Desulfurization Kinetics of High Lead-zinc Sulfur Slag with Oxygen

  • Kun OuYang School of Metallurgy, Northeastern University, Shenyang, 110819, China;
  • Zhi-he Dou School of Metallurgy, Northeastern University, Shenyang, 110819, China;
  • Ting-an Zhang School of Metallurgy, Northeastern University, Shenyang, 110819, China;
  • Yan Liu School of Metallurgy, Northeastern University, Shenyang, 110819, China;
  • Li-ping Niu School of Metallurgy, Northeastern University, Shenyang, 110819, China;

Abstract


Kinetics of the reaction of high lead-zinc sulfur slag (Pb-Zn-Fe-SiO2-CaO-S) with O2 gas was studied by monitoring the changes in slag sulfur content and weight when a stream of O2 gas was blown into the slag surface at temperature in the range of 1473 K to 1623 K. The results show the slag sulfur content decreased gradually, while spinel phase (ZnxFe3-xO4+y) emerged and increased during the desulfurization process. The desulfurization rates of molten slag were found to be the first-order kinetics. The results indicate that under the employed experimental conditions, the rate-limiting step was the interfacial mass transfer between the gas and liquid phase which fitted to the penetration model. The effects of oxidation temperature and injection gas flow on the desulfurization rate were also mentioned in the study.

Author Biographies

Zhi-he Dou, School of Metallurgy, Northeastern University, Shenyang, 110819, China;
School of Metallurgy, Northeastern University, professor.
Ting-an 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.
Li-ping Niu, School of Metallurgy, Northeastern University, Shenyang, 110819, China;
School of Metallurgy, Northeastern University, professor.

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Published
2019/07/25
How to Cite
OuYang, K., Dou, Z.- he, Zhang, T.- an, Liu, Y., & Niu, L.- ping. (2019). Desulfurization Kinetics of High Lead-zinc Sulfur Slag with Oxygen. Journal of Mining and Metallurgy, Section B: Metallurgy, 55(2), 187. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/20261
Issue
Vol. 55 No. 2 (2019)
Section
Original Scientific Paper

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