With the aim of investigating deportments of precious metals in pyrometallurgical processing of waste electrical and electronic equipment, the distributions of selected precious metals (gold, silver, platinum, and palladium) between copper matte and three different silica-saturated slags (pure FeO x -SiO 2 , FeO x -SiO 2 -Al 2 O 3 , and FeO x -SiO 2 -Al 2 O 3 -CaO slag) were investigated at 1300 °C in controlled flowing CO-CO 2 -SO 2 -Ar gas atmosphere by a high-temperature isothermal equilibration technique. The phase compositions were analyzed by Electron Probe X-ray Microanalysis and Laser Ablation-High Resolution Inductively Coupled Plasma-Mass Spectrometry. It was shown that the distribution coefficients of gold, platinum, and palladium between matte and slag ( L m/s (Me) = [Me] in matte /(Me) in slag ) were very high and increased with increasing matte grade. The distributions to the matte phase were increased by adding basic oxides alumina and lime into the acidic silicate slags. The experimentally measured distribution coefficients L m/s (Me) followed the order of platinum > palladium > gold > silver. The present experimental results can be used for upgrading thermodynamic databases for the complex recycling processes through nonferrous smelting.

中文翻译：

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通过铜冶炼从城市采矿中回收贵金属（Au、Ag、Pt 和 Pd）

为研究废电子电器设备火法冶金处理中贵金属的行为，选定贵金属（金、银、铂和钯）在冰铜和三种不同二氧化硅饱和渣（纯 FeO x - SiO 2 、FeO x -SiO 2 -Al 2 O 3 和 FeO x -SiO 2 -Al 2 O 3 -CaO 渣）在 1300 °C 下在受控流动的 CO-CO 2 -SO 2 -Ar 气氛中进行了研究一种高温等温平衡技术。通过电子探针X射线微量分析和激光烧蚀-高分辨率电感耦合等离子体-质谱法分析相组成。结果表明，金、铂、亚光和炉渣之间的钯（L m/s (Me) = [Me] in matte /(Me) in slag）非常高，并且随着亚光等级的增加而增加。通过将碱性氧化物氧化铝和石灰添加到酸性硅酸盐炉渣中，增加了无光泽相的分布。实验测量的分配系数 L m/s (Me) 遵循铂 > 钯 > 金 > 银的顺序。目前的实验结果可用于升级有色金属冶炼复杂回收过程的热力学数据库。