低浓度氢氟酸体系中MIBK萃取分离钽铌的研究  

Study on Separation of Tantalum and Niobium by Extraction with MIBK from Low Hydrofluoric Acid Concentration System

作　　者：杨秀丽[1] 王晓辉[2] 孙青[3] 徐娟[2] 郑诗礼[2] 魏昶[1] 

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093 [2]中国科学院过程工程研究所,湿法冶金清洁生产技术国家工程实验室,北京100190 [3]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《有色金属（冶炼部分）》2012年第11期26-29,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家高技术研究发展计划(863计划)项目(2009AA06Z103);国家自然科学基金项目(51004094)

摘　　要：开展了低浓度氢氟酸体系中MIBK萃取分离钽铌的研究,考察了萃取时间、萃取相比、氢氟酸浓度、钽铌浓度、钽与铌质量比对萃取分离过程的影响。结果表明,在始氢氟酸浓度0.5mol/L、钽铌总浓度60g/L、萃取相比(O/A)为5、钽与铌质量比2的条件下萃取5min可获得最佳的钽铌分离效果,钽铌分离系数高达50 000。The extraction separation of tantalum and niobium with MIBK from low hydrofluoric acid con-centration system was studied. The O/A ratio, hydrofluoric acid concentration, tantalum and niobium concen tration and tantalum-niobium mass ratio on the effect of separation of tantalum and niobium were investigated. The results show that the separation factor of tantalum and niobium is 50 000 under the optimal extraction conditions including extraction time of 5 min, O/A ratio of 5, hydrofluoric acid concentration of 0.5 mol/L, tantalum and nio-bium total concentration of 60 g/L, and tantalum-niobium mass ratio of 2.

关 键 词：低浓度 氢氟酸 萃取 钽 铌 MIBK 

分 类 号：TF841.6[冶金工程—有色金属冶金]