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| Uranium Recovery from Uranium Mineral Bio-Heap Residues with Microbial Column Leaching Process |
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Received:May 10, 2012
Revised:May 10, 2012
Accepted:May 21, 2012
Published Online:October 23, 2012
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| DOI：10.3969/j.issn.1007-7545.2012.11.011 |
| KeyWord:uranium; bio-heap residues; microbial column leaching; spray leaching; recovery |
| Author | Institution |
| LiJiang |
东华理工大学 |
| Liu Yajie |
东华理工大学 |
| Che JiangHua |
东华理工大学 |
| Rao Jun |
东华理工大学 |
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| Abstract: |
| Column bio-leaching tests under different spraying conditions on the uranium mineral bio-heap residues were conducted with bio-heap leaching process. The uranium content of the residues was 0.014%. The results show that the leaching rate is 50% after a leaching period of four months with ratio of liquid to solid of 1.74 and one spray for two-days, while the leaching rate is 28.6% with ratio of liquid to solid of 0.94 and one spray for four-days. This leaching process with small and interval spray has the advantages of low cost, efficient uranium recovery from the bio-heap residues and less environmental pollution. |
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