Title:
METHOD FOR SEPARATING AND RECOVERING COPPER AND IRON FROM SCRAP MIXED WITH COPPER AND IRON
Document Type and Number:
Japanese Patent JP3730606
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method with which copper can be reused as a melting raw material by easily and efficiently separating and recovering the copper and the iron from scrap mixed with the copper and the iron through melting process and further, a little amount of noble metal used for various kinds of products treated as the scrap together with the copper can be separated and recovered.
SOLUTION: In this method, when the scrap mixed with the copper and the iron is melted in non-oxygen atmosphere, Fe-P-Cu ternary system molten material is formed and also, sufficient amount of the phosphorus (P) for separating molten iron phase and molten copper phase, is added before melting and/or during melting. Further, melting temperature is lowered by adding carbon (C) and also, the solubility of the copper in the molten iron phase and the solubility of the iron in the molten copper phase can be reduced.
Inventors:
Tsutomu Yamaguchi
Takeichi Takeda
Takeichi Takeda
Application Number:
JP2002244446A
Publication Date:
January 05, 2006
Filing Date:
August 26, 2002
Export Citation:
Assignee:
Japan Science and Technology Agency
International Classes:
C22B7/00; C21B11/00; C22B9/02; C22B11/02; C22B15/00; (IPC1-7): C22B7/00; C21B11/00; C22B9/02; C22B11/02; C22B15/00
Domestic Patent References:
| JP2001279339A | ||||
| JP11293350A |
Other References:
Mitsutaka HINO et al,Phase Diagram and Physico-Chemical Properties of Metal Produced in Melting Furnace for Ash from Muni,International Symposium on Global Environment and iron and Steel Industry Proceedings,China Science and Technology Press,1998年,pages 234-239
山口勉功ら,Fe-Cu-C系2液相分離による低品位銅スクラップからの銅の濃縮,資源と素材,1997年,Vol.113,No.12,p.1110-1114
山口勉功ら,Fe-Cu-C系2液相分離による低品位銅スクラップからの銅の濃縮,資源と素材,1997年,Vol.113,No.12,p.1110-1114
Attorney, Agent or Firm:
Yoshiyuki Nishi
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