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In the solvent extraction phase of the process, incoming pregnant leach solution (PLS) is concentrated and purified, and a pure electrolyte is then used in electrowinning to produce chemically and physically high quality copper cathodes.
For nearly 30 years, Outotec has been developing its wide range of solvent extraction technologies, delivering both equipment and processes to its customers in the metals processing industries. This long history of dedicated research and development began in response to increasing demands for lower operation and investment costs, together with more reliable and stable production where health & safety issues are given high priority in plant design.
The results have been impressive, and today the plants that use our groundbreaking Vertical Smooth Flow (VSF™) mixer-settler technology are among the most profi table in the world. Since launching the VSF™ technology for copper applications more than a decade ago, Outotec has gained a leading market share of new copper solvent extraction capacity.
The main benefit of the VSF™ technology is that minimal entrainment levels can be achieved without compromising reaction and settling rates. This brings value in terms of
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Low investment costs, due to smaller settler sizes and less organic inventory
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Low operating costs, due to low copper and reagent losses
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Flexibility, enabling constant cash flow during varying leaching conditions
Outotec VSF™ solvent extraction packages include
- Dispersion Overflow Pumps (DOP®)
- SPIROK® mixers
- Outotec settlers with DDG®
fences and launders
- Loaded organic tank, rich
electrolyte after settler as
coalescer units
- Organic treatment units
For further information, please contact
 hydro(at)outotec.com
 Brochure
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