Skip to main content
SpringerLink
Log in

Crystallization Behaviors of Spinel During Cooling Process of Modified EAF Slag

  • Published:
Metallurgical and Materials Transactions B Aims and scope Submit manuscript

Abstract

EAF slag constitutes a major waste in the steel industry, which necessitates the development of processes to recover its valuable compounds and thermal energy values. A promising method involves the modification of the composition of EAF slag melts to utilize its waste heat and recover more valuable elements by controlled crystallization of spinel under a cooling process. In this study, crystallization behaviors of modified EAF slag melts with a basicity of 1.2 were investigated, with the aim of precipitating more magnetic spinel phases, and leaving a matrix with the amorphous phase, which favors subsequent utilization in the cement industry. Samples were prepared at different cooling temperatures, for different holding times, or quenched by air or water. Results show that two kinds of spinel phases were found during the cooling process of the melts. One was bulky spinel (BS) in granular form with size > 40 μm, and the other was dendritic spinel (DS) with arms < 20 μm. Three stages existed in the crystallization process of the melts. It is crucial to keep the slag melts in stage one for less than 30 minutes and then rapidly cool it to stage three. More and larger BS was obtained when this method was applied.

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

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12

Similar content being viewed by others

References

  1. International Energy Agency: Energy Balance Flows, https://www.iea.org. Accessed 5 June 2019.

  2. M. Barati and S. Jahanshahi: in: 3rd Slag Valorization Symposium, Unpublished Research, Mechelen Belgium, 2019.

  3. G. Bisio: Energy, 1997, vol. 22, pp. 501-9.

    Article  Google Scholar 

  4. Y. Li and W. B. Dai: J. Cleaner Prod., 2018, vol. 175, pp. 176-89.

    Article  CAS  Google Scholar 

  5. S. C. Tian, J. C. Jiang, F. Yan, K. M. Li and X. Chen: Environ. Sci. Technol., 2015, vol. 49, pp. 7464-72.

    Article  CAS  Google Scholar 

  6. S. Sorlini, A. Sanzeni and L. Rondi: J. Hazard. Mater., 2012, vol. 209-10, pp. 84-91.

    Article  Google Scholar 

  7. P. E. Tsakiridis, G. D. Papadimitriou, S. Tsivilis and C. Koroneos: J. Hazard. Mater., 2008, vol. 152, pp. 805-11.

    Article  CAS  Google Scholar 

  8. S. N. Lekakh, C. H. Rawlins, D. G. C. Robertson, V. L. Richards and K. D. Peaslee: Metall. Mater. Trans. B, 2008, vol. 39, pp. 125-34.

    Article  Google Scholar 

  9. J. H. Park, J. J. Wang, S. H. Kim, J. S. Cho, S. W. Kang, R. D. Delaune and D. C. Seo: Chem. Eng. J., 2017, vol. 327, pp. 713-24.

    Article  CAS  Google Scholar 

  10. X. Lu, Y. Li, S. Ma, W. B. Dai and D. Q. Cang: Chin. J. Eng., 2016, vol. 38, pp. 1386-92.

    Google Scholar 

  11. R. Sarkar, N. Singh and S. D. Kumar: Bull. Mater. Sci., 2010, vol. 33, pp. 293-8.

    Article  CAS  Google Scholar 

  12. G. Kim and I. Sohn: J. Hazard. Mater., 2018, vol. 359, pp. 174-85.

    Article  CAS  Google Scholar 

  13. Y. J. Tu, C. F. You and C. K. Chang: J. Hazard. Mater., 2013, vol. 258-9, pp. 102-8.

    Article  Google Scholar 

  14. A. Semykina and S. Seetharaman: Metall. Mater. Trans. 2011, vol. 42, pp. 2-4.

    Article  Google Scholar 

  15. V. Shatokha, A. Semykina, J. Nakano, S. Sridhar and S. Seetharaman: J. Min. Metal. B, 2013, vol. 49, pp. 169-74.

    Article  CAS  Google Scholar 

  16. K. K. Cui, Z. J. Wu, W. Huang, Z. F. Gao, X. M. Shen and W. M. Liu: ACS Sustainable Chem. Eng., 2014, vol. 2, pp. 344-7.

    Article  CAS  Google Scholar 

  17. X. Peng, D. He, A. Xu, Z. Gu, Q. Yang, F. Engström and B. Bo: J. Alloys Compd., 2017, vol. 712, pp. 640-8.

    Article  Google Scholar 

  18. A. Semykina, V. Shatokha, and S. Seethareama: Ironmak. Steelmak., 2011, vol. 37, pp. 536–40.

  19. Y. Li, X. M. Liu, H. H. Sun and D. Q. Cang: Sci. China Technol. Sci., 2011, vol. 54, pp. 105-9.

    Article  CAS  Google Scholar 

  20. C. Pellegrino and V. Gaddo: Cem. Concr. Compos., 2009, vol. 31, pp. 663-71.

    Article  CAS  Google Scholar 

  21. O. Bretcanu, S. Spriano, E. Verné, M. Cöisson, P. Tiberto and P. Allia: Acta Biomater., 2005, vol. 1, pp. 421-9.

    Article  CAS  Google Scholar 

  22. V. D. Eisenhuttenleute: Slag Atlas, 2nd ed., Verlag Stahleisen GmbH, Duesseldorf, 1995, pp. 126.

    Google Scholar 

  23. S. Hara, K. Irie and K. Ogino: Trans. Jpn. Inst. Met., 1988, vol. 29, pp. 977-89.

    Article  CAS  Google Scholar 

  24. S. S. Jung and I. Sohn: Environ. Sci. Technol., 2014, vol. 48, pp. 1886-92.

    Article  CAS  Google Scholar 

  25. T. Osugi, S. Sukenaga, Y. Inatomi, Y. Gonda, N. Saito and K. Nakashima: ISIJ Int., 2013 vol. 53, pp. 185-90.

    Article  CAS  Google Scholar 

  26. B. O. Mysen: Geochim. Cosmochim. Acta, 2006, vol. 70, pp. 3121-38.

    Article  CAS  Google Scholar 

  27. Z. Wang, Y. Sun, S. Sridhar, Z. Mei and Z. Zhang: Metall. Mater. Trans. B, 2015, vol. 46, pp. 2246-54.

    Article  CAS  Google Scholar 

  28. X. Lu: Study on the effects of EAF slag hot modification on its iron recovery and the cementitious activity, Doctoral Dissertation, University of Science and Technology Beijing, 2017.

Download references

Acknowledgments

This work has been financially supported by National Natural Science Foundation of China (No. U1960201) and by the National Key Research and Development Program (2016YFB0601304).

Author information

Authors and Affiliations

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

    Yu Li, Xinyang Meng & Kuiyuan Chen

  2. Department of Materials Science and Engineering, University of Toronto, 140 e 184 College Street, Toronto, ON, M5S 3E4, Canada

    Mansoor Barati

Authors
  1. Yu Li
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Xinyang Meng
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Kuiyuan Chen
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Mansoor Barati
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding authors

Correspondence to Yu Li or Mansoor Barati.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Manuscript submitted August 18, 2019.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Li, Y., Meng, X., Chen, K. et al. Crystallization Behaviors of Spinel During Cooling Process of Modified EAF Slag. Metall Mater Trans B 51, 1027–1038 (2020). https://doi.org/10.1007/s11663-020-01802-2

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11663-020-01802-2

Search

Navigation