Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Recovery of Platinum Group Metals from the Leach Solution of Spent Automotive Catalysts by Cementation

자동차(自動車) 폐촉매(廢觸媒)의 침출액(浸出液)으로부터 시멘테이션에 의한 백금족(白金族) 금속(金屬)의 회수(回收)

  • Kim, Min-Seuk (Mineral Resources Research Division, Korea Institute of Geoscience & Mineral Resources (KlGAM)) ;
  • Kim, Byung-Su (Mineral Resources Research Division, Korea Institute of Geoscience & Mineral Resources (KlGAM)) ;
  • Kim, Eun-Young (Mineral Resources Research Division, Korea Institute of Geoscience & Mineral Resources (KlGAM)) ;
  • Kim, Soo-Kyung (Mineral Resources Research Division, Korea Institute of Geoscience & Mineral Resources (KlGAM)) ;
  • Ryu, Jae-Wook (MKE metal R&D Support Platform, Korea Metal Material Research Association) ;
  • Lee, Jae-Chun (Mineral Resources Research Division, Korea Institute of Geoscience & Mineral Resources (KlGAM))
  • 김민석 (한국지질자원연구원, 광물자원연구본부) ;
  • 김병수 (한국지질자원연구원, 광물자원연구본부) ;
  • 김은영 (한국지질자원연구원, 광물자원연구본부) ;
  • 김수경 (한국지질자원연구원, 광물자원연구본부) ;
  • 류재욱 (한국금속재료연구조합, 지식경제부 금속재료 R&D지원단) ;
  • 이재천 (한국지질자원연구원, 광물자원연구본부)
  • Received : 2011.03.28
  • Accepted : 2011.07.18
  • Published : 2011.08.31
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Abstract

The recovery of platinum group metals (PGMs) from the leach solution of spent auto-catalyst and the wash solution of the leach residue was investigated in the laboratory scale experiments by the cementation process using metal powders as the reductant. In this study, the effect of Al, Mg and Zn powders on the cementation process was particularly examined. Aluminum powder was selected as the most suitable reductant for the cementation of PGMs. At the cementation time of 10 minute under the aluminium stoichimetric amount of 19.3 and the reaction temperature of $50{\sim}60^{\circ}C$, the recovery of platinum group metals from the leach solution of the spent auto-catalyst was found to be 99.3%, 99.4%, 90.2% for Pt, Pd and Rh, respectively. Under the same conditions with the aluminium stoichimetric amount of 45, the recovery of platinum group metals from the wash solution of the leach residue of spent catalyst was observed to be 97%, 97% and 90% for Pt, Pd and Rh, respectively. In addition, it was possible to upgrade the platinum group metals in the precipitates obtained from the cementation process by about 10% through the removal of metal impurities by the nitric acid leaching at ambient temperature.

금속분말을 환원제로 사용하는 시멘테이션에 의하여 자동차 폐촉매의 침출액과 침출잔사의 세척액으로부터 백금족 금속을 환원 석출시켜 회수하는 연구를 수행하였다. 환원제로 사용한 알루미늄, 마그네슘 그리고 아연이 백금족 금속의 시멘테이션에 미치는 영향을 조사하였으며 알루미늄을 최적 환원제로 선정하였다. 침출액에 19.3 당량의 알루미늄을 첨가하고 $50{\sim}60^{\circ}C$에서 10분간 시멘테이션을 행하였을 때 백금, 팔라듐, 로듐의 환원석출율은 각각 99.3%, 99.4%, 90.2% 정도 이었다. 또한 세척액에 알루미늄을 45 당량 투입한 후 시멘터이션 반응을 통해 백금, 팔라륨, 로듐을 각각 97%, 97%, 90% 회수할 수 있었다. 그리고 회수한 환원석출물의 금속불순물들을 질산침출로 제거함으로써 백금족 금속의 품위를 약 10% 정도 향상시킬 수 있었다.

