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Structural optimization and design of purging plug for improving its service performance

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Abstract

Purging plug with slits is widely used in the secondary refining process, and its service life determines the downtime and production efficiency. To achieve a good performance in service life, optimizing the geometric structure of the slit, which can alleviate the stress concentration around the slit, was employed using the finite plate model. Furthermore, the performance of the purging plugs with different shapes of slits in the refining effect was investigated by conducting the water model experiments. The numerical simulation results showed that the appropriate shapes of slits could alleviate the stress concentration phenomena. In the water model experiment, the mixing time of the purging plug with circular slits is lesser than that of the purging plug with rectangular slits when the gas flow is less than 6.02 L/min. Compared with the rectangular slits, the circular slits are detrimental to smaller and well-distributed bubbles. Thus, the inclusion removal rate of the purging plug with circular slits is approximately 10% larger than that of the purging plug with the rectangular slits.

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 51974211 and 12072245) and the Special Project of Central Government for Local Science and Technology Development of Hubei Province (Grant Nos. 2019ZYYD003 and 2019ZYYD076).

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Authors and Affiliations

  1. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, Hubei, China

    Fang-guan Tan, Zhu He & Ya-wei Li

  2. National-Provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology, Wuhan University of Science and Technology, Wuhan, 430081, Hubei, China

    Fang-guan Tan, Zhu He & Ya-wei Li

  3. Chair of Ceramics, Montanuniversitaet Leoben, Leoben, 8700, Austria

    Sheng-li Jin

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  1. Fang-guan Tan
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  2. Sheng-li Jin
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Correspondence to Zhu He.

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Tan, Fg., Jin, Sl., He, Z. et al. Structural optimization and design of purging plug for improving its service performance. J. Iron Steel Res. Int. 29, 628–635 (2022). https://doi.org/10.1007/s42243-021-00647-6

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  • DOI: https://doi.org/10.1007/s42243-021-00647-6

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