废锂离子电池正极材料的火法资源化技术研究进展

废锂离子电池兼具资源化价值与环境危害双重属性，故对其进行有价资源的二次回收再生，并同时实现无害化处理具有重要现实意义。火法技术因其处理流程短、高效、易工业化应用等特点，已成为废锂离子电池资源化研究热点之一，其主要基于高温条件下的化学转化，实现有价金属Li、Co、Ni等的回收或资源化再生。系统介绍了火法技术在废锂离子电池正极材料资源化中的应用及其研究现状，包括电极材料解离、有价金属冶炼回收、正极活性材料再生等方面，分析了不同热处理技术的优势及其存在的问题，并展望了未来废锂离子电池正极材料火法资源化处理技术的研究方向。

RESEARCH PROGRESS ON RECOVERY OF CATHODE MATERIAL FROM SPENT LITHIUM-ION BATTERIES BY PYROMETALLURGY

Due to the existence of valuable and hazardous materials, it is of great practical significance to carry out the recovery and regeneration of spent lithium-ion batteries with environment-friendly ways. With the characteristics of short treatment process, high efficiency and easy industrial application, pyrometallurgy has become the hotspot of spent lithium-ion batteries recycling. It can realize the recycling of valuable metals such as Li, Co and Ni based on the chemical transformation at high temperatures. This paper summarized the application of pyrometallurgy in the cathode material from spent lithium-ion batteries and its research status, including electrode materials dissociation, valuable metals recycling, the positive active material regeneration, etc,. Meanwhile, the advantages and disadvantages of different thermal treatment technology were analyzed and the research direction of the cathode material by pyrometallurgy in the future was also prospected.