ABSTRACT

The equilibrium-phase relations between copper mattes and spinel-saturated iron silicate slags were investigated at 1250°C and pSO₂ of 0.25 atm. The experiments were conducted in synthesized spinel crucibles (Fe₃O₄) in controlled CO-CO₂-SO₂-Ar gas mixtures using a high-temperature isothermal equilibration/quenching technique. The equilibrium-phase compositions were characterized using an electron probe X-ray microanalyzer. The compositions of matte and slag were displayed as a function of matte grade or oxygen partial pressure. The present results obtained at spinel saturation in the matte-slag equilibrium system were compared with observations in the literature. This study improves the experimental thermodynamic data on the matte-slag-spinel-gas equilibria systems.

摘要

在 1250°C 和0.25 atm 的p SO ₂下研究了冰铜和尖晶石饱和硅酸铁渣之间的平衡相关系。实验在合成尖晶石坩埚 (Fe ₃ O ₄ ) 中在受控的 CO-CO ₂ -SO _2中进行-Ar 气体混合物使用高温等温平衡/淬火技术。使用电子探针 X 射线显微分析仪对平衡相组成进行了表征。冰铜和炉渣的组成显示为冰铜品位或氧分压的函数。将目前在冰铜渣平衡系统中尖晶石饱和时获得的结果与文献中的观察结果进行了比较。本研究改进了冰铜-矿渣-尖晶石-气体平衡系统的实验热力学数据。