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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


Gas Management

Improving process performance

Local Support

Gas supply modes


On-site Production

Why Choose Us?

  • 01

    Industry leader

    Air Liquide is a leading global supplier of industrial gases such as oxygen, nitrogen and carbon dioxide, all essential to the mining industry.

  • 02

    Customisable solutions

    Our teams will work with you to identify the most appropriate, cost-effective, gas supply mode based on your purity, flow, volume and safety requirements.

  • 03


    Reliable and reproducible, Air Liquide gas solutions are compliant with the ever-evolving, stringent regulations.