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研究含铝废LiFePO4(LFP)正极粉中LFP和Al的浸出行为及浸出动力学.考察温度(273～368 K)、搅拌速率(200～950 r/min)、反应时间(0～240 min)、酸料比(0.1:1～1:1 mL/g)和液固比(3:1～9:1 mL/g)对浸出过程的影响.结果表明,反应物浓度和温度对Al浸出影响较大.在优化的浸出条件下,LFP和Al的浸出率分别为91.53％和15.98％.动力学研究表明,LFP的浸出受表面化学反应与扩散混合控制,活化能为22.990 kJ/mol;而Al的浸出仅受表面化学反应的控制,活化能为46.581 kJ/mol.在废LFP正极材料酸浸过程中控制浸出体系低温能有效抑制铝的溶解.“,”The leaching performance and leaching kinetics of LiFePO4 (LFP) and Al in Al-bearing spent LFP cathode powder were systematically studied. The effects of temperature (273?368 K), stirring speed (200?950 r/min), reaction time (0?240 min), acid-to-material ratio (0.1:1?1:1 mL/g) and liquid-to-solid ratio (3:1?9:1 mL/g) on the leaching process were investigated. The results show that the concentration of reactants and the temperature have a greater impact on the leaching of Al. Under the optimal conditions, leaching efficiencies of LFP and Al are 91.53％ and 15.98％, respectively. The kinetic study shows that the leaching of LFP is kinetically controlled by mixed surface reaction and diffusion, with an activation energy of 22.990 kJ/mol; whereas the leaching of Al is only controlled by surface chemical reaction, with an activation energy of 46.581 kJ/mol. A low leaching temperature can effectively suppress the dissolving of Al during the acid leaching of the spent LFP cathode material.