Physical model of fluid flow characteristics in RH-TOP vacuum refining process

Lu Lin, Yan-ping Bao, Feng Yue, Li-qiang Zhang, Hong-lin Ou

分享

计量
  • 文章访问数:  293
  • HTML全文浏览量:  72
  • PDF下载量:  10
  • 被引次数: 0

目录

HTML全文
    资源附件(0)
    相关文章
    施引文献

    Cite this article as:

    Lu Lin, Yan-ping Bao, Feng Yue, Li-qiang Zhang, and Hong-lin Ou, Physical model of fluid flow characteristics in RH-TOP vacuum refining process, Int. J. Miner. Metall. Mater., 19(2012), No. 6, pp.483-489. https://dx.doi.org/10.1007/s12613-012-0584-4
    Lu Lin, Yan-ping Bao, Feng Yue, Li-qiang Zhang, and Hong-lin Ou, Physical model of fluid flow characteristics in RH-TOP vacuum refining process, Int. J. Miner. Metall. Mater., 19(2012), No. 6, pp.483-489. https://dx.doi.org/10.1007/s12613-012-0584-4
    shu
    引用本文 PDF XML SpringerLink

    Physical model of fluid flow characteristics in RH-TOP vacuum refining process

    • State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China

    • Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083, China

      通信作者:

      Yan-ping Bao E-mail: baoyp@ustb.edu.cn

    中文摘要

    To understand the characteristic of circulation flow rate in 250-t RH-TOP vacuum refining process, the l:4 water model test was established through the bubble behavior and gas holdup in the up-leg to investigate the effects of different processes and equipment parameters on the RH circulation flow rate. With the increases of lifting gas flow rate, lifting bubble travel, and the internal diameter of the up-leg, and the decrease of nozzle diameter, the work done by bubble floatage and the circulation flow rate increase. The expression of circulation flow rate was derived from the regression analysis of experiment data. Meanwhile, the influences of vacuum chamber pressure and nozzle blockage situation on the circulation flow rate were discussed in detail by the bubble behavior and gas holdup in the up-leg. It is necessary to maintain a certain vacuum chamber liquid level in the molten steel circulation flow. Compared with a nozzle with symmetrical blockage in the up-leg, when a nozzle with non-symmetrical blockage is applied, the lifting gas distribution is non-uniform, causing a great effect on the molten steel circulation flow and making the circulation flow drop largely.

     

    Physical model of fluid flow characteristics in RH-TOP vacuum refining process

    Author Affilications

      • State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China

      • Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083, China

    • Received: 24 June 2011; Revised: 10 July 2011; Accepted: 22 July 2011;
    To understand the characteristic of circulation flow rate in 250-t RH-TOP vacuum refining process, the l:4 water model test was established through the bubble behavior and gas holdup in the up-leg to investigate the effects of different processes and equipment parameters on the RH circulation flow rate. With the increases of lifting gas flow rate, lifting bubble travel, and the internal diameter of the up-leg, and the decrease of nozzle diameter, the work done by bubble floatage and the circulation flow rate increase. The expression of circulation flow rate was derived from the regression analysis of experiment data. Meanwhile, the influences of vacuum chamber pressure and nozzle blockage situation on the circulation flow rate were discussed in detail by the bubble behavior and gas holdup in the up-leg. It is necessary to maintain a certain vacuum chamber liquid level in the molten steel circulation flow. Compared with a nozzle with symmetrical blockage in the up-leg, when a nozzle with non-symmetrical blockage is applied, the lifting gas distribution is non-uniform, causing a great effect on the molten steel circulation flow and making the circulation flow drop largely.

     

      HTML全文
      • 资源附件(0)
      • 相关文章
      施引文献

    Relative Articles

    Int. J. Miner. Metall. Mater., 2017, 24(9): 999-1003.

