RECOVERY OF SODIUM FROM ALUMINA-EXTRACTED FLY ASH USING CONCENTRATED SODIUM CARBONATE SOLUTION

  • Zehua Wang Institute of Process Engineering, Chinese Academy of Sciences
  • Shili Zheng Institute of Process Engineering, Chinese Academy of Sciences
  • Shuhua Ma Institute of Process Engineering, Chinese Academy of Sciences
  • Jian Ding Institute of Process Engineering, Chinese Academy of Sciences
  • Xiaohui Wang Institute of Process Engineering, Chinese Academy of Sciences

Abstract


A novel method for recovery of sodium from alumina-extracted fly ash (AEFA), which was mainly composed of NaCaHSiO4, using concentrated Na2CO3 solution was presented. Sodium was extracted from the AEFA efficiently, and the factors influencing the process were systematically investigated. The optimal conditions were as follows: reaction temperature = 180 °C, Na2CO3 concentration = 170 g/L, liquid-to-solid ratio = 10 mL/g, and reaction time = 2 h. Under optimal conditions, the Na2O extraction rate was 93.79%, and the Na2O content of the products was 1. 02 wt% which was lower than that of the products obtained from the recovery of sodium from AEFA in a dilute NaOH solution (i.e., 2 wt%). Furthermore, this process avoided the production of a dilute NaOH solution, thus lowering the energy consumption during concentrating and recycling the recovered sodium when compared with the NaOH-based route. Therefore, the recovery of sodium from AEFA using concentrated Na2CO3 solution was more suitable for use in industrial applications. In addition, the 27Al MAS NMR result revealed that the residual Na+ ions are adsorbed to compensate for the charge deficit due to the replacement of Si4+ by Al3+ ions in the tobermorite structure.

References

Z. Yao, X. Ji, P. Sarker, J. Tang, L. Ge, M. Xia, Y. Xi, Earth-Sci. Rev., 141 (2015) 105-121.

J. Ding, S. Ma, S. Zheng, Y. Zhang, Z. Xie, S. Shen, Z. Liu, Hydrometallurgy, 161 (2016) 58-64.

Q. Yang, S. Ma, S. Zheng, R. Zhang, Trans. Nonferrous Met. Soc. China, 24(4) (2014) 1187-1195.

J. Ding, S. Ma, S. Shen, Z. Xie, S. Zheng, Y. Zhang, Waste Manage., 60 (2017) 375-387.

R. Zhang, S. Zheng, S. Ma, Y. Zhang, J. Hazard. Mater., 189(3) (2011) 827-835.

G. Bai, T. Wei, X. Wang, J. Qin, X. Peng, P. Li, Trans. Nonferrous Met. Soc. China, 20 (2010) s169-s175.

J.M. Sun, P. Chen, Adv. Mater. Res., 652 (2013), 2570-2575.

A. Seidel, Y. Zimmels, Chem. Eng. Sci., 53(22) (1998) 3835-3852.

G. Bai, Y. Qiao, B. Shen, S. Chen, Fuel Process. Technol., 92(6) (2011) 1213-1219.

C. Wu, H. Yu, H. Zhang, Trans. Nonferrous Met. Soc. China, 22(9) (2012) 2282-2288.

F. Luo, C. Wei, B. Xue, S. Wang, Y. Jiang, Res. Chem. Intermed. 39(2) (2013) 693-705.

S. Bi, H. Yu, Alumina Production Process, Chemical Industry Press, Beijing, 2006 (in Chinese).

R. Zhang, S. Ma, Q. Yang, S. Zheng, Y. Zhang, N. Kim, S. Hydrometallurgy, 108(3-4) (2011) 205-213.

J. Ding, Z. Tang, S. Ma, Y. Wang, S. Zheng, Y. Zhang, S. Shen, Z. Xie, Cem. Concr. Compos., 65 (2016) 11-18.

Z. Wang, S. Ma, Z. Tang, X. Wang, S. Zheng, J. Hazard. Mater., 308 (2016) 253-263.

DZ/T 0064.49-93., Test method of groundwater quality, Ministry of Geology and Mineral Resources of China, 1993 (in Chinese).

P. Faucon, T. Charpentier, A. Nonat, J. Petit, J. Am. Chem. Soc., 120(46) (1998) 12075-12082.

H. Viallis, P. Faucon, J.-C. Petit, A. Nonat, J. Phys. Chem. B, 103(25) (1999) 5212-5219.

Z. Wang, S. Ma, S. Zheng, X. Wang, J. Am. Ceram. Soc., 100(2) (2017) 792-799.

G. Renaudin, J. Russias, F. Leroux, C. Cau-dit-Coumes, F. Frizon, J. Solid State Chem., 182(12) (2009) 3320-3329.

G. Sun, J.F. Young, R.J. Kirkpatrick, Cem. and Concr. Res., 36(1) (2006) 18-29.

M.D. Andersen, H.J. Jakobsen, J. Skibsted, Inorg. Chem., 42(7) (2003) 2280-2287.

Published
2018/10/17
How to Cite
Wang, Z., Zheng, S., Ma, S., Ding, J., & Wang, X. (2018). RECOVERY OF SODIUM FROM ALUMINA-EXTRACTED FLY ASH USING CONCENTRATED SODIUM CARBONATE SOLUTION. Journal of Mining and Metallurgy, Section B: Metallurgy, 54(2), 225. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/16791
Issue
Vol. 54 No. 2 (2018)
Section
Original Scientific Paper

Authors retain copyright of the published papers and grant to the publisher the non-exclusive right to publish the article, to be cited as its original publisher in case of reuse, and to distribute it in all forms and media.

The Author(s) warrant that their manuscript is their original work that has not been published before; that it is not under consideration for publication elsewhere; and that its publication has been approved by all co-authors, if any, as well as tacitly or explicitly by the responsible authorities at the institution where the work was carried out. The Author(s) affirm that the article contains no unfounded or unlawful statements and does not violate the rights of others. The author(s) also affirm that they hold no conflict of interest that may affect the integrity of the Manuscript and the validity of the findings presented in it. The Corresponding author, as the signing author, warrants that he/she has full power to make this grant on behalf of the Author(s). Any software contained in the Supplemental Materials is free from viruses, contaminants or worms.

The published articles will be distributed under the Creative Commons Attribution ShareAlike 4.0 International license (CC BY-SA).

Authors are permitted to deposit publisher's version (PDF) of their work in an institutional repository, subject-based repository, author's personal website (including social networking sites, such as ResearchGate, Academia.edu, etc.), and/or departmental website at any time after publication.

Upon receiving the proofs, the Author(s) agree to promptly check the proofs carefully, correct any typographical errors, and authorize the publication of the corrected proofs.

The Corresponding author agrees to inform his/her co-authors, of any of the above terms.