Unrivaled leader in recoveries

Metso’s premier and well-known electrowinning technology with an impressive range of equipment package is specially designed for high performance and producing sustainable, cost-efficient & high-grade cathode
Premier technology

Well known and proven technology for producing high-grade cathodes from copper sulfate solutions received from solvent extraction

Extensive portfolio

One-stop-shop for electrowinning plant deliveries with proprietary and key equipment


Minimized emissions and maintenance cost

The electrowinning process

Electrowinning is a process used to recover metals from concentrated solutions by applying a voltage across electrodes immersed in a concentrated solution. Electrowinning is commonly used to recover base metals such as copper, zinc, nickel, and cobalt.

Introducing Metso electrowinning technology

Introducing Metso electrowinning technology

Metso’s offering for copper and zinc electrowinning tankhouses comprises pre-engineered solutions, key equipment, and services to ensure superior process performance, increased safety, and minimized environmental impact. Our continuous research and development work on tankhouse equipment and processes, as well as our own production experience, have led to a range of impressive new technology developments, specially designed for high performance and cost-efficient cathode production. Environmental protection and occupational health and safety are important aspects of our development work.

Core benefits:

  • Production of high purity cathode
  • Improved safety
  • Small and compact footprint
  • Minimized cathode replacement costs
  • Recycling of acid
  • Occupational and environmental health and safety
  • Lower operating cost

Electrowinning comprehensive scope of supply

Metso is the right partner for building an efficient, productive, and safe electrowinning plant with optimized cathode and cell sizes, current densities, busbars, and an automatic material flow of cathodes. We offer full technology and equipment package with proprietary of whole electrowinning flowsheet.




Metso® Permanent Cathode

Metso’s cell and anode designs

DoubleContact™ busbar system

Robotic Cathode Stripping Machine

Metso® Tankhouse Cranes

Acid mist capturing system with cell hoods

Cooling towers for zinc

CellSense™ cell voltage monitoring

Proscon process control system


Main Busbar systems



IR camera short circuit detection




Flowsheet development and studies

Pilot testing


Technical services

Electrowinning comprehensive scope of supply
Read the customer case: Maximizing ROI at Grupo México’s Buenavista ESDE III plant


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