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The present study focuses on the phase equilibriaPhase equilibria data in the multicomponentMulticomponent “CuO0.5”–PbO–ZnO- “FeO1.5”–SiO2– “SnO2”–NiO–(CaO–AlO1.5–MgO–SbO1.5) system in equilibrium with Cu/Sn/Ni metalMetal. The equilibration and quenching approach, followed by the electron probe X-ray microanalysis was used to characterize the phase equilibriaPhase equilibria in the discussed system under various conditions. The composition of the slagSlag selected for the present study was based on the industrial data for copperCopper recyclingRecycling processes. The applied method enabled the investigation of temperature effects, and the influence of oxygen partial pressures (pO₂). In addition, the effects of CaO, MgO, AlO1.5, and SbO1.5 on the phase equilibriaPhase equilibria in the “CuO0.5”–PbO–ZnO– “FeO1.5”–SiO2– “SnO2”–NiO–(CaO–AlO1.5–MgO–SbO1.5) system in the temperature range from 1170 to 1250 °C were experimentally characterized. The data obtained were used to improve the predictions of the developed thermodynamicThermodynamics modelModel in the area of the industrial interest.

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Multicomponent Phase Equilibria Study for Secondary Copper Recycling Applications

  • 会议论文

  • 发表日期：

    2025年

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  • Dieter Verwaest,
  • Maksym Shevchenko,
  • Georgii Khartcyzov,
  • Bart Blanpain,
  • Evgueni Jak

摘要

The present study focuses on the phase equilibriaPhase equilibria data in the multicomponentMulticomponent “CuO0.5”–PbO–ZnO- “FeO1.5”–SiO2– “SnO2”–NiO–(CaO–AlO1.5–MgO–SbO1.5) system in equilibrium with Cu/Sn/Ni metalMetal. The equilibration and quenching approach, followed by the electron probe X-ray microanalysis was used to characterize the phase equilibriaPhase equilibria in the discussed system under various conditions. The composition of the slagSlag selected for the present study was based on the industrial data for copperCopper recyclingRecycling processes. The applied method enabled the investigation of temperature effects, and the influence of oxygen partial pressures (pO₂). In addition, the effects of CaO, MgO, AlO1.5, and SbO1.5 on the phase equilibriaPhase equilibria in the “CuO0.5”–PbO–ZnO– “FeO1.5”–SiO2– “SnO2”–NiO–(CaO–AlO1.5–MgO–SbO1.5) system in the temperature range from 1170 to 1250 °C were experimentally characterized. The data obtained were used to improve the predictions of the developed thermodynamicThermodynamics modelModel in the area of the industrial interest.