Keywords

References

  1. Engelhard Corporation, Reference for Business, Encyclopedia of Business, 2nd ed., http://www.referenceforbusiness.com/history/En-Ge/Equistar-Chemicals-LP.html, 2010-12-16.
  2. Platinum Today, Autocatalyst, Johnson Matthey, http://www.platinum.matthey.com/applications/autocatalyst. 2010-12-16
  3. Robson, G. G. and Smith, F.J., 1988: PLATINUM 1988, pp. 64, Johnson Matthey, London, UK.
  4. Heck, R. M. and Farrauto, R. J., 2001: Automobile exhaust catalysts, Applied Catalysis A: General, 221, pp. 443-457. https://doi.org/10.1016/S0926-860X(01)00818-3
  5. Jang, B. H., et al., 2001: Effect of Alkaline Earth/Rare earth Addition on the Heat Resistance of Pt : Rh Three Wat Catalysts, HWAHAK KONGHAK, 39(2), pp. 131-137.
  6. van Gelder, J.W. and Kammeraat, K., 2008: Platinum from AngloPlatinum in catalysts of European car manufacturers, Profundo economic research, 26 March 2008, Castricum, Netherlands.
  7. Fornalczyk, A. and Saternus, M., 2009: Removal of Platinum Group Metals from the Used Auto Catalytic Converter, Metalurgija, 48(2), pp. 133-136.
  8. Jollie, D., 2010: PLATINUM 2010, Johnson Matthey, London, UK.
  9. Mishra, R.K., 1989: Recovery of platinum group metals from automobile catalytic converters - A review, Precious Metals '89, ed. by Jha, M.C. and Hill, S.D., pp. 483-501, TMS-AIME, Warrendale, PA, USA.
  10. Hageluken, C., 2007: Closing the loop-Recycling of automotive catalysts, METALL, 61 (1-2), pp. 24-39.
  11. Suzuki, S., Ogino, M., and Matsumoto, T., 2007: Recovery of Platinum Group Metals at Nippon PGM Co., Ltd., Journal of the Mining and Materials Processing Institute of Japan, 123(12), pp. 734-736. https://doi.org/10.2473/journalofmmij.123.734
  12. Kuczynski, R.J., Atkinson, G.B., and Dolinar, W.J, 1995: High-temperature cyanide leaching of platinum-group metals from automobile catalysts - Pilot plant, U.S. Bureau of Mines Report of Investigations 9543, PGH, PA, USA.
  13. Chen, J. and Huang, K., 2006: A new technique for extraction of platinum group metals by pressure cyanidation, Hydrometallurgy, 82, pp. 164-171. https://doi.org/10.1016/j.hydromet.2006.03.041
  14. Meng, X. and Han, K.N., 1995: Recovery of platinum and palladium from spent automobile catalytic converters by leaching with solutions containing halogen salts, ammonium and oxidants, Prodeedings of Third International Symposium on Recycling of Metals and Engineered Materials, ed. by Queneau, P.B. and Peterson, R.D., pp. 501-513, TMS, Point Clear, Alabama, Nov 12-15, 1995.
  15. 이재천, 정진기, 김민석, 김병수, 김치권, 2004: 자동차 폐촉매로부터 염산침출에 의한 백금족 금속의 회수, 자원리싸이클링, 13(5), pp. 28-36.
  16. 김미애, 이재천, 김치권, 김민석, 김병수, 유경근, 2006: 자동차 폐촉매의 침출액으로부터 백금족 금속의 용매추출, 자원리싸리클링, 15(5), 3-10.
  17. Edwards, R.I., 1976: Refining of the platinum-group metals, JOM, 28(7), pp. 4-9.
  18. Hunt, L.B. and Lever, F.M., 1969: Availability of the Platinum Metals, Platinum Metals Rev., 13(4), 126-138.
  19. Benner, L.S., et al., 1991: Recovery and Refining of Precious Metals, Precious Metals Science and Technology, International Precious Metals Institute, pp. 375-399, Allentown, PA, USA.
  20. Cramer, L.A., 2001: The Extractive Metallurgy of South Africa's Platinum Ores, JOM, 53(10), 14-18. https://doi.org/10.1007/s11837-001-0048-1

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