Study on coal bio-magnetizing desulphurization

Coal Bio-desulphurization is a kind of new technology of coal resource effective and reasonable utilization. The bio-magnetizing technology was used in coal desulphurization bacterium Thiobacillus ferrooxidans cultivate in this paper, the effect of magnetization and non-magnetization culture on the growth of the desulphurization bacteria was investigated. Using the magnetizing cultivate China coal-series and non-coal-series Thiobacillus ferrooxidans to remove the pyrite sulfur from coal was studied. The result shows that the magnetizing environment growth for mineral chemical nutrition desulphurization bacterium Thiobacillus ferrooxidans has obvious promote role, magnetizing cultivate coal-series Thiobacillus ferrooxidans the maximum desulphurization rate of Thiobacillus ferrooxidans is 86.16% under bioleaching of 24 d and coal sample size of 0.075 mm, compared with non-coal-series Thiobacillus ferrooxidans desulphurization rate is 82.56%. The magnetizing cultivate coal-series Thiobacillus ferrooxidans has a better removing efficiency for pyrite from coal.