废旧动力电池正极材料中有价金属回收过程的动力学机理研究

Waste power battery cathode material, which contains a large number of valuable metals, will cause great harm to the environment if it is not processed. With the rapid development of China's new energy automotive industry, it is necessary to develop extraction methods to offset the disadvantages of China's resources for cobalt, manganese, nickel, lithium and other second complex resource in waste power battery materials.. The recycling process for valuable metal in waste power battery cathode material was proposed. It is to reduce the micro-kinetic mechanism in reduction roasting reaction of the waste LNCM materials, and the multiphase interface reaction mechanism in reduction leaching process, and the multiphase interface reaction mechanism in poly-metallic ion synergistic extraction process, and dynamic mechanism of co-precipitation process of LNCM precursor. The foregoing results will be used to guide the relevant process parameter settings, and the process parameters adjust according to feedback indicators such as the production efficiency and energy consumption. This can lead to changes law of the key parameters. With the help of LNCM material’s rule of key points in the recycling process of reduction roasting pretreatment, reduction leaching, synergistic extraction and co-precipitation, arbitrary waste battery materials can be simulated and predicted, and a series of optimal process parameters and industrial routes will be proposed. Based on the valuable metal recovery technology prototype which is short-process, high-value, and environment-friendly, it has laid the foundation for industrial applications of recycling process for valuable metal in waste power battery cathode material.

废旧动力电池正极材料含有大量有价金属，如不处理则对环境造成极大危害。随着我国新能源汽车产业迅速发展，迫切需要开发针对含钴、锰、镍、锂等废旧动力电池正极材料二次复杂资源的提取方法以抵消我国资源的劣势。. 课题组提出“废旧动力电池正极材料中有价金属回收工艺”，拟通过研究废旧三元材料还原焙烧反应微观动力学机理、还原浸出过程多相界面反应机理，Ni、Co、Mn离子协同萃取多相界面反应机理，三元前驱体共沉淀过程动力学机理，指导相关工艺参数设定，并根据生产效率和能耗指标反馈调整工艺参数，得出关键参数的变化规律。借助废旧三元材料回收工艺，进而模拟预测任意废旧动力电池正极材料中有价金属回收，提出一系列最优工艺参数和工业路线。为“废旧动力电池正极材料中有价金属回收工艺”的短流程、高值化环保再生技术工业化应用奠定基础。

废旧动力电池正极材料含有大量有价金属，如不处理则对环境造成极大危害。随着我国新能源汽车产业迅速发展，迫切需要开发针对含钴、锰、镍、锂等废旧动力电池正极材料二次复杂资源的提取方法以抵消我国资源的劣势。该项目通过研究废旧三元材料还原焙烧反应微观动力学机理、还原浸出过程多相界面反应机理，Ni、Co、Mn离子协同萃取反应机理，三元前驱体共沉淀过程动力学机理，指导相关工艺参数设定，并根据生产效率和能耗指标反馈调整工艺参数，得出关键参数的变化规律。借助废旧三元材料回收工艺，进而模拟预测任意废旧动力电池正极材料中有价金属回收，为“废旧动力电池正极材料中有价金属回收工艺”的短流程、高值化环保再生技术工业化应用奠定基础。