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Invited Review

Review on Desulfurization in Electroslag Remelting (ESR)

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  • Received: 28 February 2020Revised: 20 April 2020Accepted: 21 April 2020Available online: 24 April 2020
  • Electroslag remelting (ESR) combines liquid metal refining and solidification structure control in one set. Desulfurization is one of the typical aspects of liquid metal refining during ESR for producing advanced steel and alloy. It involves two patterns, i.e., slag-metal reactions and gas-slag reactions (gasifying desulfurization). This paper reviews the advances in the desulfurization practices of ESR. The effects of processing parameters including the initial sulfur level of consumable electrode, remelting atmosphere, deoxidation schemes of ESR, slag composition, melting rate and electrical parameters on the desulfurization during the ESR are assessed. The interrelation between the desulfurization and the sulfide inclusion evolution during ESR is discussed. The current state of the art in the production of sulfur-bearing steel at a high sulfur level during ESR is also reviewed. The remaining challenges for future work are proposed and discussed in this article.
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Review on Desulfurization in Electroslag Remelting (ESR)

  • Corresponding author:

    Cheng-bin Shi    E-mail: chengbin.shi@ustb.edu.cn

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

Abstract: Electroslag remelting (ESR) combines liquid metal refining and solidification structure control in one set. Desulfurization is one of the typical aspects of liquid metal refining during ESR for producing advanced steel and alloy. It involves two patterns, i.e., slag-metal reactions and gas-slag reactions (gasifying desulfurization). This paper reviews the advances in the desulfurization practices of ESR. The effects of processing parameters including the initial sulfur level of consumable electrode, remelting atmosphere, deoxidation schemes of ESR, slag composition, melting rate and electrical parameters on the desulfurization during the ESR are assessed. The interrelation between the desulfurization and the sulfide inclusion evolution during ESR is discussed. The current state of the art in the production of sulfur-bearing steel at a high sulfur level during ESR is also reviewed. The remaining challenges for future work are proposed and discussed in this article.

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