dibk萃取体系负载有机相反萃取研究-有色金属.doc

DIBK协萃体系负载有机相反萃行为研究 徐志高1,2，李攀红1，池汝安1，王力军2，吴明2，赵骏1 （1.武汉工程大学 绿色化工过程教育部重点验室，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） 摘要：不同酸度的盐酸和硫酸为反萃剂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2.0 mol/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8.0 mol/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3.0 mol/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2.0 mol/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。 关键词：锆；铪；DIBK；负载有机相；反萃 中图分类号：TF841.4 文献标志码：A 文章编号：1007-7545（201）0-0000-00 Study of Stripping for Loaded Organic Phase in DIBK Synergistic Extraction System XU Zhi-gao1,2, LI Pan-hong1,CHI Ru-an1, WANG Li-jun2, WU Ming2, ZHAO Jun1 (1. Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China; 2. Division of Mineral Resources, Metallurgy and Materials, General Research Institute for Nonferrous Metals, Beijing 100088, China) Abstract: 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