高铝稀土料液萃取除铝工艺的研究  

Study on process of extracting aluminum from high-alumina rare earth solution

作　　者：刘志强[1] 朱薇[1] 郭秋松[1] 

机构地区：[1]广东省工业技术研究院(广州有色金属研究院),广东广州510650

出　　处：《材料研究与应用》2012年第4期256-258,共3页Materials Research and Application

基　　金：广东省产学研计划项目(2011B090400230);广东省自然科学基金项目(10151065101000000)

摘　　要：以环烷酸为萃取剂,分别采用先皂化和不皂化的方式对高铝稀土料液进行萃取除铝.结果表明,环烷酸对铝有较好的选择性,经过一级萃取,稀土料液中的铝含量低于20mg/L,而稀土萃取率低于10%,采用盐酸反萃进入环烷酸的稀土,再用草酸沉淀,稀土的收率大于99%.Aluminum was extracted from high-alumina rare earth solution by saponified naphthenic acid and unsaponified naphthenic acid. The results show that naphthenic acid has excellent selectivity on aluminum. By single stage extraction, aluminum content is lower than 20mg per liter in rare earth solution, while rare earth extracting rate is lower than 10 per cent. Rare earth in naphthenic acid were stripped by hydrochloric acid, and then precipitated by oxalic acid. The yield of rare earth was more than 99 %.

关 键 词：稀土 萃取 环烷酸 

分 类 号：TQ133.3[化学工程—无机化工]