由锌锰硫酸溶液三相萃取锌锰离子  

Three-phase Extraction of Zn^(2+) and Mn^(2+) from Their Sulfate Solution

作　　者：金声超[1,2] 常志东[1] 王康[1,2] 华超[1] 于品华[1,2] 马印臣[1,2] 刘会洲[1] 

机构地区：[1]中国科学院过程工程研究所绿色过程与工程重点实验室,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《过程工程学报》2009年第4期683-688,共6页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:2007CB714301;2007CB613500);国家重点基础研究发展规划(973);国家自然科学基金资助项目(编号:20406021;20876157);GF基础科研基金资助项目(编号:A1320070102)

摘　　要：以P204煤油溶液(油相,O)、PEG10000水溶液(水相1,W1)及锌锰离子的硫酸铵盐溶液(水相2,W2)构建三相萃取体系(O-W1-W2),将其对锌锰离子的萃取效率与传统溶剂萃取[O-W'2(锌锰硫酸溶液)]和双水相萃取(W1-W2)作了比较.结果表明,加入KSCN后,三相体系能有效地一步分离锌锰离子.将SCN-/Zn2+摩尔比由10增大至60,W1相只富集Zn2+,且Zn2+总的萃取率(90%)高于O-W'2(52.8%)和W1-W2(86.2%),O相对Mn2+的萃取率(28%)高于O-W1(10.2%).Three-liquid-phase extraction system（O-W1-W2） was formed by P204 dissolved in kerosene（oil phase,O）,PEG 10000 solution（first water phase,W1） and ammonium sulfate solution including Zn2＋ and Mn2＋（second water phase,W2）.Its extraction of Zn2＋ and Mn2＋ was compared with solvent extraction（O-W＇2,sulfate solution of Zn2＋ and Mn2＋ as W＇2） and aqueous two-phase system（W1-W2）.The results showed that after adding KSCN,O-W1-W2 could separate Zn2＋ and Mn2＋ at one step effectively.Increasing molar ratio of SCN-to Zn2＋ from 10 to 60,W1 phase only extracted Zn2＋ and the total extraction rate of Zn2＋ in O-W1-W2（90%） was higher than that of O-W＇2 and W1-W2（52.8% and 86.2% respectively）.Extraction rate of Mn2＋ in O phase was higher than that of O-W＇2（10.2%）.

关 键 词：三相萃取体系 萃取分离 锌锰离子 

分 类 号：TF804.2[冶金工程—有色金属冶金]