Available technologies

Novel control for froth flotation cells

Reference number: 4325


Mineral froth flotation is the largest tonnage industrial separation process in the world used for extracting valuable mineral contents in mining. A new simple, low cost, retro-fittable and field proven control system developed by engineers from Imperial Collage London, provides incremental improvement in productivity of the process. Field tests conducted in the prototype systems implemented in more than 20 sites around the world has also confirmed the significant improvement.



  • Process optimisation to increase yield and output
  • Rapid payback due to low cost and retro-fittable installation
  • Full automation and adaptation to changing conditions during the operation
  • Minimising operational costs by water and energy efficiency management
  • Controlling multiple flotation cells in parallel or series
  • Eliminate the staff costs of manually operated control systems
  • Process control
  • Instrumentation
  • Mineral separation
  • Water water treatment
  • Paper recycling


The technology developed is a control method that is able to increase the quantity of mineral recovered by maximising air recovery using the relationship between airflow and air recovery. Using the data from the height and velocity of the froth overflowing, the length or perimeter of the cell and the air flow rate into the cell, air recovery is monitored, measured and controlled non-intrusively. The parameters are measured or calculated by the help of image analysis techniques, which improves performance with respect to both the grade and recovery of the concentrate compared with known methods.

Download the datasheet


Valeska Gonzalez

Industry Partnerships and Commercialisation Executive, Engineering


+44 (0)20 7594 6893

Contact us about this technology

Subscribe for Licensing Opportunities updates
Keep up to date with new technologies and licensing opportunities coming out of Imperial College London