Copper smelting open-circuit (CSO) dust contains various valuable metals, such as copper, lead, and zinc, as well as undesirable toxic elements such as arsenic. Thus, the comprehensive recovery of valuable elements from CSO dust is highly significant from both economic and environmental perspectives. In this review, pyrometallurgical, pyrohydrometallurgical and hydrometallurgical processes are evaluated after the presentation of the formation mechanism and characterization of CSO dust. Hydrometallurgical processing is more suitable for treating the dust because of its low energy consumption, high metal recovery, and no secondary pollution. After the introduction of valuable metal recovery by cementation, sulfuration precipitation, and solvent extraction from CSO dust leaching solution, arsenic removal from the solution by lime, sulfides, iron salts, and natroalunite precipitations was reviewed. Arsenical natroalunite has excellent long-term stability, so natroalunite precipitation is very promising for arsenic immobilization.

中文翻译：

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从铜冶炼开路粉尘和砷处理中综合回收有价元素的综述

铜冶炼开路 (CSO) 粉尘包含各种有价金属，如铜、铅和锌，以及有害的有毒元素，如砷。因此，从经济和环境的角度来看，从 CSO 粉尘中全面回收有价值的元素都非常重要。在这篇综述中，在介绍了 CSO 粉尘的形成机制和特征之后，对火法冶金、火法湿法冶金和湿法冶金工艺进行了评估。湿法冶金具有能耗低、金属回收率高、无二次污染等优点，更适合处理粉尘。引入有价金属回收后，从 CSO 粉尘浸出液中通过胶结、硫化沉淀和溶剂萃取，通过石灰、硫化物、审查了铁盐和钠铝石沉淀。砷化钠铝石具有优异的长期稳定性，因此钠铝石沉淀法在砷固定化方面非常有前景。