JOM

, Volume 56, Issue 12, pp 55–58 | Cite as

A process for extracting precious metals from spent printed circuit boards and automobile catalysts

  • Byung-Su Kim
  • Jae-chun Lee
  • Seung-Pil Seo
  • Young-Koo Park
  • Hong Yong Sohn
Research Summary Pyrometallurgy Fundamentals

Abstract

In this work, a novel process to simultaneously extract precious metals such as gold, palladium, and platinum from spent printed circuit boards (PCBs) and honeycomb-type auto catalysts by smelting without the addition of any collector metals has been developed. The process uses metal components such as copper, tin, and iron contained in spent PCBs as the collector metal and spent auto catalysts as a slag formative. In each experiment, spent PCBs and auto catalysts were crushed, incinerated, and melted after adding fluxes and carbon. Up to 90% of the gold, palladium, and platinum in the raw materials were extracted in a Cu-Sn alloy phase.

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References

  1. 1.
    J.C. Lee et al., J. of Korean. Inst. of Resources Recycling, 7 (3) (1998), pp. 58–66.Google Scholar
  2. 2.
    E.Y.L. Sum, JOM, 43 (4) (1991), pp. 53–61.Google Scholar
  3. 3.
    J.E. Hoffmann, JOM, 44 (7) (1992), pp. 43–48.Google Scholar
  4. 4.
    M. Benson et al., Resources, Conservation and Recycling, 31 (2000), pp. 1–7.CrossRefGoogle Scholar
  5. 5.
    J. Shibata and A. Okuda, The Mining and Materials Processing Institute of Japan, 118 (2002), pp. 1–8.Google Scholar
  6. 6.
    J.W. Ahn, J.G. Ahn, and M.S. Lee, J. Korean Inst. Metall. & Mater., 40 (2002), pp. 116–121.Google Scholar
  7. 7.
    B.C. Ban, et al., J. of Korean. Inst. of Resources Recycling, 11 (6) (2002), pp. 3–11.Google Scholar
  8. 8.
    R.K. Mishra, EPD Congress, ed. Brajendra Mishra (Warrendale, PA: TMS, 1988), pp. 483–501.Google Scholar
  9. 9.
    M. Allivert et al., Slag Atlas (Germany: Verlag Stahleisen GmbH, 1995), pp. 105, 113, 126, and 156.Google Scholar
  10. 10.
    M. Nagamori and P.J. Mackey, Metall. Trans. B., 9B (1978), pp. 567–579.Google Scholar
  11. 11.
    LG-Nikko Copper, Uljin-gun, Ulsan, Korea, private communication (August 2002).Google Scholar

Copyright information

© TMS 2004

Authors and Affiliations

  • Byung-Su Kim
    • 1
  • Jae-chun Lee
    • 1
  • Seung-Pil Seo
    • 2
  • Young-Koo Park
    • 2
  • Hong Yong Sohn
    • 3
  1. 1.the Minerals & Materials Processing Division of the Korea Institute of Geoscience & Mineral ResourcesDaejeonKorea
  2. 2.the Department of Metallurgical EngineeringChonbuk National UniversityJeonjuKorea
  3. 3.the Department of Metallurgical Engineeringthe University of UtahSalt Lake City

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