 炼钢, 2020, 36(4): 48-53.
[11]	蒋有洪, 唐萍, 秦鹏鹏. 湍流控制器内腔形状对四流长间距中间包流场影响的研究[J]. 炼钢, 2020, 36(4): 54-59.
[12]	蔡亦凡1，孙彦辉1，杨文中2，黎建全2，陈天明3，李志强3. 变径通道在八字型感应加热中间包中的应用[J]. 炼钢, 2020, 36(2): 42-47.
[13]	邹涛1，康旭1，屈乐欣1，战东平1，张慧书2，姜周华1. 单流中间包控流装置优化的水模型试验与应用[J]. 炼钢, 2019, 35(5): 43-49.
[14]	曾成1，郑万1，2，曹方1，李天佑1，张战1，2，王春锋3. 钢包喂线工艺中钙包芯线熔化位置优化[J]. 炼钢, 2019, 35(3): 21-26.
[15]	邢飞，郑淑国，朱苗勇. 通道倾角对感应加热中间包影响的数值模拟[J]. 炼钢, 2019, 35(3): 27-33.