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| Study on Extraction Performance of Gallium by Cyanex272 in Sulfuric Acid Medium |
| Received:December 13, 2020 Revised:December 17, 2020 |
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| DOI：doi：10.3969/j.issn.1007-7545.2021.05.014 |
| KeyWord:Cyanex272; gallium; sulfuric acid medium; extraction; stripping |
| Author | Institution |
| QIU Li-li |
1江西理工大学，材料冶金化学学部，赣州， ;2广东省科学院稀有金属研究所，稀有金属分离与综合利用国家重点实验室，广东省稀土开发及应用重点实验室，广州， |
| ZHANG Kui-fang |
1江西理工大学，材料冶金化学学部，赣州， ;2广东省科学院稀有金属研究所，稀有金属分离与综合利用国家重点实验室，广东省稀土开发及应用重点实验室，广州， |
| LIU Zhi-qiang |
1江西理工大学，材料冶金化学学部，赣州， ;2广东省科学院稀有金属研究所，稀有金属分离与综合利用国家重点实验室，广东省稀土开发及应用重点实验室，广州， |
| WANG Rui-xiang |
1江西理工大学，材料冶金化学学部，赣州， |
| CHEN Jin-qing |
1江西理工大学，材料冶金化学学部，赣州， |
| ZHONG Xiao-cong |
1江西理工大学，材料冶金化学学部，赣州， |
| YUAN Xiang-yi |
2广东省科学院稀有金属研究所，稀有金属分离与综合利用国家重点实验室，广东省稀土开发及应用重点实验室，广州， |
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| Abstract: |
| Extraction performance of gallium by Cyanex272 in sulfuric acid medium was tested. Effects of parameters on extraction and stripping of gallium were investigated. Isotherms of extraction and stripping of gallium were plotted, and counter current tests were simulated. The results show that with sulfuric acid solution of 290 mg/L Ga3+and pH=2.0 as feed liquor, 15% Cyanex272+85% sulfonated kerosene (volume fraction) as extractant solution, gallium extraction rate is 99.50% in four-stage counter current extraction with O/A of 1︰4 under 25 ℃ for 10 min. Gallium in loaded organic can be stripped with 100 g/L H2SO4 solution and stripping rate is 98.11% in four-stage counter current stripping with O/A of 10︰1 under 25 ℃ for 10 min. After extraction and striping, gallium is enriched into stripped solution about by 40 times, in which gallium is easily recovered as Ga2O3 product by neutralization precipitating and roasting. |
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