机械化学法回收废旧锂电池正极材料中有价金属  

Mechanochemical Recovery of Valuable Metals in Cathode Materials of Waste Lithium Batteries

作　　者：于洪浩[1] 刘权智 乔骞 李印 王坤 李鑫[1] YU Honghao;LIU Quanzhi;QIAO Qian;LI Yin;WANG Kun;LI xin(Shenyang Ligong University,Shenyang 110159,China)

机构地区：[1]沈阳理工大学材料科学与工程学院,沈阳110159

出　　处：《沈阳理工大学学报》2022年第4期37-41,48,共6页Journal of Shenyang Ligong University

基　　金：国家自然科学基金项目(U13622015,51304139);辽宁省自然科学基金项目(20180550902,2019-ZD-0258)。

摘　　要：采用机械活化回收废弃锂电池正极材料钴酸锂(LiCoO_(2))中的有价金属,实现常温环境中有价金属的高效浸出;通过机械活化过程改变LiCoO_(2)结构、提高Li CoO_(2)晶体的无序程度及增加LiCoO_(2)的反应活性;研究球磨转速、球磨时间、固液比、球料比、盐酸浓度和H_(2)O_(2)浓度对LiCoO_(2)中有价金属浸出率的影响。实验表明:在球磨转速500r/min、球磨时间30min、球料比25∶1、固液比1∶150、盐酸浓度为0.5mol/L、H_(2)O_(2)浓度为1mol/L条件下,Co和Li的浸出率分别达到94.7%和80%。A mechanical activation was used to recover the valuable metals in LiCoO_(2)of waste lithium battery.The efficient leaching of valuable metals in normal temperature environ-ment was realized.The structure of LiCoO_(2)was destroyed,the disorder degree of Li-CoO_(2)was increased and the reaction activity of LiCoO_(2) was increased,in the process of mechanical activation.The influence of ball milling speed,ball milling time,solid-to-liquid ratio,ball-to-material ratio,HCl concentration and H_(2)O_(2) concentration on the leaching of LiCoO_(2)was systematically investigated,and the optimal conditions were de-termined.Under the optimal conditions,the ball milling speed is 500 r/min,the ball milling time is 30 min,the ball-to-battery ratio is 25∶1,solid-liquid ratio 1∶150,the HCl concentration is 0.5 mol/L,and the H_(2)O_(2) concentration is 1 mol/L.The leaching rate of Co and Li reached 94.7%and 80%respectively.

关 键 词：钴酸锂 机械活化 浸出 正极材料 

分 类 号：TF09[冶金工程—冶金物理化学]