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Effect of Initial pH and Ore-Pulp Ratio on Bioleaching of A Sandstone Type Uranium Deposit
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Zixian HUANG1, 2, Chunguang LI1, 2, Zhenzhong LIU1, 2, Yaocai ZHANG1, 2, Yongmei LI1, 2, Yizi TANG1, 2
Hydrometallurgy of China | 2025, 44(6) : 724 - 734
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Hydrometallurgy of China | 2025, 44(6): 724-734
• Experiment Research •
Effect of Initial pH and Ore-Pulp Ratio on Bioleaching of A Sandstone Type Uranium Deposit
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Zixian HUANG1, 2, Chunguang LI1, 2, Zhenzhong LIU1, 2, Yaocai ZHANG1, 2, Yongmei LI1, 2, Yizi TANG1, 2
Affiliations
  • 1.College of Resources Environment and Safety Engineering, University of South China, Hengyang　421001, China
  • 2.R&D Center of Radioactive Waste Treatment, Disposal and Modeling, University of South China, Hengyang　421001, China
Published: 2025-12-20 doi: 10.13355/j.cnki.sfyj.2025.06.003
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During the biological leaching process, leaching microorganisms are relatively sensitive to environmental factors such as the initial pH and ore-pulp ratio. Taking a sandstone type uranium deposit in Inner Mongolia as the research object, by analyzing the pH, REDOX potential (Eh), iron ion concentration and uranium leaching rate of the leaching solution, the influence of the initial pH and ore-pulp ratio on the uranium leaching rate was discussed. The results show that when the initial pH is 1.4 and the ore-pulp ratio is 10%, the biological leaching effect of uranium is the best, and the uranium leaching rates reach 95.63% and 94.22%, respectively. An appropriate initial pH can reduce the formation of iron precipitation and maintain the activity of mixed Acidithiobacillus ferrous oxide (At.f) and Thiobacillus thiooxidans (T.t). The optimized ore-pulp ratio can enhance the mass transfer efficiency and promote leaching. The research can provide an important basis for optimizing the bioleaching process of sandstone-type uranium ores, and the research results can offer theoretical basis for the enhanced bioleaching of sandstone-type uranium ores in Inner Mongolia region.

mixed acidophilic bacteria  /  initial pH  /  ore-pulp ratio  /  biological leaching  /  sandstone-type uranium ore
黄子贤, 李春光, 刘振中, 张耀财, 李咏梅, 唐逸姿. 初始pH与矿浆比对某砂岩铀矿生物浸出的影响. 湿法冶金, 2025 , 44 (6) : 724 -734 . DOI: 10.13355/j.cnki.sfyj.2025.06.003
Zixian HUANG, Chunguang LI, Zhenzhong LIU, Yaocai ZHANG, Yongmei LI, Yizi TANG. Effect of Initial pH and Ore-Pulp Ratio on Bioleaching of A Sandstone Type Uranium Deposit[J]. Hydrometallurgy of China, 2025 , 44 (6) : 724 -734 . DOI: 10.13355/j.cnki.sfyj.2025.06.003
Appendix
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Year 2025 volume 44 Issue 6
113
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Article Info
doi: 10.13355/j.cnki.sfyj.2025.06.003
  • Receive Date：2025-05-23
  • Online Date：2026-09-28
  • Published：2025-12-20
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  • Received：2025-05-23
Funding
Affiliations
    1.College of Resources Environment and Safety Engineering, University of South China, Hengyang　421001, China
    2.R&D Center of Radioactive Waste Treatment, Disposal and Modeling, University of South China, Hengyang　421001, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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