Volatilization Characteristics of High-lead Slag and its Influence on Measurement of Physicochemical Properties at High Temperature

  • Guohua Wang School of metallurgical Engineering, Xi'an University of Architecture and Technology
  • Yaru Cui School of metallurgical Engineering, Xi'an University of Architecture and Technology
  • Zhe Yang School of metallurgical Engineering, Xi'an University of Architecture and Technology
  • Ziliang Guo School of Engineering, Xi'an University of Architecture and Technology；Mongolia Xinchuang Resources Recycling Co. Ltd.
  • Xiaoming Li School of metallurgical Engineering, Xi'an University of Architecture and Technology
  • Junxue Zhao School of metallurgical Engineering, Xi'an University of Architecture and Technology
  • Wendan Tang School of metallurgical Engineering, Xi'an University of Architecture and Technology

Abstract


Volatilization causes deviations in the measurement of physicochemical properties for volatiles-containing slag at high temperature. Hence, investigating the degree of volatility and identifying the volatilization mechanism and deviation rules are crucial to improving the accuracy of the measured properties. Here, PbO-FeOx-CaO-SiO2-ZnO slag was selected as a research subject. The volatile characteristics and non-isothermal intrinsic kinetic models of high-temperature volatilization for lead slags were established by thermogravimetric analysis (TGA), and the volatilization mechanism and deviation in the measured properties were determined by analyzing the phase and chemical composition of the residues. In addition experimental measurements of the melting temperature/viscosity were compared with theoretically calculated results. The volatilization of PbO decreases the lead-containing phase but increases the amount of precipitated spinel phase, which leads to the deviation in the measured physicochemical properties of the studied slags. The volatilization kinetics for PbO in the slags followed three-dimensional diffusion. The restrictive step of the volatile reaction is the diffusion of PbO gas, and its mechanism function is g(α)=1-(1-α)^(1/3). During the slag property measurements, a high heating rate and protective gas can be used to reduce volatilization and avoid consequent deviations in the properties measured at high temperatures

References

E. Jak, B. Zhao, P. C. Hayes, and I. Harvey, Metall. Mater. Trans. B, 34(4)(2003)383-397.

J. X. Zhao, B. L. Ge, Y. R. Cui, S.W. Liu, W. D. Tang and S. T. Qiu, Industrial Heating, 45(2)(2016)12-13.

T. P. Battle and J. P. Hager, Metall. Trans. B, 21(3)(1990)501-510.

Y. Li, Z. Liu, H. Liu, and B. Peng, J. Clean. Prod., 143(2017)311-318.

B. Vidacak, D. Sichen, and S. Seetharaman, Metall. Mater. Trans. B Process Metall. Mater. Process. Sci., 32(4)(2001)679-684.

S. Osada, M. Osada, M. Kokado, and M. Tokuda, J. Mater. Cycles Waste Manag, 15(5)(2004)353-362.

H. Nakada, N. Mihara, Y. Kawaguchi, S. Osada, D. Kuchar, and H. Matsuda, J. Mater. Cycles Waste Manag., 10(1)(2008)19-23.

X. Wang, Y. Huang, C. Liu. S. Zhang, Y. Wang and G. Pao, Fuel, 192(2017)1-9.

J.X. Zhao, Y.M. Chen, X.M. Li, Y.R. Cui, and X.T. Lu. J. Iron Steel Res. Int., 18(10) (2011)24-28.

Y.R. Cui, Z.L. Guo, A.l. Chen, K. M. Li, X. M. Li and J. X. Zhao, Chin. J. Rare Met., 40(09)(2016)928-933.

O. Takeda, T. Okawara, and Y. Sato, Isij Int., 52(2012)1544-1549.

Y.R. Cui, G.H. Wang, J.X. Zhao, Z.L. Guo, H.L. Tang and H.Y. Fan, Chin J Proc Eng, 18(2)(2018) 393-398.

Kumar Pal A , Das A , Katiyar V . Journal of Applied Polymer Science, 133(31)( 2016).

Z. Ouyang, Y. F. Chen, S. Y. Tian, L. Xiao, C. B. Tang, Y. J. Hu, Z. M. Xia, Y. M. Chen and L. G. Ye, J. Min. . Sect. B-Metall, 54(3)(2018)411-418.

D. Vamvuka, E. Kakaras, E. Kastanaki, and P. Grammelis, Fuel, 82(2003)1949-4960.

Z. Hu, Thermal Analysis Kinetics, 2nd Ed, Science Press, Beijing, 2008, p.8-9.

L. Xiang, F. Liu, J. Li, and Y. Jin, Mater. Chem. Phys., 87(2)( 2004)424-429.

Y.R. Cui, H.Y. Fan, Z.L. Guo, C.H. Man, G.H. Wang and J.X. Zhao, Nonferrous Metals, 9(4)(2019).

C. W. Bale, E. Bé, P. Chartrand, S. A. Decterov, G. Eriksson, A. E. Gheribi, K. Hack, I. H. Jung, Y. B. Kang, and J. Melançon, Calphad-Computer Coupling Phase Diagrams Thermochem., 54(2)(2016)35-53.

F. Jiao, L. Zhang, W. Song, Y. Meng, N. Yamada, A. Sato, and Y. Ninomiya, Proc. . Inst., 34 (2013)2821-2829.

C. H. Jung, T. Matsuto, and N. Tanaka, Waste Manag. 25(3)(2005) 301-310.

Cui Yaru, Gun Zilian, Chen Aoli, Li Kaimao, Li Xiaomin, Zhao Junxue. Chinese Journal of Rare Metals, 40(9)(2016)928-933.

Jak E and Hayes P C. Metall. Mater. Trans. B, 33(6)(2002)817-825.

Published
2020/02/19
How to Cite
Wang, G., Cui, Y., Yang, Z., Guo, Z., Li, X., Zhao, J., & Tang, W. (2020). Volatilization Characteristics of High-lead Slag and its Influence on Measurement of Physicochemical Properties at High Temperature. Journal of Mining and Metallurgy, Section B: Metallurgy, 56(1), 59-68. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/20644
Issue
Vol. 56 No. 1 (2020)
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.