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| Effect of different types of pyrite on uranium bioleaching behavior |
| Received:September 12, 2020 Revised:September 16, 2020 |
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| DOI：doi：10.3969/j.issn.1007-7545.2021.01.009 |
| KeyWord:Acidithiobacillus ferrooxidans; pyrite; low-sulfur uranium ore; enhanced leaching |
| Author | Institution |
| GE Yu-bo |
东华理工大学核资源与环境国家重点实验室 |
| ZHOU Zhong-kui |
东华理工大学核资源与环境国家重点实验室 |
| FANG Xiao-qi |
核工业二九〇研究所;核工业二九〇研究所 |
| SUN Zhan-xue |
东华理工大学核资源与环境国家重点实验室 |
| WANG Ting-jian |
东华理工大学核资源与环境国家重点实验室 |
| WANG Shi-jun |
东华理工大学核资源与环境国家重点实验室 |
| WANG Si-yu |
东华理工大学核资源与环境国家重点实验室 |
| LIAO Bing-you |
东华理工大学核资源与环境国家重点实验室 |
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| Abstract: |
| In order to enhance extraction of uranium from low-sulfur uranium ore, bioleaching combined with different type pyrites were used to improve uranium leaching rate. The results show that pH value of pyrite system is lower than that of leaching system without pyrite addition, which provides a relatively good bioleaching environment. Fe2+ can be oxidized rapidly and Eh value rises severely by adding pyrite. Compared with blank control group, leaching rate of uranium in pyrite system rises obviously by 1.73%—5.53%. SEM analysis results show that jarosite precipitation on surface of uranium ore is obviously reduced by adding pyrite. |
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