A novel mineral flotation process using Thiobacillus ferrooxidans.

  title={A novel mineral flotation process using Thiobacillus ferrooxidans.},
  author={Takashi Nagaoka and Naoya Ohmura and Hiroshi Saiki},
  journal={Applied and environmental microbiology},
  volume={65 8},
Oxidative leaching of metals by Thiobacillus ferrooxidans has proven useful in mineral processing. Here, we report on a new use for T. ferrooxidans, in which bacterial adhesion is used to remove pyrite from mixtures of sulfide minerals during flotation. Under control conditions, the floatabilities of five sulfide minerals tested (pyrite, chalcocite, molybdenite, millerite, and galena) ranged from 90 to 99%. Upon addition of T. ferrooxidans, the floatability of pyrite was significantly… CONTINUE READING