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A reasonable aluminum fluoride additionAluminum fluoride addition is not only necessary for sustaining the electrolyte compositionElectrolyte composition but also key to achieving favorable technical indicators. This paper analyzed the intrinsic relationships among cell control data, raw material inspection data, and field measurementMeasurements data. Based on production practices, factors influencing aluminum fluoride additionAluminum fluoride addition were investigated and quantitatively analyzed. This led to the development of a determination method for aluminum fluoride additionAluminum fluoride addition, which substantially enhanced the qualification rate and consistency of the bath ratioBath ratio. The proposed method was applied to adjust aluminum fluoride additionAluminum fluoride addition in a 200 kA potline. After the adjustment the qualification rate and distribution concentration of the bath ratioBath ratio significantly improved; the bath ratioBath ratio gradually decreased from 2.28–2.32 to 2.20–2.25 over six months; cell stabilityCell stability was enhanced and current efficiency increased from approximately 91.0–91.5% to 92.5–93.0%. This provides a reliable guarantee for the efficient and low-consumption operation of the electrolysis cellsElectrolysis cell.

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Determination Method for Aluminum Fluoride Addition Based on Aluminum Electrolysis Cell Operation Data and Its Application

  • 会议论文

  • 发表日期：

    2026年

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  • Changlin Li,
  • Rong Chen,
  • Yang Zhang,
  • Bin Fang,
  • Qingguo Jiao,
  • Jianlong Ju,
  • Wenjun Mao,
  • Lei Shi,
  • Guangyi Ren

摘要

A reasonable aluminum fluoride additionAluminum fluoride addition is not only necessary for sustaining the electrolyte compositionElectrolyte composition but also key to achieving favorable technical indicators. This paper analyzed the intrinsic relationships among cell control data, raw material inspection data, and field measurementMeasurements data. Based on production practices, factors influencing aluminum fluoride additionAluminum fluoride addition were investigated and quantitatively analyzed. This led to the development of a determination method for aluminum fluoride additionAluminum fluoride addition, which substantially enhanced the qualification rate and consistency of the bath ratioBath ratio. The proposed method was applied to adjust aluminum fluoride additionAluminum fluoride addition in a 200 kA potline. After the adjustment the qualification rate and distribution concentration of the bath ratioBath ratio significantly improved; the bath ratioBath ratio gradually decreased from 2.28–2.32 to 2.20–2.25 over six months; cell stabilityCell stability was enhanced and current efficiency increased from approximately 91.0–91.5% to 92.5–93.0%. This provides a reliable guarantee for the efficient and low-consumption operation of the electrolysis cellsElectrolysis cell.