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| Separation of Aluminum from Mixed Rare Earth Chloride Solution by Extraction of Naphthenic Acid |
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Received:January 17, 2017
Revised:February 06, 2017
Accepted:February 06, 2017
Published Online:April 20, 2017
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| DOI：doi：10.3969/j.issn.1007-7545.2017.05.011 |
| KeyWord:naphthenic acid; mixed rare earth chloride solutions; extraction; aluminum |
| Author | Institution |
| liujun |
中国北方稀土集团冶炼分公司 |
| zhanglei |
中国北方稀土集团冶炼分公司 |
| daixiaobin |
中国北方稀土集团冶炼分公司 |
| LI Zhi-guo |
中国北方稀土集团冶炼分公司 |
| liuruijin |
中国北方稀土集团冶炼分公司 |
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| Abstract: |
| Effects of saponification degree and phase ratio (O/A) of organic phase on aluminum removal rate from mixed rare earth chloride solutions with aluminum content of 0.2~0.4 g/L were investigated by countercurrent cascade extraction in naphthenic acid-isooctyl alcohol-kerosene system. Aluminum at outlet of aqueous phase is qualified (Al2O3/REO<0.01%) under the optimum conditions including volume ratio of naphthenic acid, isooctyl alcohol, and kerosene of (15%~20%)︰(15%~20%)︰(60%~70%), saponification degree of 0.10, and phase ratio O/A=1/2. |
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