Abstract This study investigates the recycling of mobile printed circuit boards through physical treatment followed by hydrometallurgical processing. Copper dissolution of the feed and processed fractions using different lixiviants were studied. Fluidization provided an effective separation of metallic values, and ~ 88% carbon removal were observed. The ferrous fraction was separated using a low-intensity magnetic separator. Cu and Au dissolution in the treated sample was many folds higher compared to the feed sample. The acid consumption for the treated fraction is quite low compared to the feed sample ~ 44–45 ml / g. It was found ~75% extraction efficiency with a purity of ~97% Cu was extracted using electrodeposition. Au was successfully precipitated from leach solution using urea, followed by sodium bisulfite. Finally, it can be concluded 4.1 g Au and 9 kg Cu can be recovered from 10 kg treated mobile printed circuit boards.

中文翻译：

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回收废弃的移动印刷电路板以提取金和铜

摘要 本研究调查了通过物理处理和湿法冶金处理回收移动印刷电路板。研究了使用不同浸出剂的进料和加工部分的铜溶解。流化提供了金属价值的有效分离，并且观察到约 88% 的碳去除。使用低强度磁选机分离亚铁级分。与进料样品相比，处理过的样品中铜和金的溶解度高出许多倍。与饲料样品相比，处理过的部分的酸消耗量非常低，约为 44–45 ml/g。发现~75% 的提取效率和~97% 纯度的Cu 使用电沉积被提取。使用尿素和亚硫酸氢钠成功地从浸出溶液中沉淀出金。最后，可以得出结论 4。