The bioleaching of vanadium-bearing stone coal by mixed heterotrophic bacteria was studied. And the detection methods of X-ray fluorescence( XRF),X-ray diffraction( XRD) and Fourier transform infrared spectroscopy( FTIR) were used to analyze the mineral structure of ore stone coal and the residue. The results showed that the ions of vanadium-bearing stone coal could be leached out by mixed heterotrophic bacteria. The highest concentration of Al,Si and V were 14. 63,55. 14,and 26. 95 mg·L~(-1) after 29 d,res...