A stable copperCopper supplySupply is needed to meet the increasing copper demandCopper demand, which is expected to continue growing in the future. Moreover, a copperCopper refiningRefining process with a lower environmental burden is required. JX Advanced MetalsMetal Corporation aims to establish a stable copperCopper supplySupply system and lower the environmental burden of copper productionCopper production. To achieve this goal, we are developing “Green Hybrid SmeltingSmelting” process that maximizes the processingProcessing of secondary raw materialsSecondary raw material by efficiently utilizing the flash smeltingFlash smelting process. Notably, impuritiesImpurity such as nickelNickel, antimonyAntimony, and bismuthBismuth contained in the secondary raw materialsSecondary raw material deteriorate the quality and efficiencyEfficiency of copper productionCopper production during the electrorefining processElectrorefining process. Herein, we reinforced the capacity of nickelNickel, antimonyAntimony, and bismuthBismuth removal at the Saganoseki and Hitachi Refinery. The series of process reinforcement allows us to maintain the high quality of copperCopper during electrorefiningElectrorefining, even when the impurityImpurity load increases. We plan to further reinforce our impurity removalImpurity removal capacity to increase the ratio of the secondary raw materialsSecondary raw material in the feed to 50% by 2040.