pp 1–8 | Cite as

Kinetics of Magnesium and Calcium Extraction from Fly Ash by Carbochlorination

  • Long Wang
  • Ting-An ZhangEmail author
  • Guo-Zhi Lv
  • Zhi-He Dou
  • Wei-Guang Zhang
  • Li-Ping Niu
  • Zi-mu Zhang
Metallurgical Kinetics


In the metal extraction process, recovery of valuable elements from fly ash can have economic benefits and maximize its utilization. Extraction of Mg and Ca from fly ash by the carbochlorination method was studied as a function of carbochlorination temperature, time, carbon content, pellet diameter, and chlorine gas flow rate. The kinetic regime of the carbochlorination of Mg- and Ca-bearing compounds in the fly ash was identified. The carbochlorination residues were analyzed by chemical analysis and scanning electron microscopy. The results showed that chemical reaction control was dominant in carbochlorination of Mg in the temperature range of 800°C to 1050°C. However, for carbochlorination of Ca, the carbochlorination reaction was controlled by the diffusion process. Morphological changes such as the breakage and disappearance of spherical particles showed that the original spherical structure of fly ash was destroyed in the carbochlorination process.



This work was supported by the National Natural Science Foundation of China (Nos. 51874078, U1710257, U1202274 and U1508217), State Key Laboratory of Pressure Hydrometallurgical Technology of Associated Nonferrous Metal Resources (YY2016006), and the Fund of Liaoning S&T Project (20180551008).

Supplementary material

11837_2019_3474_MOESM1_ESM.pdf (80 kb)
Supplementary material 1 (PDF 80 kb)


  1. 1.
    G.Z. Lv, T.A. Zhang, W.G. Zhang, X.F. Zhu, Y. Liu, L. Wang, Z.H. Dou, and Q.Y. Zhao, TMS Light Metals (2017), pp. 115–120.Google Scholar
  2. 2.
    J.B. Zhang, S.P. Li, H.Q. Li, and M.M. He, Fuel Process. Technol. 151, 64 (2016).CrossRefGoogle Scholar
  3. 3.
    A. Shemi, R.N. Mpana, and S. Ndlovu, Miner. Eng. 34, 30 (2012).CrossRefGoogle Scholar
  4. 4.
    Y. Guo, Z. Zhao, Q. Zhao, and F.Q. Cheng, Hydrometallurgy 169, 418 (2017).CrossRefGoogle Scholar
  5. 5.
    G.H. Bai, W. Teng, X.G. Wang, J.G. Qin, and P. Xu, Trans. Nonferr. Met. Soc. China 20, s169 (2010).CrossRefGoogle Scholar
  6. 6.
    Q. Luo, G.L. Chen, Y.Z. Sun, Y.M. Ye, X.C. Qiao, and J.G. Yu, Ind. Eng. Chem. Res. 52, 18184 (2013).CrossRefGoogle Scholar
  7. 7.
    H. Kai, K. Inoue, H. Harada, H. Kawakita, and K. Ohto, Trans. Nonferr. Met. Soc. 21, 1422 (2011).CrossRefGoogle Scholar
  8. 8.
    C.Y. Wu, H.F. Yu, and H.F. Zhang, Trans. Nonferr. Met. Soc. China 22, 2282 (2012).CrossRefGoogle Scholar
  9. 9.
    R.S. Blissett and N.A. Rowson, Fuel 97, 1 (2012).CrossRefGoogle Scholar
  10. 10.
    M. Ahmaruzzaman, Prog. Energ. Combust. 36, 327 (2010).CrossRefGoogle Scholar
  11. 11.
    A. Seidel and Y. Zimmels, Chem. Eng. Sci. 53, 3835 (1998).CrossRefGoogle Scholar
  12. 12.
    Z. Fang and H.D. Gesser, Hydrometallurgy 41, 187 (1996).CrossRefGoogle Scholar
  13. 13.
    G. Weibel, U. Eggenberger, D.A. Kulik, W. Hummel, S. Schlumberger, W. Klink, and M. Fisch, Waste Manag. 76, 457 (2018).CrossRefGoogle Scholar
  14. 14.
    K.K. Panday, G. Prasad, and V.N. Singh, Water Res. 19, 869 (1985).CrossRefGoogle Scholar
  15. 15.
    L. Wang, T.A. Zhang, G.Z. Lv, J.Z. Zhang, Z.H. Dou, W.G. Zhang, L.P. Niu, and Y. Liu, Metall. Mater. Trans. B 49, 2835 (2018).CrossRefGoogle Scholar
  16. 16.
    L. Wang, T.A. Zhang, G.Z. Lv, Z.H. Dou, W.G. Zhang, and L.P. Niu, JOM 71, 492 (2019).CrossRefGoogle Scholar
  17. 17.
    L.P. Niu, T.A. Zhang, G.Z. Lv, and B.J. Zhang, Magnes. Technol. 2017, 209 (2017).Google Scholar
  18. 18.
    N. Kanari, I. Gaballah, and E. Allain, Metall. Mater. Trans. B 30, 577 (1999).CrossRefGoogle Scholar
  19. 19.
    Daniel.M. Pasquevich, Julio.A. Gamboa, and A. Caneiro, Thermochim Acta 209, 209 (1992).CrossRefGoogle Scholar
  20. 20.
    L.Q. Zhang, Z.C. Wang, S.X. Tong, P.X. Lei, and W. Zou, Metall. Mater. Trans. B 35, 217 (2004).CrossRefGoogle Scholar
  21. 21.
    N. Kanari, I. Gaballah, and B.R. Reddy, Metall. Mater. Trans. B 29, 729 (1998).CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Long Wang
    • 1
  • Ting-An Zhang
    • 1
    Email author
  • Guo-Zhi Lv
    • 1
  • Zhi-He Dou
    • 1
  • Wei-Guang Zhang
    • 1
  • Li-Ping Niu
    • 1
  • Zi-mu Zhang
    • 1
  1. 1.Key Laboratory for Ecological Utilization of Multimetallic Mineral, Ministry of EducationNortheastern UniversityShenyangChina

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