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Sulfuric acidSulfuric acid mist is an undesired by-product of the copper electrowinningCopper electrowinning process. The use of physical controls such as cell hoods or the addition of chemical mist suppressants are typically employed to effectively mitigate the health hazards associated with acid mistAcid mist. However, a recent focus for the copper solvent extractionCopper solvent extraction and electrowinningElectrowinning (SX-EW) industry has been to test new mist suppressants due to the phase out of the previously used fluorocarbon based mist suppressants. A suitable alternative must demonstrate effectiveness in mist suppression at economic concentrations, compatibility with the solvent extractionSolvent extraction (SX) circuit and organic phase, along with compatibility in electrowinningElectrowinning (EW) without impacting plating performancePerformance or cathode qualityCathode quality. In this paper, a new non-fluorocarbon mist suppressant, ACORGA® EW98, is presented, which has demonstrated acid mist suppressionAcid mist suppression along with SX and EW compatibility. PerformancePerformance testing will be reviewed from initial development studies and pilot test work to evaluationsEvaluation at an industrial-scale test.

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Performance Testing of a New Non-fluorocarbon Acid Mist Suppressant for Copper Electrowinning

  • 会议论文

  • 发表日期：

    2025年

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  • Tim Doubleday,
  • William Szolga,
  • Tyler McCallum,
  • Jose Carlos Durazo,
  • Justin Jensen,
  • Luis Moya

摘要

Sulfuric acidSulfuric acid mist is an undesired by-product of the copper electrowinningCopper electrowinning process. The use of physical controls such as cell hoods or the addition of chemical mist suppressants are typically employed to effectively mitigate the health hazards associated with acid mistAcid mist. However, a recent focus for the copper solvent extractionCopper solvent extraction and electrowinningElectrowinning (SX-EW) industry has been to test new mist suppressants due to the phase out of the previously used fluorocarbon based mist suppressants. A suitable alternative must demonstrate effectiveness in mist suppression at economic concentrations, compatibility with the solvent extractionSolvent extraction (SX) circuit and organic phase, along with compatibility in electrowinningElectrowinning (EW) without impacting plating performancePerformance or cathode qualityCathode quality. In this paper, a new non-fluorocarbon mist suppressant, ACORGA® EW98, is presented, which has demonstrated acid mist suppressionAcid mist suppression along with SX and EW compatibility. PerformancePerformance testing will be reviewed from initial development studies and pilot test work to evaluationsEvaluation at an industrial-scale test.