Experimental study on the thermal volatilization and condensation of zinc at 10 Pa and 200 Pa

Wei Zhang; Yang Tian; Da-Chun Liu; Fei Wang; Bin Yang; Bao-Qiang Xu

Journal of Materials Research and Technology (May 2020)

Experimental study on the thermal volatilization and condensation of zinc at 10 Pa and 200 Pa

Wei Zhang,
Yang Tian,
Da-Chun Liu,
Fei Wang,
Bin Yang,
Bao-Qiang Xu

Affiliations

Wei Zhang: State Key Laboratory of Complex Non-ferrous Metal Resources Clear Utilization, Kunming University of Science and Technology, Kunming 650093, China; National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China; Key Laboratory of Vacuum Metallurgy for Nonferrous Metal of Yunnan Province, Kunming University of Science and Technology, Kunming 650093, China; School of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
Yang Tian: State Key Laboratory of Complex Non-ferrous Metal Resources Clear Utilization, Kunming University of Science and Technology, Kunming 650093, China; National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China; Key Laboratory of Vacuum Metallurgy for Nonferrous Metal of Yunnan Province, Kunming University of Science and Technology, Kunming 650093, China; School of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China; Corresponding authors at: School of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China.
Da-Chun Liu: State Key Laboratory of Complex Non-ferrous Metal Resources Clear Utilization, Kunming University of Science and Technology, Kunming 650093, China; National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China; Key Laboratory of Vacuum Metallurgy for Nonferrous Metal of Yunnan Province, Kunming University of Science and Technology, Kunming 650093, China; School of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
Fei Wang: State Key Laboratory of Complex Non-ferrous Metal Resources Clear Utilization, Kunming University of Science and Technology, Kunming 650093, China; National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China; Key Laboratory of Vacuum Metallurgy for Nonferrous Metal of Yunnan Province, Kunming University of Science and Technology, Kunming 650093, China; School of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China; Corresponding authors at: School of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China.
Bin Yang: State Key Laboratory of Complex Non-ferrous Metal Resources Clear Utilization, Kunming University of Science and Technology, Kunming 650093, China; National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China; Key Laboratory of Vacuum Metallurgy for Nonferrous Metal of Yunnan Province, Kunming University of Science and Technology, Kunming 650093, China; School of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
Bao-Qiang Xu: State Key Laboratory of Complex Non-ferrous Metal Resources Clear Utilization, Kunming University of Science and Technology, Kunming 650093, China; National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China; Key Laboratory of Vacuum Metallurgy for Nonferrous Metal of Yunnan Province, Kunming University of Science and Technology, Kunming 650093, China; School of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China

Journal volume & issue: Vol. 9, no. 3
pp. 3590 – 3597

Abstract

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The thermal volatilization and condensation of zinc at different heating temperatures were investigated at 10 Pa and 200 Pa. The vacuum technique is beneficial for the volatilization of metallic zinc, and the zinc volatilization is affected by heat transfer and mass transfer. The effect of zinc partial pressure on the nucleation is analyzed in terms of the average number of collisions of molecules. When the system pressure is 10 Pa, the range of the condensation temperature of (623–503 K) does not change with the change of the heating temperature, which is consistent with the pressure on the average number of collisions of zinc molecules per unit time. In addition, when argon gas is introduced into the system to keep the pressure at 200 Pa, the condensation temperature ranges becomes different and the heating temperature is linear with the condensation initiation temperature. The condensation mechanism of condensed products is different at different axial distances of 1023 K under 10 Pa and 200 Pa. The morphology and the particle size of the products are different under different system pressures, respectively.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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