Acidophilus bacteria desulfurization column leaching is used to explore the effect of the desulfurization of metal sulfide ore and the feasibility of inhibiting the spontaneous combustion. Uniform design is used in the experiment in which factors investigated include initial pH value, liquid arrangement intensity and average particle size of ore. Regression analysis of desulfurization rates by liquid shows that the liquid arrangement intensity influences the desulfurization most, the ore particle size less, and the pH value the least. Liquid arrangement intensity and pH are positively correlated with the desulfurization rate, but ore particle size negatively. The result of SEM shows that the sulfur content of the ore surface is reduced to 15% or less from about 43%. The ore flammability is lower, with the surface desulfurization rate being 65%.

bacterial desulfurization  /  path coefficient analysis  /  sulfide ore