摘要
采用碱溶解铝→低固液比盐酸浸出→P507萃取→碳酸沉锂→结晶回收钴的流程,研究了废旧锂电池中金属铝和钴的回收工艺。探讨了氢氧化钠的浓度和pH值对铝产率的影响;考察了盐酸的浓度、溶解时间以及双氧水加入的量对钴的浸出率的影响。试验表明,当pH值为10,氢氧化铝的浓度为0.1mol/L时铝的回收率可以达到92%;在盐酸的浓度为9%,溶解时间为2.5 h的条件下钴的浸出率可以达到90%。
The recovery processes of cobalt and aluminum from spent lithium batteries were investigated. The effect of the concentration of sodium hydroxide and pH value and on the yield of aluminum hydroxide were studied. In addition, the effect of the concentration of hydrochloric acid, dissolve time and the dosage of hydrogen peroxide on the leaching rate of cobalt were discussed. The results indicated under the conditions of 0. 1 mol/L concentration of aluminum hydroxide and pH 10, the recovery of aluminum could be up to 92%. When the concentration of hydrochloric acid was 9% and the dissolve time was 2.5 h, the leaching rate of cobalt can reach 89%.
出处
《广州化工》
CAS
2013年第9期118-120,共3页
GuangZhou Chemical Industry
关键词
废旧锂电池
钴
铝
回收
spent lithium - ion battery
cobalt
aluminum
recover
