|
| Study of Recovery of REEs from Leaching Residue of Wet-process Phosphoric Acid |
|
Received:February 18, 2014
Revised:February 18, 2014
Accepted:February 19, 2014
Published Online:July 21, 2014
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2014.08.009 |
| KeyWord:wet-process phosphoric acid; REEs residue; sulfuric acid; leaching rate |
| Author | Institution |
| Feng LinYong |
北京矿冶研究总院 |
| Jiang XunXiong |
北京矿冶研究总院 |
| Wang ShengDong |
北京矿冶研究总院 |
| Jiang KaiXi |
北京矿冶研究总院 |
| Fan YanQing |
北京矿冶研究总院 |
| Wang HaiBei |
北京矿冶研究总院 |
| Zhang DengGao |
北京矿冶研究总院 |
|
| Hits: 2746 |
| Download times: 2981 |
| Abstract: |
| The feasibility to leach REEs with sulfuric acid from non-gypsum residue of phosphoric acid by wet-process was studied. The effects of concentration of sulfuric acid, reaction temperature and time, and ratio of liquid to solid (L/S) on recovery of REEs were investigated. The results show that the average leaching rate of REEs is 81.9% under the optimum conditions including sulfuric acid concentration of 14%, temperature of 90 ℃, L/S=4∶1, and reaction time of 2 h. The leached residue with sulfuric acid mainly contains quartz, columnar gypsum and needle-like gypsum. |
| Close |