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This study reviews commercial continuous copper convertingContinuous copper converting operationsOperation and the thermodynamicThermodynamics and physical properties of three types of slagsSlag: ironIron silicate, calcium ferrite and ferrousFerrous calcium silicate (FCS). The kineticsKinetics of copperCopper reduction from three slagsSlag in a kilogram-scale experimental campaign were investigated to evaluate the performancePerformance of these slagsSlag in copper convertingCopper converting slag cleaningSlag cleaning process. The experimental results indicate that the change in Cu concentration in the slagSlag follows first-order kineticsKinetics with respect to time. Despite some variabilityVariability in the data, it is evident that the reduction rate of FCS slagSlag is lower than that of ironIron silicate and calcium ferrite slagsCalcium ferrite slag. Furthermore, the reduction rates of ironIron silicate and calcium ferrite slagsCalcium ferrite slag are closer. This suggests that the reduction kineticsKinetics are likely controlled by mass transferMass Transfer in the liquid slagSlag phase, which is partially influenced by slagSlag viscosityViscosity.

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Properties and Copper Reduction Kinetics of Three Types of Converting Slags

  • 会议论文

  • 发表日期：

    2025年

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  • Chunlin Chen,
  • Tao Kan,
  • Yan-Hui Yang,
  • David Bott,
  • Paul Fitzgerald,
  • Robert West

摘要

This study reviews commercial continuous copper convertingContinuous copper converting operationsOperation and the thermodynamicThermodynamics and physical properties of three types of slagsSlag: ironIron silicate, calcium ferrite and ferrousFerrous calcium silicate (FCS). The kineticsKinetics of copperCopper reduction from three slagsSlag in a kilogram-scale experimental campaign were investigated to evaluate the performancePerformance of these slagsSlag in copper convertingCopper converting slag cleaningSlag cleaning process. The experimental results indicate that the change in Cu concentration in the slagSlag follows first-order kineticsKinetics with respect to time. Despite some variabilityVariability in the data, it is evident that the reduction rate of FCS slagSlag is lower than that of ironIron silicate and calcium ferrite slagsCalcium ferrite slag. Furthermore, the reduction rates of ironIron silicate and calcium ferrite slagsCalcium ferrite slag are closer. This suggests that the reduction kineticsKinetics are likely controlled by mass transferMass Transfer in the liquid slagSlag phase, which is partially influenced by slagSlag viscosityViscosity.