Effect of ZnO/PbO and Fe/SiO2 Ratio on Viscosity of Lead Smelting Slags

  • Kun OuYang School of Metallurgy, Northeastern University, Shenyang, 110819, China;
  • ZhiHe Dou School of Metallurgy, Northeastern University, Shenyang, 110819, China;
  • TingAn Zhang School of Metallurgy, Northeastern University, Shenyang, 110819, China;
  • Yan Liu School of Metallurgy, Northeastern University, Shenyang, 110819, China;

Abstract


Effect of ZnO/PbO and Fe/SiO2 on the viscosity of the PbO-ZnO-Fe3O4-SiO2-CaO slag was measured using the rotating spindle method. The slag viscosity decreased with decreasing ZnO/PbO mass ratio because of depolymerization of the silicate structures. The viscosity decreased with increasing Fe/SiO2 mass ratio as experimental temperature was above 1623 K, while the viscosity increased significantly with the increase of Fe/SiO2 as the experimental temperature below 1623 K because of phase transition and change of slag melting point. According to XRD analysis of as-quenched slag, the spinel and zincite phase increased with increasing Fe/SiO2. The increasing ZnO/PbO and Fe/SiO2 could enhance the crystallization capacity of the slag. FTIR analysis revealed that the degree of polymerization of the as-quenched slags decreased with decreasing ZnO/PbO and increasing Fe/SiO2. The temperature dependencies of the viscosity on ZnO/PbO and Fe/SiO2 were investigated, and the apparent activation energies of each system were found to be between 169.5 to 227.4 KJ/mol, and 151.1 to 676.4 KJ/mol, respectively.


Author Biographies

Kun OuYang, School of Metallurgy, Northeastern University, Shenyang, 110819, China;
School of Metallurgy, Northeastern University, Ph.D Candidates
ZhiHe Dou, School of Metallurgy, Northeastern University, Shenyang, 110819, China;
School of Metallurgy, Northeastern University, professor
TingAn Zhang, School of Metallurgy, Northeastern University, Shenyang, 110819, China;
School of Metallurgy, Northeastern University, professor
Yan Liu, School of Metallurgy, Northeastern University, Shenyang, 110819, China;
School of Metallurgy, Northeastern University, professor

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Published
2020/02/19
How to Cite
OuYang, K., Dou, Z., Zhang, T., & Liu, Y. (2020). Effect of ZnO/PbO and Fe/SiO2 Ratio on Viscosity of Lead Smelting Slags. Journal of Mining and Metallurgy, Section B: Metallurgy, 56(1), 27-33. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/22282
Issue
Vol. 56 No. 1 (2020)
Section
Original Scientific Paper

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