电极条件对硫酸介质中电解还原提纯镱过程的影响  

Electrode Effect on Separation of Yb/Tm,Lu by an Electrolytic Reduction Process in Sulphate Medium

作　　者：张玻[1] 贾江涛[1] 廖春生[1] 严纯华[1] 邓光明 戴志东 薛继慧 

机构地区：[1]北京大学稀土材料化学及应用国家重点实验室 [2]溧阳罗地亚方正稀土新材料有限公司,江苏溧阳213300

出　　处：《中国稀土学报》2005年第5期597-601,共5页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金资助项目(20371003&20221101)

摘　　要：研究了以钌铱钛合金网和汞分别为阳、阴电极,在无气氛保护条件下,采用电解还原方法从铥、镱、镥硫酸盐溶液中分离提纯镱的过程。讨论了在8 V恒电压时的电极间距、位置,以及阴、阳极表面积对电解过程中的电流、还原率影响。优化了电解还原过程,YbSO4产品的纯度稳定达到99.5%以上,一次收率可达80%;提镱后母液中的铥和镥被富集4倍以上,其中Lu含量高于50%,十分有利于后续铥/镥分离。YbSO4 purification by an electrolytic reduction method from Tm-Yb-Lu concentrates in sulphate medium was studied, in which Ru-Ir-Ti alloy nets and mercury were used as anode and cathode respectively under normal atmosphere without nitrogen or argon gas protection. The parameters of the electrodes, such as their areas, positions, and the distance between the anode and cathode were optimized for the electrolytic reduction process. By the optimal process, the product YbSO4 is purified to 99. 5% with recovery of 80%. Meanwhile, Lu is also concentrated into 50%, which is beneficial to its further purification.

关 键 词：硫酸体系 电解 铥 镱 镥 电极 稀土 

分 类 号：O614.33[理学—无机化学]