摘要
利用二级逆流的方法浸出废旧锂离子电池正极片中的铝。考察了加料方式、碱浓度、碱分配比、温度对铝浸出率的影响。结果表明,在一级采用先加碱后缓慢加原料的方式,第二级碱浓度为15%,一、二级碱分配量分别占总碱量的40%和60%,一、二级反应时间分别为2 h,外界提供温度为95℃条件下,铝浸出率达98.0%。
Aluminum was leached from cathode electrode of spent lithium ion battery by two-stage countercurrent process. The effects of feeding mode, alkali concentration, addition rate of alkali in two stages and temperature on the leaching rate of aluminum were investigated. Raw malerial was fed slowly after adding alkali at the first stage. The addition of alkali at first stage and second stage accounted for 40% and 60%, respectively, of the total amount of alkali added, with the alkali concentration at the second stage reaching 15%. The leaching rate of aluminum reached 98% after 2 h reaction time for each stage at an atmospheric temperature of 95 °C.
出处
《矿冶工程》
CAS
CSCD
北大核心
2012年第3期92-94,98,共4页
Mining and Metallurgical Engineering
关键词
废旧锂离子电池
正极材料
综合回收
二级逆流
碱浸
铝
浸出率
spent lithium ion battery
cathode material
comprehensive recovery
two-stage countercurrent
alkalineleaching
aluminum
leaching rate
