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| Acidity Comparison Test on Acidified Uranium-bearing Residue |
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Received:August 31, 2012
Revised:September 04, 2012
Accepted:September 05, 2012
Published Online:February 19, 2013
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| DOI：10.3969/j.issn.1007-7545.2013.03.009 |
| KeyWord:uranium; acidification; acidity comparison; leaching rate; acid consumption rate |
| Author | Institution |
| zhaozhibin |
东华理工大学水资源与环境工程学院 |
| LI Jiang |
东华理工大学 |
| SUN Zhan-xue |
东华理工大学 |
| WANG Xue-gang |
东华理工大学 |
| SHI Wei-jun |
东华理工大学 |
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| Abstract: |
| The uranium-bearing residue from a uranium bioleaching column test was first acidified and aged with 100, 150, 200 g/L sulfuric acid, and then was sprayed for 20 hours per day in column with the spraying rate of 5%~10%. The results show that after two rounds of acidification and leaching for 38 days, the total uranium recovery rates are 22.2%, 28.1% and 33.8%, respectively. The uranium leaching rates calculated from slag are 29.55%, 32.96% and 40.03%, respectively, and the acid consumption rates are 0.23%, 0.62% and 0.85%, respectively. The acidity of 200 g/L is recommended for acidification for the better economic benefits. |
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