|
| Variation of Uranium Minerals in Bioleaching of Mine 745 |
|
Received:October 01, 2013
Revised:October 14, 2013
Accepted:October 14, 2013
Published Online:March 31, 2014
|
| View Full Text View/Add Comment Download reader |
| DOI：10.3969/j.issn.1007-7545.2014.04.011 |
| KeyWord:uranium minerals; electronic microprobe analysis; microbial leaching; mine 745 |
| Author | Institution |
| ZHAO Xing-bo |
东华理工大学地球科学学院;East China Institute of Technology |
| SUN Zhan-xue |
东华理工大学地球科学学院;East China Institute of Technology |
| HU Bao-qun |
东华理工大学地球科学学院;East China Institute of Technology |
| WANG Zhi-hua |
河南省地矿局第五地质勘查院;The No Institute of Geological-Exploration of Henan |
| WANG Yun |
江西省煤田地质勘察研究院;Jiangxi Exploration and Research Institute of Coal Geology |
|
| Hits: 2704 |
| Download times: 2603 |
| Abstract: |
| Electronic microprobe technique was applied to analyze Mine 745 uranium ores and tailings in terms of their mineralogy and chemistry, and according variations before and after bioleaching. The results show that uranium minerals from the mine are mainly consisted of pitchblende, with a small portion of coffinite, uranothorite and brannerite. Those uranium minerals species mainly present themselves in occurrences of irregular dendritic or thin vein, granular, star-shape in mineral fractures, with some wrapped in other minerals. The particle size is relatively big ranging from 10 μm to 100 μm above. After bioleaching, the uranium content in tailings evidently reduce, although the species, mainly presented inside the quartz grains with the size of 1~2 μm, remain the same. The results indicate that pitchblende and uranothorite in fissures are easily leached while those wrapped in quartz grains are hard to leach. |
| Close |
|
|
|