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| Study of Stripping for Loaded Organic Phase in DIBK Synergistic Extraction System |
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Received:November 02, 2014
Revised:November 02, 2014
Accepted:November 05, 2014
Published Online:March 23, 2015
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| DOI：10.3969/j.issn.1007-7545.2015.04.006 |
| KeyWord:zirconium; hafnium; DIBK; loaded organic phase; stripping |
| Author | Institution |
| XU Zhi-gao |
武汉工程大学 绿色化工过程教育部重点实验室;北京有色金属研究总院 矿物资源与冶金材料研究所 |
| LI Panhong |
武汉工程大学 绿色化工过程教育部重点实验室 |
| CHI Ru-an |
武汉工程大学 绿色化工过程教育部重点实验室 |
| WANG Li-jun |
北京有色金属研究总院 矿物资源与冶金材料研究所 |
| WU Ming |
北京有色金属研究总院 矿物资源与冶金材料研究所 |
| ZHAO Jun |
武汉工程大学 绿色化工过程教育部重点实验室 |
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| 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 organic phase in DIBK synergistic extraction system. |
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