Sampo™ Cell

Unlock more value from every particle

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The Sampo™ Cell is Metso's next-generation coarse particle flotation technology, designed to unlock more value from every particle. By enabling efficient recovery at coarser particle sizes with a simplified flowsheet, it helps mining operations increase recovery, improve plant capacity, and reduce energy and water consumption.

Flotation is critical to your operation – what if it could perform even better?

Reduced energy consumption

Coarser grinding (P80 ~250 to 500 µm) can reduce grinding energy by up to 30%

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Over 60% higher capacity

Early gangue rejection of over 50% of mass enables plant capacity increases of over 60%

Technical paper

Up to 30% lower operating costs

Simplified coarse particle flotation circuits can reduce operating costs by up to 30%

Recover more value

Recovers particles down to ~1% surface exposure, extending recovery into coarser size ranges

Technical paper

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Industry challenges

Mining operations are facing increasing pressure as ore grades decline and the demand for higher plant throughput grows. At the same time, complex flotation circuits contribute to higher capital and operating costs, while energy-intensive grinding and limited water availability place additional strain on operations.

Maintaining high recovery across the full particle size range remains a challenge, with up to 40% of valuable particles often reporting to tailings, reducing overall plant recovery.

Introducing the Sampo™ Cell

Simplifying the future of coarse flotation

The Sampo™ Cell is Metso's next-generation coarse particle flotation solution, designed to recover valuable minerals at significantly coarser particle sizes than conventional flotation. Using an innovative froth-feeding approach, slurry is introduced directly into the froth under low-turbulence conditions, allowing coarse particles to remain attached to air bubbles and be recovered efficiently. By rejecting gangue earlier in the process and simplifying the flotation circuit, the Sampo™ Cell helps increase recovery, improve plant capacity, and reduce energy and water consumption.

How it works

Slurry is gently introduced directly into the froth under low-turbulence conditions, minimizing particle detachment and enabling efficient recovery of coarse, partially liberated particles.

An externally generated gas–liquid aeration system provides ultra fine bubbles and a stable froth environment. Additionally there is no need for without feed pre-classification or fluidization water.

This expands the recoverable particle size range, helping unlock more value from every ton of ore while improving plant efficiency and sustainability.

Designed for simple integration

The Sampo™ Cell uses standard flotation controls and instrumentation, it integrates seamlessly into existing plant automation systems. It also produces concentrate and tailings slurries with similar solids densities to conventional flotation circuits, allowing straightforward downstream handling without additional dewatering stages.

The result is a simpler, more efficient coarse particle flotation solution that helps mining operations increase recovery, improve throughput, reduce operating costs, and support more sustainable mineral processing.

A sustainable solution

Up to 40% less water

Reduces process water consumption by eliminating the need for feed classification water systems and fluidization water in coarse particle flotation (CPF) circuits. By rejecting gangue early in the process and operating at high solids concentrations, the Sampo™ Cell reduces the mass reporting to conventional flotation while minimizing the amount of water added to the circuit.

Up to 30% less energy

Enables coarser grinding by rejecting gangue earlier in the flotation circuit, reducing the amount of material that requires further processing. This lowers grinding energy demand, helping decrease overall plant energy consumption while improving processing efficiency.

Up to 25% less carbon

Helps reduce embedded carbon by lowering grinding energy consumption, minimizing the number of installed equipment units, and reducing the pumping and infrastructure required for the flotation circuit. The result is a smaller overall plant footprint and a lower lifecycle carbon impact.