Excelling purification chemistries

With extensive capabilities and experience, Metso is committed to provide a wide range of efficient and environmentally sustainable precipitation processes for the purification of a wide range of metals.
Environment friendly

Sustainable process with minimal use of additive agents

Diverse solutions

Wide array of technologies for recovery of metals

Lower costs

Optimized process and low operating costs

Why solution purification process is needed

The presence of impurity metal ions would degrade the product quality and greatly decrease the efficiency of the electrowinning process, increasing the production cost​. In some cases, the existence of impurity metal ions even threatens the production safety.​ Therefore, the impurities remaining after leaching must be purified to certain ranges before electrowinning​

Introducing Metso Precipitation process

Introducing Metso Precipitation process

Metso solution purification and metal recovery technologies have been successfully implemented worldwide​. We provide sulfide precipitation, oxidative precipitation, neutralization, cementation, and reduction technologies​. Our precipitation and recovery technology can be fully integrated into the process. We strive to provide environmentally sustainable precipitation processes with the minimal consumption of additive agents.

Metso provides processes for the recovery of precious metals such as silver, gold and platinum.

Key benefits:

  • Environmentally sustainable precipitation processes with minimal consumption of additive agents
  • High product yield
  • Fast kinetics resulting in compact reactor size
  • Small footprint
  • Low operating costs
  • Highly selective
  • High filtering properties
  • Process control and optimization
  • Energy efficiency

Effective solution purification and recovery technologies provided by Metso

  • Iron removal

  • Sulfide percipitation

  • Cementation

  • Neutralization

  • Precursor precipitation

  • Hydroxide precipitation

Precipitation comprehensive scope of supply

Metso offers optimised solutions and complete plants for the production of high-quality copper cathodes through innovative leaching, solvent extraction and electrowinning technologies. Metso technology package for solvent extraction plants may contain basic and/or detailed engineering as well as proprietary and key equipment supply.





Dual Media (DM) filter

Activated Carbon (AC) filter

OKTOP® reactors






DispersionSense (view inside SX settlers)

Generic and tailored Geminex™

Courier analyzer

Cooling tower







Flowsheet development and studies

Kinetic batch testing of leaching

Pilot testing

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


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