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Solvent extraction and electrowinning

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Solvent extraction and electrowinning (SX/EW) is a two-stage metallurgy process that first extracts and upgrades copper ions from low-grade leach solutions into a concentrated electrolyte (Solvent extraction), and then deposits pure copper onto cathodes using an electrolytic procedure (electrowinning).

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electrowinning is a prosses that you can take low grade ore and and transfer it to liquid and then back to copper sheets. The prosess is not costly and can be produced for a lot less than open pit mining

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