Metso Full portfolio Flotation Process Assessment Service
Lost recovery in the flotation process results in lost revenue. Mines now need to process more complex ores making the operation of flotation circuits more difficult. Our Flotation Process Assessment service helps identify the optimum feed size, cell design, and operational parameters to maximize recovery and revenue.

Unique know-how and leading process tools to help you reach your sustainability targets

Gain process insight


Understand your flotation process and current production performance

Optimize processes


Identify areas of improvement with performance benchmarking

Maximize recovery


Evaluate disturbances, changing the feed ore type or changing the reagent addition rates

Improve profitability


Obtain a recommended upgrade path with ROI calculations

  • In-depth analysis and status of current production performance
  • Performance benchmarking against similar global operations
  • Identification of potential areas for improvements​
  • Recommended upgrade path with ROI calculations​


Metso Flotation process assessment

Lost recovery in the flotation circuit results in lost revenue

We start the optimization process by understanding your process goals. Our flotation experts can measure characteristics such as bubble size, bubble load, superficial gas rate (Jg), froth stability/transportation/depth to identify possible avenues for improving flotation cell performance.

The purpose of the Flotation Process Assessment is to gather in-depth information on the process that is not available from the automation systems or from the daily sampling to manage the information by looking for tailor-made solutions.

This information, along with detailed surveys and historical operating data are used in modeling and simulation techniques. These techniques, together with extensive industrial and consulting experience and database are used to evaluate existing or new operations, and highlight opportunities for improvement in performance.

Our Flotation Process Assessment covers the main disciplines of debottlenecking the flotation performance and can be tailored to focus on certain disciplines or all of them. Ideally, the assessment is conducted by selecting the most important information for future decision-making.  This service includes extensive site work as well as a deep back-office data analysis.

The models can also be used to evaluate disturbances to the circuit tonnage, changing the feed ore type or changing the reagent addition rates to the circuit. Once an improvement area is identified, we work with you on the design and implementation of the proposed changes.

The performance of the flotation circuit is often strongly influenced by feed size from comminution circuits. Metso experts can determine the relationship between grind size and the flotation grade-recovery performance for your operation and determine the optimum trade-off between grind size and flotation recovery. 

In flotation operations, the metallurgical team follows the daily production and is equipped to respond to any changes ​in the process to maintain concentrate quality at the specified level and maximize recovery.

Common questions during daily operations are:

  • “What are today’s recoveries and grades?”
  • “Are the mills running ​​with maximal throughput?”
  • “Are we within the budget?”

Questions that are often overlooked:

  • “What could be the recovery?”
  • “Where are we losing valuable minerals?”
  • “Is the equipment operating at its best?”


Our four step approach
Our four step approach


  • Recovery
  • Grinding performance
  • Reagent doses
  • Operational parameters
  • Mineral characteristics


  • Sampling is conducted on a focused flotation area
  • Samples are taken from the feed, tails, and concentrate
  • Process conditions are monitored in the control room​


  • Hot flotation tests identify the potential of current ore
  • Metallurgical performance in the laboratory and plant are compared and further analyzed using our HSC chemistry software


  • A report recommended solution, and value-adding process modifications are provided by our metallurgical experts​
Check the video
Our flotation process assessment helps identify the optimum feed size, cell design, and operational parameters to maximize recovery and revenue.

On-site visit (2-5 days)

  • Mechanical and process control evaluation
  • Process setup and performance evaluation
  • Improvement of potential analysis, including:
    • Sampling campaign and analysis of results
    • Kinetic laboratory hot flotation tests
    • Simulation and modeling with HSC(R) Chemistry
  • A written report, including:
    • Summary of findings
    • Recommendations for improvement
    • Realistic estimate of profitability improvement
How modernizations can get the most out of your existing flotation equipment
Discover how modernizing your current equipment can improve product recovery, plant availability and save operational costs in this webinar.

Value calculators & recommender tools

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