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| Study on Acid Leaching of Rare Earth-Containing Apatite Concentrates |
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Received:October 22, 2012
Revised:October 29, 2012
Accepted:October 29, 2012
Published Online:April 23, 2013
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| DOI：10.3969/j.issn.1007-7545.2013.05.011 |
| KeyWord:apatite; rare earth; acid; leaching |
| Author | Institution |
| Liu Zhenzhen |
广州有色金属研究院 |
| Liu Yong |
广州有色金属研究院 |
| Liu Mudan |
广州有色金属研究院 |
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| Abstract: |
| A certain rare earth-containing apatite concentrate was leached with nitric acid, sulfuric acid and hydrochloric acid, respectively. The results show that most of phosphorous is leached into solution while rare earth is dispersed both in solution and residues when leached by nitric acid. RE leaching rate is a little low while phosphorous leaching rate is higher, so phosphorous and RE can be separated roughly by a good control of conditions when sulfuric acid is used as leaching agent. Through hydrochloric acid leaching, the leaching rates of phosphorous and RE are both high so solvent extractions can be used to separate phosphorous from RE in the solution. |
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