A prototype subproject was introduced to deliver a proof of concept of efficient leaching of the metal concentrates and the recovery of zinc. Copper and zinc are simultaneously leached in an alkalic environment followed by purification of copper and zinc into its pure copper and zinc solutions. Once pure copper and zinc electrolytes have been obtained, copper cathodes can be produced and zinc can be sold as zinc sulphate solution. The zinc sulphate can alternatively be crystalized towards zinc sulphate crystals.
- Prototype tested and fully functioning to prove copper and zinc recovery into marketable products.