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以Lix54、TOPO为萃取剂,煤油为稀释剂,萃取回收废旧三元锂离子电池浸出萃余液中的锂。采用单因素试验法,研究了Lix54与TOPO配比、相比、萃取剂浓度、料液pH、萃取反应时间对锂萃取率的影响。结果表明,在Lix54∶TOPO=2(mL/g)、萃取剂浓度45%、萃取时间10min、料液pH=13、相比O/A=1∶1的条件下,锂的萃取率可达98.5%。负载有机相经水洗、盐酸反萃、碳酸钠沉淀可得到合格的电池级碳酸锂。
Abstract：Lithium was extracted from leachate of waste ternary lithium ion batteries with Lix54 and TOPO as extractant and kerosene as diluent.Effects of Lix54 and TOPO ratio,phase ratio(O/A),extractant concentration,extraction time,pH value of feed solution,and extraction time on Li extraction rate were investigated by single factor experiment.The results show that Li extraction rate is 98.5%under the conditions including Lix54∶TOPO=2,extractant concentration of 45%,extraction time of 10 min,pH value of feed solution of 13,and O/A=1/1.Load organic phase is washed,stripped with hydrochloric acid,and sodium carbonate precipitated to prepare qualified battery-grade lithium carbonate.
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基本信息:
中图分类号:X705;TF826.3
引用信息:
[1]唐明洁,刘少葵,骆弟阔,等.Lix54与TOPO协同萃取回收锂电池浸出液中锂的工艺研究[J].有色金属(冶炼部分),2020(10):28-32.
基金信息:
国家重点研发计划项目(2018YFC1901801,2018YFC1901803); 宁乡市科技重大专项项目(NXKJ-ZDZX-(201807)); 宁乡市科技计划项目(NXKJ-JCKY-(201805))
2020-10-12
2020-10-12