EFFICIENT METHOD FOR COLLECTION OF PLATINUM-GROUP ELEMENT FROM COPPER-IRON SCRAP

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Disclosed is a means for efficiently collecting a platinum-group element by efficiently enriching the platinum-group element in a molten copper phase produced from a copper-iron scrap containing the platinum-group element. Specifically disclosed is a method comprising : melting a copper-iron scrap containing a platinum-group element to produce a molten material; separating the molten material into two phases, i.e., 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 1 mass% or more, wherein carbon contained in the molten iron phase is derived from a carbon source contained in the molten material; isolating the two phases from each other and collecting the molten copper phase; and separating and collecting the platinum-group element dissolved in the molten copper phase from the molten copper phase. The copper-iron scrap may contain the rare metal. Alternatively, a member containing the rare metal may be added to the molten material. It is preferred that the total concentration of the rare metal contained in the molten copper phase be 1 mass% or more.