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| Extraction of Yttrium-rich from P507 Loaded with Yttrium by Oxalic Acid Stripping |
| Received:May 20, 2020 Revised:May 22, 2020 |
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| DOI：doi：10.3969/j.issn.1007-7545.2020.08.013 |
| KeyWord:yttrium-rich; oxalic acid; stripping; precipitation; P507 |
| Author | Institution |
| WU Ying |
赣州有色冶金研究所 |
| ZHOU Jie-ying |
赣州有色冶金研究所 |
| HU Xiaomi |
赣州有色冶金研究所 |
| ZHANG Ji-kai |
赣州有色冶金研究所 |
| CHAN dong-ying |
赣州有色冶金研究所 |
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| Abstract: |
| Process parameters of oxalic acid stripping and direct precipitation loading of yttrium-rich P507 organic phase were studied. Effects of oxalic acid dosage, stripping temperature, O/A ratio, stripping time, and stripping series on RE stripping rate were investigated. The results show that stripping rate of yttrium-rich rare earth is 99.45 % and TREO in yttrium-rich product is 98.0% above with Cl-<0.05% and residual carbon of 0.042% under the optimum conditions including oxalic acid dosage of 130% of theoretical value, stripping temperature of 20 ℃, O/A=1/1, stripping time of 20 min, and stripping series of 11. |
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