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| Study on Purification of Crude Scandium Oxide |
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Received:May 11, 2012
Revised:May 21, 2012
Accepted:May 22, 2012
Published Online:October 23, 2012
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| DOI：10.3969/j.issn.1007-7545.2012.11.013 |
| KeyWord:rare earth; scandium oxide; purification; titanium white waste acid |
| Author | Institution |
| weishiqiang |
中铝广西有色稀土开发有限公司 广西 南宁 |
| NONG Jian-tao |
中铝广西有色稀土开发有限公司 广西 南宁 |
| Tan Hai-xiang |
中铝广西有色稀土开发有限公司 广西 南宁 |
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| Abstract: |
| With crude scandium (Sc2O3 99%~99.95%) extracted from titanium white waste acid as raw material, scandium oxalate was prepared with the following purification processes including acid dissolution, T204 and D305 multistage extraction and back extraction, oxalic acid precipitation. The results show that scandium oxide with a high purity of 99.999% is obtained with the recovery of 93.49% after scandium oxalate calcining. |
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