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Dissolution Behavior of Rhodium in the Na2O-SiO2 and CaO-SiO2 Slags

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Abstract

To understand the behavior of rhodium during its recovery process, the dissolution behaviors of rhodium in Na2O-SiO2 and in CaO-SiO2 slags at temperatures ranging from 1423 K to 1623 K (from 1150 °C to 1350 °C) and from 1773 K to 1873 K (from 1500 °C to 1600 °C), respectively, in an oxidizing atmosphere were investigated. The solubility of rhodium in the slags was found to increase with increasing oxygen partial pressure, temperature, and the basic oxide content. The correlation between the solubility of rhodium and the oxygen partial pressure suggested that rhodium dissolved into the slags as RhO1.5. The dissolution of rhodium was slightly endothermic: the enthalpy change of the dissolution of solid rhodium was determined to be 50 ± 10 kJ/mol for the 50(mass pct)Na2O-50SiO2; and 188 ± 94 kJ/mol for the 56(mass pct)CaO-44SiO2 slag systems. The increase in the solubility of rhodium with the basic oxide content indicated that rhodium exhibits acidic behavior in slags. The correlation between the solubility of rhodium and the sulfide capacity of the slags suggested that the ionic species of rhodium in slags is the rhodate ion, RhO −2 . The rhodate capacity of the slags was defined, and its application to estimate the possible rhodium content in various slag systems was proposed.

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References

  1. J. Butler: Platinum 2012, Johnson Matthey Plc., Hertfordshire, 2012.

    Google Scholar 

  2. M. Benson, C.R. Bennett, J.E. Harry, M.K. Patel, and M. Cross: Resour., Conserv. Recycl., 2000, vol. 31, pp. 1–7.

    Article  Google Scholar 

  3. C. Hagelüken: World Metall.–Erzmet. 2006, vol. 59, pp. 152–61.

    Google Scholar 

  4. T.H. Okabe, H. Nakada, and K. Morita: J. Surf. Sci. Soc. Jpn., 2008, vol. 29, no. 10, pp. 592–600.

    Article  CAS  Google Scholar 

  5. S. Nakamura and N. Sano: Metall. Mater. Trans. B, 1997, vol. 28B, pp. 103–08.

    Article  CAS  Google Scholar 

  6. S. Nakamura, K. Morita, and N. Sano: Metall. Mater. Trans. B, 1998, vol. 29B, pp. 411–14.

    Article  CAS  Google Scholar 

  7. D.R. Swinbourne, S. Yan, and S. Salim: Trans. Inst. Min. Metall., Sect. C, 2005, vol. 114, pp. C23–C29.

    CAS  Google Scholar 

  8. H. Shuto, T.H. Okabe, and K. Morita: Mater. Trans., 2011, vol. 52, no. 10, pp. 1899–1904.

    Article  CAS  Google Scholar 

  9. A. Paul and J.M. Parker: Phys. Chem. Glasses, 1975, vol. 16, no. 5, pp. 103–07.

    CAS  Google Scholar 

  10. P. Dable, M. Allibert, and J.C. Poignet: J. Am. Ceram. Soc., 2001, vol. 84, no. 5, pp. 1097–07.

    Article  CAS  Google Scholar 

  11. I. Barin: Thermochemical Data of Pure Substances, VCH Verlagsgesellschaft, mbH, Weinheim, 1989.

    Google Scholar 

  12. F.D. Richardson and C.J.B. Fincham: J. Iron Steel Inst., London, 1954, pp. 4–15.

  13. D.J. Sosinsky and I.D. Sommerville: Metall. Trans. B, 1986, vol. 17B, pp. 331–37.

    Article  CAS  Google Scholar 

  14. J.A. Duffy and M. Ingram: J. Non-Cryst. Solids, 1976, vol. 21, pp. 373–410.

    Article  CAS  Google Scholar 

  15. J.A. Duffy: Geochim. Cosmochim. Acta, 1993, vol. 57, pp. 3961–3970.

    Article  CAS  Google Scholar 

  16. R. Inoue and H. Suito: Trans. Iron Steel Inst. Jpn., 1982, vol. 22, pp. 514–23.

    Article  CAS  Google Scholar 

  17. A. Mendiboure, H. Eickenbusch, R. Schollhorn, and G.V. Subba Rao: J. Solid State Chem., 1987, vol. 71, pp. 19–28.

    Article  CAS  Google Scholar 

  18. K.T. Jacob and Y. Waseda: J. Solid State Chem., 2000, vol. 150, pp. 213–220.

    Article  CAS  Google Scholar 

  19. N.I. Zakharchenko: Russ. J. Appl. Chem., 2002, vol. 75, pp. 1629–31.

    Google Scholar 

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Acknowledgments

This research was supported the New Energy and Industrial Technology Development Organization (NEDO), Japan. The authors would like to express our thanks to Mr. Yuzuru Nakamura, Dowa Metals & Mining Co., Ltd., Japan, and Assoc. Prof. Dr. Takeshi Yoshikawa, Institute of Industrial Science, The University of Tokyo, Japan, for the fruitful advice and discussion.

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Authors and Affiliations

  1. Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan

    Chompunoot Wiraseranee (Graduate Student)

  2. Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan

    Toru H. Okabe (Professor) & Kazuki Morita (Professor)

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  1. Chompunoot Wiraseranee
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  2. Toru H. Okabe
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  3. Kazuki Morita
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Correspondence to Chompunoot Wiraseranee.

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Manuscript submitted February 27, 2012.

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Wiraseranee, C., Okabe, T.H. & Morita, K. Dissolution Behavior of Rhodium in the Na2O-SiO2 and CaO-SiO2 Slags. Metall Mater Trans B 44, 584–592 (2013). https://doi.org/10.1007/s11663-013-9816-x

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