A combined experimental and thermodynamic study has been carried out to determine the CaO effect on the equilibria between slag/matte/metal (Fe or Cu)/tridymite phases in the Cu-Fe-O-S-Si-Ca system at 1473 K (1200 °C). The experimental methodology included equilibration of the mixtures at high temperatures on substrates made from the primary phase, followed by rapid quenching of the samples and direct measurement of the condensed phase compositions using the Electron Probe X-ray Microanalysis (EPMA) technique. New experimental results have been obtained for fixed concentrations of CaO in slag phase (1.5, 6, 9, and 18 wt pct). All results have been plotted as functions of the copper concentration in the matte phase and provides information about the effect of CaO on the oxygen and sulfur concentration in the matte phase; the Fe/SiO₂ ratio in slag; and dissolved copper and sulfur in slag. The experimental research is part of integrated experimental and thermodynamic study aimed to development and optimisation a thermodynamic database for copper-containing systems of non-ferrous metallurgy.

结合实验和热力学研究，确定了CaO对1473 K（1200°C）的Cu-Fe-OS-Si-Ca系统中炉渣/雾面/金属（Fe或Cu）/鳞石英相之间平衡的影响。 C）。实验方法包括在高温下在由初相制成的基质上平衡混合物，然后快速淬灭样品并使用电子探针X射线微分析（EPMA）技术直接测量冷凝相的组成。对于渣相中固定浓度的CaO（1.5、6、9和18 wt pct），已经获得了新的实验结果。绘制了所有结果，作为哑相中铜浓度的函数，并提供了有关CaO对哑相中氧和硫浓度的影响的信息。铁/二氧化硅炉渣比例₂；并将铜和硫溶解在炉渣中。实验研究是集成实验和热力学研究的一部分，旨在开发和优化用于有色冶金含铜系统的热力学数据库。