Skip to main content
SpringerLink
Log in

Dissolution and diffusion of TiO2 in the CaO-Al2O3-SiO2 slag

  • Published:
International Journal of Minerals, Metallurgy, and Materials Aims and scope Submit manuscript

Abstract

The dissolution of TiO2 in the CaO-Al2O3-SiO2 slag under static conditions was studied in the temperature range from 1643 K to 1703 K. After TiO2 dissolved, the microstructure of the interface between TiO2 and the slag was observed by scanning electron microscopy, and the concentration profiles of Ti4+ and other ions across the TiO2/slag interfaces were analyzed by energy-dispersive X-ray spectroscopy. On the basis of these results, the dissolution behavior of TiO2 was evaluated, and the diffusivity of Ti4+ in the bulk slag was estimated. According to the Stokes-Einstein relation, the viscosity calculated by a previously reported model gave a diffusivity of Ti4+ ions greater than that estimated by the concentration profiles of Ti4+ ions. The mechanism of TiO2 dissolution in the CaO-Al2O3-SiO2 slag is discussed in detail.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. M. Wang, Y.P. Bao, H. Cui, H.J. Wu, and W.S. Wu, Generation mechanism of Al2O3-TiN inclusion in IF steel, J. Iron Steel Res., 22(2010), No. 7, p. 29.

    Google Scholar 

  2. A.O. Kluken and Ø. Grong, Mechanisms of inclusion formation in Al-Ti-Si-Mn deoxidized steel weld metals, Metall. Trans. A, 20(1989), No. 8, p. 1335.

    Article  Google Scholar 

  3. W.C. Doo, D.Y. Kim, S.C. Kang, and K.W. Yi, The morphology of Al-Ti-O complex oxide inclusions formed in an ultra low-carbon steel melt during the RH process, Met. Mater. Int., 13(2007), No. 3, p. 249.

    Article  Google Scholar 

  4. M.K. Sun, I.H. Jung, and H.G. Lee, Morphology and chemistry of oxide inclusions after Al and Ti complex deoxidation, Met. Mater. Int., 14(2008), No. 6, p. 791.

    Article  Google Scholar 

  5. R.F. Johnston, R.A. Stark, and J. Taylor, Diffusion in liquid slags, Ironmaking Steelmaking, 4(1974), p. 220.

    Google Scholar 

  6. Z. Ping and S. Seetharaman, Dissolution of MgO in CaO-“FeO”-CaF2-SiO2 slags under static conditions, J. Am. Ceram. Soc., 77(1994), No. 4, p. 970.

    Article  Google Scholar 

  7. S.H. Amini, M.P. Brungs, S. Jahanshahi, and O. Ostrovski, Effects of additives and temperature on dissolution rate and diffusivity of lime in Al2O3-CaO-SiO2 based slags, Metall. Mater. Trans. B, 37(2006), p. 773.

    Article  Google Scholar 

  8. J.H. Park, I.H. Jung, and H.G. Lee, Dissolution behavior of Al2O3 and MgO inclusions in the CaO-Al2O3-SiO2 slags: formation of ring-like structure of MgAl2O4 and Ca2SiO4 around MgO inclusions, ISIJ Int., 46(2006), No. 11, p. 1626.

    Article  Google Scholar 

  9. X. Yu, R.J. Pomfret, and K.S. Coley, Dissolution of alumina in mold fluxes, Metall. Mater. Trans. B, 28(1997), No. 2, p. 275.

    Article  Google Scholar 

  10. D.Y. Wang, J. Liu, M.F. Jang, F. Tsukihashi, and H. Matsuura, Dissolution of Al2TiO5 inclusions in CaO-SiO2-Al2O3 slags at 1823 K, Int. J. Miner. Met. Mater., 18(2011), No. 6, p. 646.

    Article  Google Scholar 

  11. G.H. Zhang and K.C. Chou, Modeling the viscosity of aluminosilicate melt, Steel Res. Int., 84(2013), No. 7, p. 631.

    Article  Google Scholar 

  12. G.H. Zhang, K.C. Chou, and K. Mills, Modelling viscosities of CaO-MgO-Al2O3-SiO2 molten slags, ISIJ Int., 52(2012), No. 3, p. 355.

    Article  Google Scholar 

  13. M.D. Dolan and R.F. Johnston, Multicomponent diffusion in molten slags, Metall. Mater. Trans. B, 35(2004), No. 4, p. 675.

    Article  Google Scholar 

  14. Slag Atlas, 2nd Ed., Edited by VDEh, Verlag Sthaleisen GmbH, Germany, 1995, p. 6.

  15. Z. Wang, Q.F. Shu, and K.C. Chou, Structure of CaO-B2O3-SiO2-TiO2 glasses: a Raman spectral study, ISIJ Int., 51(2011), No. 7, p. 1021.

    Article  Google Scholar 

  16. Y. Ukyo and K.S. Goto, Measurement of quasi-binary interdiffusivities of various oxides in liquid slags, Tetsu-to-Hagane, 68(1982), No. 14, p. 1981.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China

    Zhong-shan Ren, Xiao-jun Hu & Kuo-chih Chou

  2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Zhong-shan Ren, Xin-mei Hou & Kuo-chih Chou

  3. School of Materials and Metallurgy, Northeastern University, Shenyang, 110006, China

    Xiang-xin Xue

Authors
  1. Zhong-shan Ren
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Xiao-jun Hu
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Xin-mei Hou
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Xiang-xin Xue
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Kuo-chih Chou
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Xiao-jun Hu.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Ren, Zs., Hu, Xj., Hou, Xm. et al. Dissolution and diffusion of TiO2 in the CaO-Al2O3-SiO2 slag. Int J Miner Metall Mater 21, 345–352 (2014). https://doi.org/10.1007/s12613-014-0915-8

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12613-014-0915-8

Keywords

Search

Navigation