    PDF View details

    Liang Zhao, Qun-hu Xue. Effects of temperature-gradient-induced damage of zirconia metering nozzles [J]. 矿物冶金与材料学报（英文版）. DOI: 10.1007/s12613-017-1488-0

    View details

    Int. J. Miner. Metall. Mater., 2016, 23(9): 1041-1047.

    PDF View details

    Liang Zhao, Qun-hu Xue, Dong-hai Ding. Effects of the precipitation of stabilizers on the mechanism of grain fracturing in a zirconia metering nozzle [J]. 矿物冶金与材料学报（英文版）. DOI: 10.1007/s12613-016-1321-1

    View details

    Int. J. Miner. Metall. Mater., 2016, 23(5): 511-519.

    PDF View details

    Xiang Li, Yan-ping Bao, Min Wang, Lu Lin. Simulation study on factors influencing the entrainment behavior of liquid steel as bubbles pass through the steel/slag interface [J]. 矿物冶金与材料学报（英文版）. DOI: 10.1007/s12613-016-1262-8

    View details

    Int. J. Miner. Metall. Mater., 2011, 18(2): 144-149.

    PDF View details

    Fu-ping Tang, Zhen Li, Xiao-feng Wang, Ben-wen Chen, Peng Fei. Cleaning IF molten steel with dispersed in-situ heterophases induced by the composite sphere explosive reaction in RH ladles [J]. 矿物冶金与材料学报（英文版）. DOI: 10.1007/s12613-011-0414-0

    View details

    Int. J. Miner. Metall. Mater., 2010, 17(2): 154-158.

    PDF View details

    Heng Cui, Yan-ping Bao, Min Wang, Wei-shuang Wu. Clogging behavior of submerged entry nozzles for Ti-bearing IF steel [J]. 矿物冶金与材料学报（英文版）. DOI: 10.1007/s12613-010-0206-y

    View details

    Int. J. Miner. Metall. Mater., 2008, 15(3): 227-235.

    PDF View details

    Fangming Yuan, Xinghua Wang, Jiongming Zhang, Li Zhang. Numerical simulation of Al203 deposition at a nozzle during continuous casting [J]. 矿物冶金与材料学报（英文版）. DOI: 10.1016/S1005-8850(08)60043-2

    View details

    Int. J. Miner. Metall. Mater., 2006, 13(1): 21-24.

    PDF View details

    Fangming Yuan, Xinghua Wang, Jiongming Zhang, Li Zhang. Online forecasting model of tundish nozzle clogging [J]. 矿物冶金与材料学报（英文版）. DOI: 10.1016/S1005-8850(06)60007-8

    View details

    Int. J. Miner. Metall. Mater., 2005, 12(4): 303-307.

    PDF View details

    Huixiang Yu, Guosen Zhu, Xinhua Wang, Jiongming Zhang, Wanjun Wang. Influence of submerged entry nozzle clogging on the behavior of molten steel in continuously cast slab molds [J]. 矿物冶金与材料学报（英文版）.

    View details

    Int. J. Miner. Metall. Mater., 2003, 10(4): 20-23.

    PDF View details

    Yanping Bao, Jianhua Liu, Baomei Xu. Behaviors of fine bubbles in the shroud nozzle of ladle and tundish [J]. 矿物冶金与材料学报（英文版）.

    View details

    Int. J. Miner. Metall. Mater., 1999, 6(3): 183-186.

    PDF View details

    Yanping Bao, Jianqiang Zhu, Wei Jiang, Naiyuan Tian, Baomei Xu. Development of a New Subermerged Entry Nozzle in Thin Slab Caster [J]. 矿物冶金与材料学报（英文版）.

    View details

    /

    返回文章
    返回

    版权所有 © 《矿物冶金与材料学报（英文）》编辑部

    地址: 北京市海淀区学院路30号邮政编码: 100083

    电子邮箱：journal@ustb.edu.cn电话：+86-10-62332875

    本系统由北京仁和汇智信息技术有限公司开发      百度统计