Copper enrichment of iron-base alloy scraps by phase separation in liquid Fe-Cu-P and Fe-Cu-P-C systems

Katsunori Yamaguchi, Takuya Ohara, Shigeru Ueda, Yoichi Takeda

研究成果: Article

6 引用 (Scopus)

抄録

A clear phase separation into liquid iron-rich and copper-rich alloys was observed when a mixture of Fe, Cu and P was melted in an alumina or carbon crucible at 1373 K. Since this phase separation is considered to be useful for recovering valuable copper from iron-base alloy scraps, the phase equilibrium in the Fe-Cu-P and Fe-Cu-P-C systems was investigated in this study. The effect of carbon to the phase separation was determined in the concentration range of phosphorous between 7 and 11 mass% at 1373 K. It was found that the addition of carbon enlarged the miscibility gap of the Fe-Cu-P system. Distribution ratios of some minor elements of Au, Ag, Pd, Pt, Rh, Cr, Mn and Ni between the liquid iron-rich and copper rich phases were also measured at 1373 K. It was found that Au, Ag and Pd were enriched in the copper-rich phase, while Pt and Mn were distributed in both phases, and Rh, Cr and Ni preferentially in the iron-rich phase.

元の言語English
ページ(範囲)1864-1868
ページ数5
ジャーナルMaterials Transactions
47
発行部数7
DOI
出版物ステータスPublished - 2006 7
外部発表Yes

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scrap
Phase separation
Copper
Iron
iron
copper
Carbon
Liquids
liquids
carbon
miscibility gap
copper alloys
Aluminum Oxide
Crucibles
crucibles
Phase equilibria
Alumina
aluminum oxides
Solubility

ASJC Scopus subject areas

  • Materials Science(all)
  • Metals and Alloys

これを引用

Copper enrichment of iron-base alloy scraps by phase separation in liquid Fe-Cu-P and Fe-Cu-P-C systems. / Yamaguchi, Katsunori; Ohara, Takuya; Ueda, Shigeru; Takeda, Yoichi.

:: Materials Transactions, 巻 47, 番号 7, 07.2006, p. 1864-1868.

研究成果: Article

Yamaguchi, Katsunori ; Ohara, Takuya ; Ueda, Shigeru ; Takeda, Yoichi. / Copper enrichment of iron-base alloy scraps by phase separation in liquid Fe-Cu-P and Fe-Cu-P-C systems. :: Materials Transactions. 2006 ; 巻 47, 番号 7. pp. 1864-1868.
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AU - Takeda, Yoichi

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AB - A clear phase separation into liquid iron-rich and copper-rich alloys was observed when a mixture of Fe, Cu and P was melted in an alumina or carbon crucible at 1373 K. Since this phase separation is considered to be useful for recovering valuable copper from iron-base alloy scraps, the phase equilibrium in the Fe-Cu-P and Fe-Cu-P-C systems was investigated in this study. The effect of carbon to the phase separation was determined in the concentration range of phosphorous between 7 and 11 mass% at 1373 K. It was found that the addition of carbon enlarged the miscibility gap of the Fe-Cu-P system. Distribution ratios of some minor elements of Au, Ag, Pd, Pt, Rh, Cr, Mn and Ni between the liquid iron-rich and copper rich phases were also measured at 1373 K. It was found that Au, Ag and Pd were enriched in the copper-rich phase, while Pt and Mn were distributed in both phases, and Rh, Cr and Ni preferentially in the iron-rich phase.

KW - Copper recovery

KW - Distribution ratio

KW - Iron scrap

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KW - Iron-copper-phosphorus-carbon

KW - Precious metal

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