CAJ | 학술논문

为了探索在微生物存在的条件下氧化锰和硫化矿共同浸出的特点，进行了氧化亚铁硫杆菌在好氧和厌氧条件下对FeS2-MnO2-H2SO4体系的催化浸出实验研究。结果表明，在好氧条件和厌氧条件下，氧化亚铁硫杆菌均可以催化FeS2-MnO2- H2SO4体系的浸出。好氧条件下利于FeS2的浸出，浸出36 h时，在MnO2：FeS2质量比为1：1、5：1、6：1时的浸出率分别为：25.34%、82.89%和82.58%。厌氧条件下，利于MnO2的浸出，浸出36 h时，在MnO2：FeS2质量比为1：1、5：1、6：1时的浸出率分别为：87.76%、85.35%和75.09%。浸出机理是氧化亚铁硫杆菌催化铁离子在二价和三价之间的循环转化，根据实验结果提出了好氧和厌氧条件下，FeS2-MnO2-H2SO4体系的两矿反应模型。
위료탐색재미생물존재적조건하양화맹화류화광공동침출적특점，진행료양화아철류간균재호양화염양조건하대FeS2-MnO2-H2SO4체계적최화침출실험연구。결과표명，재호양조건화염양조건하，양화아철류간균균가이최화FeS2-MnO2- H2SO4체계적침출。호양조건하리우FeS2적침출，침출36 h시，재MnO2：FeS2질량비위1：1、5：1、6：1시적침출솔분별위：25.34%、82.89%화82.58%。염양조건하，리우MnO2적침출，침출36 h시，재MnO2：FeS2질량비위1：1、5：1、6：1시적침출솔분별위：87.76%、85.35%화75.09%。침출궤리시양화아철류간균최화철리자재이개화삼개지간적순배전화，근거실험결과제출료호양화염양조건하，FeS2-MnO2-H2SO4체계적량광반응모형。
In order to explore the co-leaching performance of manganese oxide and sulfide ore in the presence of microorganisms, aerobic and anaerobic leaching experiments with Thiobacillus ferrooxidans were studied on a FeS2-MnO2-H2SO4 system. The results show that Thiobacillus ferrooxidans can catalyze the FeS2-MnO2-H2SO4 leaching under both aerobic and anaerobic conditions. However, FeS2 was more easily leached under aerobic conditions. The FeS2 leaching rate is 25.34%, 82.89%and 82.58%when proportions of 1:1, 5:1 and 6:1 are used after 36 h respectively. MnO2 was more easily leached under anaerobic conditions, and the MnO2 leaching rate is 87.76%, 85.35% and 75.09% when proportions of 1:1, 5:1, 6:1 are used after 36 h respectively. The leaching mechanism is the transformation between Fe2+ and Fe3+ catalyzed by Thiobacillus ferrooxidans. Based on the experimental results under aerobic and anaerobic conditions, a FeS2-MnO2-H2SO4 mineral reaction model is proposed.