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Alternate feeding of two feeder groups with equal rate is commonly employed in high-amperage reduction cellsReduction cell. Both anodeAnode changing and feeding malfunctions cause uneven alumina concentrationAlumina concentration, leading to anode effectsAnode Effect (AE), sludge, and lower current efficiency. Online precise measurementMeasurements technology of zone anode currentZone anode current provides new ideas to improve the alumina concentrationAlumina concentration uniformityUniformity and rapid diagnosis of individual feeding port faults. In this study, the statistical laws and zone resistanceZone resistance response characteristics of underfeeding and overfeeding stages using the zone anode currentZone anode current of a 400kA aluminum reduction cellAluminum reduction cell were analyzed. The differences in the zone resistanceZone resistance changes over time in the same feeding stage were studied. The results of manual-controlled feeding experiments showed that the response of zone resistanceZone resistance to low local alumina concentrationAlumina concentration was weaker than that to high local alumina concentrationAlumina concentration, which may be the combined effects of mass transferMass transfer between zones and the resistance response to alumina concentrationAlumina concentration.

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Response Characteristics of Zone Resistance to Alumina Feeding in Aluminum Reduction Cells

  • 会议论文

  • 发表日期：

    2026年

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  • Yi Meng,
  • Hui Zhou,
  • Chun Li,
  • Jun Tie,
  • Rentao Zhao,
  • Zhifang Zhang,
  • Hao Xiao,
  • Dongwei Liu

摘要

Alternate feeding of two feeder groups with equal rate is commonly employed in high-amperage reduction cellsReduction cell. Both anodeAnode changing and feeding malfunctions cause uneven alumina concentrationAlumina concentration, leading to anode effectsAnode Effect (AE), sludge, and lower current efficiency. Online precise measurementMeasurements technology of zone anode currentZone anode current provides new ideas to improve the alumina concentrationAlumina concentration uniformityUniformity and rapid diagnosis of individual feeding port faults. In this study, the statistical laws and zone resistanceZone resistance response characteristics of underfeeding and overfeeding stages using the zone anode currentZone anode current of a 400kA aluminum reduction cellAluminum reduction cell were analyzed. The differences in the zone resistanceZone resistance changes over time in the same feeding stage were studied. The results of manual-controlled feeding experiments showed that the response of zone resistanceZone resistance to low local alumina concentrationAlumina concentration was weaker than that to high local alumina concentrationAlumina concentration, which may be the combined effects of mass transferMass transfer between zones and the resistance response to alumina concentrationAlumina concentration.