DIBK协萃体系负载有机相反萃行为研究  

Study of Stripping for Loaded Organic Phase in DIBK Synergistic Extraction System

作　　者：徐志高[1,2] 李攀红[1] 池汝安[1] 王力军[2] 吴明[2] 赵骏[1] 

机构地区：[1]武汉工程大学绿色化工过程教育部重点实验室,武汉430073 [2]北京有色金属研究总院矿物资源与冶金材料研究所,北京100088

出　　处：《有色金属（冶炼部分）》2015年第4期20-23,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(51174146;51374158);"十二五"国家科技支撑计划项目(2012BAB10B10);教育部新世纪优秀人才支持计划项目(NCET-13-0941);武汉市青年科技晨光计划项目(2014070404010217)

摘　　要：以不同酸度的盐酸和硫酸为反萃剂从DIBK-TBP体系和DIBK-P204体系负载有机相中反萃锆、铪。结果表明,对DIBK-TBP体系负载有机相,先采用酸度为2.0mol/L的盐酸水溶液对锆进行反萃,单级反萃率达85%,得到富锆液,然后用酸度为8.0mol/L的硫酸水溶液对铪进行反萃,单级反萃率达90%,得到少锆的铪液;对DIBK-P204体系负载有机相,先采用酸度为3.0mol/L的硫酸水溶液对铪进行反萃,单级反萃率达90%,得到少锆的铪液,然后采用酸度为2.0mol/L的盐酸水溶液对锆进行反萃,单级反萃率达70%,得到少铪的锆液。采用盐酸和硫酸可顺利实现对DIBK体系负载有机相中锆、铪的反萃取。Zirconium and hafnium were stripped from loaded organic phase in DIBK-TBP and DIBK-P204 system respectively applying hydrochloric acid with different acidities and sulfuric acid as back extraction agents. The results show that zirconium on loaded organic phase in DIBK-TBP system is firstly striped by acidity of 2.0 mol/L hydrochloric acid with single-stage stripping rate of 85%, and zirconium-rich solution is obtained, then hafnium is striped sequentially by acidity of 8.0 mol/L sulfuric acid with single-stage stripping rate of 90%, and hafnium-rich solution with little zirconium is obtained. While hafnium on loaded organic phase in DIBK-P204 system is striped firstly by acidity of 3.0 mol/L sulfuric acid with single-stage stripping rate of 90%, and hafnium-rich solution with little zirconium is obtained, then zirconium is striped by acidity of 2.0 mol/L hydrochloric acid with single-stage stripping rate of 70%, and zirconium-rich solution with little hafnium is obtained. Therefore, hydrochloric acid and sulfuric acid can strip zirconium and hafnium favorably from loaded organic phase in DIBK synergistic extraction system.

关 键 词：锆 铪 DIBK 负载有机相 反萃 

分 类 号：TF841.4[冶金工程—有色金属冶金]