Metso Full portfolio FrothSense+
Take flotation optimization to the next level with the latest technology and capability. This new system utilizes new capabilities with AI neural network, multiple regions of interest and froth height measurement.
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  • Combines the best features of two legacy products: FrothSense™ and VisioFroth™
  • New and redesigned software, hardware and capabilities
  • Optimized algorithms and parallel processing for simultaneous outputs
  • Improved resolution & lighting for better identification of fine froth
  • Uses artificial intelligence (AI) with deep learning algorithms to detect flotation properties
  • Easy to integrate with control and reporting systems
  • Includes live camera feed (control room & remote)
FrothSense Sensor System
  • Live camera stream for operators
  • Froth velocity and direction
  • Bubble size distribution
  • Stability and collapse rate
  • Cell lip visible warning
  • Bubble loading
  • Color
  • Brightness
  • Texture

NEW features 

  • Multi-zones analysis for multiple regions of interest
  • Froth properties analysis with AI / deep learning
  • Froth height measurements

Enabling flotation process optimization

How can FrothSense+™ take your flotation optimization to the next level?

  • A foundation and key enabler for process optimization, digital twinning and unmatched performance
    • Froth speed control
    • ExactLevel control
    • Flotation optimizer
  • Proven, tangible and measurable benefits for beneficiation circuits
  • Analytics and remote operations
  • Easy integration to control and reporting systems
  • Industry leading services covering the entire global, with a presence in more than 50 countries

Flotation upgrades

The trend towards larger flotation cell volumes, which is in part being driven by the increasing pressure on concentrators to reduce CAPEX and OPEX costs, has resulted in an increasing need to be able to control the cell-specific mass pull – the velocity at which concentrate is removed from the cell. A smaller froth surface area to cell volume ratio can result in your process being more sensitive to material feed changes and ore grades, among other factors. Traditionally, flotation plant operators have relied on visual assessments of froth appearance when making operational decisions. As operators’ interpretations can vary greatly from shift to shift, this can lead to inconsistent process results.

Metso  FrothSense+™ – one of the few non-invasive froth stability measurement devices available – solves this challenge by providing accurate data around the clock to advanced process control systems such as Metso ACT, which can be utilized to maintain a steady mass pull. It can work in conjunction with other Metso control solutions to maintain steady KPIs and generate data that can be used by your engineering team to maintain process reliability and support continuous improvement.

The system measures several essential froth properties, including speed, direction, bubble size, stability, and color, while also providing statistical data related to these variables. The combination of measured properties and on-line analyzer assays allows you to develop efficient and robust strategies for advanced flotation process control using a system such as Metso ACT. Metso FrothSense also provides high-quality live video streams from the froth cameras directly to the control room.


  • Froth imagers
  • Connection cabinets
  • Analysis server
  • Metso  FrothSense+™ and Metso ACT software license
  • Automatic froth speed control software
sense series
Enable optimization through our Sense series
With more than a 50-year track record in digital innovation, Metso’s unmatched intelligent instruments portfolio enables industry leading process optimization​.

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Reaching your sustainability targets?
Find out how our flotation, thickener and analyzer services help to achieve your sustainability targets



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