Flotation pH Control
Selecting a more suitable gas to modify the mineral surface and collector-mineral interactions, resulting in an increase of ore grade or a greater recovery of metal. Nitrogen prevents oxidation of the collectors in molybdenite flotation, while oxygen or ozone changes the hydration state of mineral surfaces. Air Liquide has patented the use of oxygen/ozone for sulfide mineral flotation. Carbon dioxide is used to reduce the pH of pulp contaminated with paste backfill and can help flotation process to be more efficient.
Equipment for industrial gases
Carbon Dioxide injection and dissolution skid