Equipment and method for leaching copper, and method for producing electrolytic copper using said equipment and method

Equipment for leaching copper, the equipment comprising a reactor for a leaching reaction and an oxidation-reduction potential controller,

• the reactor being configured to be provided with a leaching solution containing iodine and iron and being configured to be capable of being tightly sealed during the leaching reaction,
• the oxidation-reduction potential controller configured to control an oxidation-reduction potential of the leaching solution during the leaching reaction to 500 mV or higher, based on Ag/AgCl reference, by controlling an amount of oxidizing agent supplied to the reactor,
• wherein the leaching solution consists of a source of iron, a source of iodine, and optionally an oxidizing agent and/or a pH adjuster,
• wherein the source of iron is one or more chemicals selected from the group consisting of iron sulfate n-hydrate (Fe2(SO4)3·nH2O), iron (II) sulfate and iron (III) sulfate,
• wherein the source of iodine is one or more chemicals selected from the group consisting of elemental iodine molecule, and iodide,
• wherein the oxidizing agent is potassium permanganate, and
• wherein the pH adjuster is one or more chemicals selected from the group consisting of sulfuric acid (H2SO4), chloric acid (HCl), sodium hydroxide (NaOH), and potassium hydroxide (KOH).