The distributions of precious metals (gold, silver, platinum, and palladium) between copper matte and silica-saturated FeO_x-SiO₂/FeO_x-SiO₂-Al₂O₃/FeO_x-SiO₂-Al₂O₃-CaO slags were investigated at 1300 °C and \( P_{{{\text{SO}}_{ 2} }} \) = 0.5 atm. The experiments were carried out in silica crucibles under flowing CO-CO₂-SO₂-Ar gas atmosphere. The concentrations of precious metals in matte and slag were analyzed by Electron Probe X-ray Microanalysis and Laser Ablation-High-Resolution Inductively Coupled Plasma-Mass Spectrometry, respectively. The precious metal concentrations in matte and slag, as well as the distribution coefficients of precious metals between matte and slag, were displayed as a function of matte grade. The present results obtained at \( P_{{{\text{SO}}_{ 2} }} \) of 0.5 atm were compared with previous results at \( P_{{{\text{SO}}_{ 2} }} \) of 0.1 atm for revealing the effects of \( P_{{{\text{SO}}_{ 2} }} \) and selected slag modifiers (CaO and Al₂O₃) on precious metal distributions at copper matte smelting conditions. The present results also contribute experimental thermodynamic data of precious metal distributions in pyrometallurgical reprocessing of electronic waste via copper smelting processes.

冰铜和之间贵金属（金，银，铂和钯）的分布的二氧化硅饱和的FeO _X -SiO ₂ / FeO的_X -SiO ₂ -Al ₂ ö ₃ / FeO的_X -SiO ₂ -Al ₂ ö ₃ - CaO炉渣在1300°C和\（P _ {{{text {SO}} _ {2}}} \） = 0.5 atm的条件下进行了研究。实验是在二氧化硅坩埚中在流动的CO-CO ₂ -SO _{2下进行的}-氩气气氛。分别通过电子探针X射线微分析和激光烧蚀-高分辨率电感耦合等离子体质谱法分析了冰沙和炉渣中的贵金属浓度。显示了冰沙和炉渣中的贵金属浓度，以及冰沙和炉渣之间的贵金属分布系数，它们是冰沙等级的函数。将\（P _ {{{text {SO}} _ {2}}} \）在0.5 atm下获得的当前结果与\（P _ {{{\ text {SO}} _ {2} }}}（0.1个大气压，用于揭示\（P _ {{{\ text {SO}} _ {2}}} \\）和选定的炉渣改良剂（CaO和Al ₂ O ₃）在铜磨砂冶炼条件下的贵金属分布。本研究结果还有助于通过铜冶炼工艺对电子废物进行火法冶金处理中的贵金属分布的实验热力学数据。