Weiqing Chen, Dongyan Wang, Rongzhang Zhou, and Zongcai Lin, Kinetics of Evaporation of Zn and Pb from Carbon-bearing Pellets Made of Dust Containing Zn-Pb-Fe Oxides, J. Univ. Sci. Technol. Beijing, 7(2000), No. 3, pp. 178-183.
Cite this article as:
Weiqing Chen, Dongyan Wang, Rongzhang Zhou, and Zongcai Lin, Kinetics of Evaporation of Zn and Pb from Carbon-bearing Pellets Made of Dust Containing Zn-Pb-Fe Oxides, J. Univ. Sci. Technol. Beijing, 7(2000), No. 3, pp. 178-183.
Weiqing Chen, Dongyan Wang, Rongzhang Zhou, and Zongcai Lin, Kinetics of Evaporation of Zn and Pb from Carbon-bearing Pellets Made of Dust Containing Zn-Pb-Fe Oxides, J. Univ. Sci. Technol. Beijing, 7(2000), No. 3, pp. 178-183.
Citation:
Weiqing Chen, Dongyan Wang, Rongzhang Zhou, and Zongcai Lin, Kinetics of Evaporation of Zn and Pb from Carbon-bearing Pellets Made of Dust Containing Zn-Pb-Fe Oxides, J. Univ. Sci. Technol. Beijing, 7(2000), No. 3, pp. 178-183.
Metallurgy School, University of Science and Technology Beijing, Beijing 100083, China
中文摘要
The influence of reduction temperature, size of coal powder and the carbon content on the evaporation rates of Zn and Pb in pellets made of ZnO-PbO-FeO bearing dust has been investigated between 1100-1300℃. The evaporation rate of Zn and Pb obtained from the experiments has been analyzed with kinetic models. The results show that the control step for evaporation of Zn is reduction reaction of ZnO by CO at the interface,and that the evaporation rate of Pb is controlled by the volatilization of reduction products, i.e. liquid lead. The overall apparent activation energies of Zn and Pb evaporation from the pellet are 79.42kJ/mol and 88.74kJ/mol respectively.
The influence of reduction temperature, size of coal powder and the carbon content on the evaporation rates of Zn and Pb in pellets made of ZnO-PbO-FeO bearing dust has been investigated between 1100-1300℃. The evaporation rate of Zn and Pb obtained from the experiments has been analyzed with kinetic models. The results show that the control step for evaporation of Zn is reduction reaction of ZnO by CO at the interface,and that the evaporation rate of Pb is controlled by the volatilization of reduction products, i.e. liquid lead. The overall apparent activation energies of Zn and Pb evaporation from the pellet are 79.42kJ/mol and 88.74kJ/mol respectively.
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