Abstract
Platinum (Pt) is a critical raw material for automotive catalytic converters due to its high-temperature stability, corrosion resistance and catalytic activity, whereas its limited primary resources and uneven distribution make it hard to meet the growing demand of platinum. Spent automotive catalyst (SAC) is currently the most important secondary resource of platinum, of which the platinum content is much higher than that of the primary platinum resources. The recovery process of platinum from spent automobile catalyst mainly consists of pretreatment followed by enrichment and refining, involving pyro- and hydrometallurgical techniques, among which enrichment and refining processes are extremely important for platinum recovery from spent automobile catalyst. This paper provides an overview of the technologies for platinum recovery from spent automotive catalyst. The emphasis is placed on the processes of enrichment and refining based on hydrometallurgical techniques. Future directions of research and development of platinum recovery from spent automobile catalyst are also proposed.
Graphical Abstract
摘要
金属铂具有优异的物化性能,是目前汽车催化转化器的关键原材料。含铂矿产资源储量少、分布不均且成分复杂,难以满足其日益增长的需求。废汽车催化剂作为主要的含铂二次资源,产生量大、铂含量高,其高效回收可有效缓解铂的供需压力。从废汽车催化剂中回收铂,主要包括预处理、富集和精炼三大工序,涉及火法和湿法冶金处理工艺。本文基于湿法冶金,对从废汽车催化剂中回收铂的富集和精炼工艺技术进行综述,并进一步提出从废汽车尾气催化剂中回收铂的发展建议。
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Acknowledgements
This study was financially supported by the Natural Science Foundation of Anhui Province (No. 2108085J26), the National Natural Science Foundation of China (Nos. 51904003 and U1703130), the Key Research and Development Plan of Anhui Province (No. 2022n07020004) and the Open Foundation of State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization (No. CNMRCUKF2208).
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Ge, T., He, JD., Xu, L. et al. Recovery of platinum from spent automotive catalyst based on hydrometallurgy. Rare Met. 42, 1118–1137 (2023). https://doi.org/10.1007/s12598-022-02236-2
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DOI: https://doi.org/10.1007/s12598-022-02236-2