A clean hydrometallurgical process has been developed to efficiently and economically recover selenium, copper, gold, silver and lead from a copper anode slime. The mixture of H₂SO₄ and H₂O₂ was demonstrated to be effective for selenium leaching based on their synergistic effects, and the potential synergy mechanism was proposed. Na₂SO₃ reduction and iron powder precipitation were successively adopted to recover selenium and copper from the leaching solution. NaClO₃-H₂SO₄-NaCl solution was chosen to selectively leach gold, and the dissolved gold was recovered by H₂C₂O₄ reduction. Na₂SO₃ was used to leach silver with a sealed reactor, and the leached silver was recovered through Na₂S₂O₄ reduction. A lead concentrate with lead grade of 57.2% was eventually obtained after extracting selenium and copper, gold and silver. The recoveries of selenium, copper, gold, silver and lead separately achieved 92.9%, 95.8%, 99.1%, 99.4% and 99.8% under optimal conditions, and the purities of obtained products of simple substance selenium, sponge copper, metallic gold and metallic silver were 94.2%, 85.3%, 98.7% and 96.5%, respectively. The element distribution analysis indicated that the most of these valuable elements entered their products while hazardous element arsenic displayed a relatively scattered distribution. The cost-benefit analysis revealed that a revenue of 702217.8 CNY could be gained for treating one ton of anode slime using the proposed process. This process is eco-friendly and possesses high economic benefit, and thus shows good potential of industrial application.

已经开发出一种清洁的湿法冶金工艺，以从铜阳极泥中高效经济地回收硒，铜，金，银和铅。基于H ₂ SO ₄和H ₂ O ₂的协同作用，证明它们对硒的浸出是有效的，并提出了潜在的协同作用机理。相继采用Na ₂ SO ₃还原和铁粉沉淀从浸出液中回收硒和铜。选择NaClO ₃ -H ₂ SO ₄ -NaCl溶液选择性浸出金，并通过H ₂ C ₂回收溶解的金。O ₄减少。用Na ₂ SO ₃通过密封反应器浸出银，并通过Na ₂ S ₂ O ₄回收浸出的银。减少。提取硒，铜，金和银后，最终获得铅含量为57.2％的铅精矿。在最佳条件下，硒，铜，金，银，铅的回收率分别达到92.9％，95.8％，99.1％，99.4％和99.8％，得到的单质硒，海绵铜，金属金和金属的纯度银分别为94.2％，85.3％，98.7％和96.5％。元素分布分析表明，这些有价值的元素大多数进入其产品，而有害元素砷显示出相对分散的分布。成本效益分析表明，采用该工艺处理一吨阳极泥可得到702217.8元的收益。这个过程是环保的，具有很高的经济效益，