• Volume 33 Issue 4
    Jul.  2021
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    WANG Hong-jiang, WU Ai-xiang, LUO Fei-xia, ZHANG Xu, CHEN Jia-sheng, SHI Liang-gui. Experimental study on inhibiting the spontaneous combustion of sulfide ores by bacteria desulfurization[J]. Chinese Journal of Engineering, 2011, 33(4): 395-399. doi: 10.13374/j.issn1001-053x.2011.04.001
    Citation: WANG Hong-jiang, WU Ai-xiang, LUO Fei-xia, ZHANG Xu, CHEN Jia-sheng, SHI Liang-gui. Experimental study on inhibiting the spontaneous combustion of sulfide ores by bacteria desulfurization[J]. Chinese Journal of Engineering, 2011, 33(4): 395-399. doi: 10.13374/j.issn1001-053x.2011.04.001

    Experimental study on inhibiting the spontaneous combustion of sulfide ores by bacteria desulfurization

    doi: 10.13374/j.issn1001-053x.2011.04.001
    • Received Date: 2010-07-12
      Available Online: 2021-07-30
    • Publish Date: 2021-07-30
    • Bacterial desulfurization and column leaching were used to decrease the content of sulfur in sulfide ores' surface to a extreme low level even below the critical value so that the spontaneous combustion tendency of the desulfurized ores weakened.The experiment results show that the maximal desulfurization rate can reach 61.82% after 44 d treatment,and gradually increases with prolonging time.Based on the analysis of the spontaneous combustion tendency of sulfide ores,it is indicated that the oxidation weight gain rate of sulfide ores in 5 d decreases from 2.044% to 0.902% while the ores' spontaneous combustion point increases from 209.6℃ to 319.8℃.As a result,the spontaneous combustion tendency downgrades from level Ⅰ to level Ⅲ and the risk of spontaneous combustion is lowered.

       

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