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<p>The self-baking electrode is a core component of the submerged arc furnace. However, its baking state is difficult to assess, leading to frequent electrode accidents during the production process. To address this issue, this work first developed an electromagnetic–thermal coupling model for the self-baking electrode baking process considering electrode slipping. The model was used to calculate, in real time, the electromagnetic field and temperature field of the electrode during production and reasonably control the electrode slipping time. The model control equations were discretized by the finite volume method and solved by the Python code written. In addition, this work investigated the baking characteristics of electrode through on-site test. The numerical simulation results show that the electrode temperature rises sharply from approximately 200&#xa0;°C to about 800&#xa0;°C within the contact clamps. The time required for the electrode to complete baking increases with the increase of the slipping distance and the decrease of the electrode current. The experimental results indicate that the electrode starts to enter the sintering state at 214 mm above the lower edge of the contact clamps. The validity of the model is verified. The research findings contribute to advancing the transition of electrode baking from empirical control to digital control.</p>

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Effect of Slipping on the Baking Characteristics of Self-Baking Electrode in the Submerged Arc Furnace

  • 期刊论文

  • 发表日期：

    2025年12月29日

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  • Shuo Wang,
  • Bao-Kuan Li,
  • Jian-Xiang Xu,
  • Xiao-Qing Tang,
  • Yang Yu,
  • Zhong-Qiu Liu

摘要

The self-baking electrode is a core component of the submerged arc furnace. However, its baking state is difficult to assess, leading to frequent electrode accidents during the production process. To address this issue, this work first developed an electromagnetic–thermal coupling model for the self-baking electrode baking process considering electrode slipping. The model was used to calculate, in real time, the electromagnetic field and temperature field of the electrode during production and reasonably control the electrode slipping time. The model control equations were discretized by the finite volume method and solved by the Python code written. In addition, this work investigated the baking characteristics of electrode through on-site test. The numerical simulation results show that the electrode temperature rises sharply from approximately 200 °C to about 800 °C within the contact clamps. The time required for the electrode to complete baking increases with the increase of the slipping distance and the decrease of the electrode current. The experimental results indicate that the electrode starts to enter the sintering state at 214 mm above the lower edge of the contact clamps. The validity of the model is verified. The research findings contribute to advancing the transition of electrode baking from empirical control to digital control.