湿法冶金2025，Vol.44Issue(6)：724-734,11.DOI:10.13355/j.cnki.sfyj.2025.06.003
初始pH与矿浆比对某砂岩铀矿生物浸出的影响
Effect of Initial pH and Ore-Pulp Ratio on Bioleaching of A Sandstone Type Uranium Deposit
摘要
Abstract
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.关键词
混合嗜酸菌/初始pH/矿浆比/生物浸出/砂岩型铀矿Key words
mixed acidophilic bacteria/initial pH/ore-pulp ratio/biological leaching/sandstone-type uranium ore分类
矿业与冶金引用本文复制引用
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[J].湿法冶金,2025,44(6):724-734,11.基金项目
国家自然科学基金资助项目(52204139) （52204139）
湖南省自然科学基金资助项目(2024JJ5330). （2024JJ5330）
