LiNi0.8Co0.15Al0.05O2中金属回收过程的化学变化研究OA
Study on the chemical changes during the metal recovery process in LiNi0.8Co0.15Al0.05O2
为促进报废LiNi0.8Co0.15Al0.05O2 中能源金属锂、镍、钴的资源化回收利用,本文研究了以NaHSO4·H2O作为焙烧添加剂时,焙烧温度对焙烧过程中物相变化以及金属回收率的影响.研究结果表明:不同焙烧温度下该体系发生了不同的化学反应,在低温下焙烧,LiNi0.8Co0.15Al0.05O2不能完全发生化学转化;当焙烧温度为550℃时,焙烧产物的物相组成为LiNaSO4、Na2Ni(SO4)2、Na2Co(SO4)2、Na6Ni(SO4)4、Na6Co(SO4)4、NiCo2O4.焙烧产物中Ni、Co、Na元素呈弥散分布.经焙烧-水浸出处理后,LiNi0.8Co0.15Al0.05O2浸出率随着焙烧温度的升高而增加,当焙烧温度为550℃时,LiNi0.8Co0.15Al0.05O2的浸出率为89.96%.
To promote the resource recovery and reuse of lithium,nickel,and cobalt from spent LiNi0.8Co0.15Al0.05O2,this study investigated how roasting temperature influences phase change and metal recovery when NaHSO4·H2O was used as a roasting additive.The results indicate that distinct chemical reactions occur at varying roasting temperatures.At relatively low roasting temperatures,LiNi0.8Co0.15Al0.05O2 cannot undergo complete chemical conversion.When the roasting temperature reaches 550℃,the roasting product consists of LiNaSO4,Na2Ni(SO4)2,Na2Co(SO4)2,Na6Ni(SO4)4,Na6Co(SO4)4,and NiCo2O4,indicating that Ni,Co,and Na are well dispersed in the calcined material.After roasting-water leaching treatment,the leaching ratio of LiNi0.8Co0.15Al0.05O2 increases with the increase of roasting temperature.At a roasting temperature of 550℃,the leaching ratio reaches 89.96%.
王大辉;郭永琪;陈怀敬;郑阳;徐晶
兰州理工大学,省部共建有色金属先进加工与再利用国家重点实验室,兰州 730050兰州理工大学,省部共建有色金属先进加工与再利用国家重点实验室,兰州 730050兰州理工大学,理学院,兰州 730050兰州理工大学,省部共建有色金属先进加工与再利用国家重点实验室,兰州 730050兰州理工大学,省部共建有色金属先进加工与再利用国家重点实验室,兰州 730050
矿业与冶金
报废锂离子动力电池资源化利用焙烧温度金属回收
spent lithium-ion power batteryresource reuseroasting temperaturemetal recycling
《有色金属科学与工程》 2026 (1)
1-8,8
国家自然科学基金资助项目(51864032)沈阳材料科学国家(联合)实验室-有色金属加工与再利用国家重点实验室联合基金资助项目(18LHZD002)
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