Concentration method of platinum to molten copper phase to recover platinum in copper iron scrap

摘要

The present invention provides a means for efficiently recovering a platinum group element by efficiently concentrating it in a molten copper phase obtained from copper-iron scrap containing a platinum group element. It is a method comprising melting copper-iron scrap containing a platinum group element, forming the melt into two liquid phases, a molten copper phase containing at least one rare metal selected from the group consisting of Nd, Pr, and Dy and a molten iron phase having a carbon concentration of at least 1 mass %, with the carbon contained in the molten iron phase being derived from carbon contained in the melt, separating the two liquid phases and recovering the molten copper phase, and separating and recovering from the molten copper phase a platinum group element dissolved therein. The copper-iron scrap may contain a rare metal, or a member containing a rare metal may be added to the melt. The total concentration of rare metals contained in the melt is preferably at least 1 mass %.