PYRITE DESULFURIZATION BY WET OXIDATION IN ALKALINE SOLUTIONS

@inproceedings{Chuang1980PYRITEDB,
  title={PYRITE DESULFURIZATION BY WET OXIDATION IN ALKALINE SOLUTIONS},
  author={K. C. Chuang and M.-C. Chen and Raymond Thomas Greer and Richard Markuszewski and Yang Sun and Thomas D. Wheelock},
  year={1980}
}
Particles of iron pyrites can be desulfurized by leaching them with a hot alkaline solution containing dissolved oxygen under pressure. As the reaction proceeds sulfur is extracted largely as soluble sulfates, and a shell of iron oxide is formed around a shrinking core of pyrite. The overall rate of the reaction seems to be controlled by diffusion of dissolved oxygen through the shell of iron oxide.