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| CHANGES IN COMPOSITION DURING A. C. ESR——Ⅱ. Laboratory Results and Analysis |
| WEI Jiho (Wei Chi-ho)(Xi'an Institute of Metallurgy and Construction Engineering); MITCHELL A. (University of British Columbia; Vancouver; B. C. ; Canada) (Manuscript received 27 May; 1983) |
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Cite this article:
WEI Jiho (Wei Chi-ho)(Xi'an Institute of Metallurgy and Construction Engineering); MITCHELL A. (University of British Columbia; Vancouver; B. C. ; Canada) (Manuscript received 27 May; 1983). CHANGES IN COMPOSITION DURING A. C. ESR——Ⅱ. Laboratory Results and Analysis. Acta Metall Sin, 1984, 20(5): 406-413.
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Abstract The applicability of the new model developed in Part Ⅰ of this work for the chemical reactions and mass transfer processes during the ESR is considered to the laboratory experiments of A. C. ESR of SAE 1020. The remelting experiments were carried out on the U. B. C. 250 kVA ESR furnace of It capacity using water cooled moulds of 200 mm nominal diameter, with an electrode diameter of 76 mm, and used two kinds of slag system: CaF_2+30wt-% Al_2O_3(under Ar) and 50 wt-% CaF+2+30wt-% Al_2O_3+20 wt-% CaO(in air). After the remelting process reached a steady state the system was made to undergo discontinuous oxidation-reduction reactions by point additions of either FeO or Ca powder. The model is used to predict the ingot and slag compostion. The results show that the model is in good agreement with those of practical ESR processes under the experimental conditions.
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Received: 18 May 1984
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1 Wei Chi-ho (魏季和), Mitchell, A. , The Application of the Mass Transfer Model to the ESR Process on an Industrial Unit, to be published.
2 #12
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7 Fraser, M. E. , Ph. D. thesis, University of British Columbia, 1974．
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9 Sasabe, M. ; Kinoshita, Y. , Trans. Iron Steel Inst. Jpn. , 20 (1980) , 801．
10 Cooper, C. K. ; Ghosh, D. ; Kay, D. A R. ; Pomfret, R. J. , Electr. Furnace Conf. Proc. , 28 (1970) , 28．
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12 Mitchell, A. ; Beynon, G. , Metall. Trans. , 2 (1971) . 3333．
13 Mitchell, A. ; Fraser, M. E. , Metal-Slag-Gas Reactions and Processes, Eds. Foroulis, Z. A. : Smeltzer, W. W. , Electrothcrmics and Metallurgy and Corrosion Division, 1975, p. 199．
14 Mitchell, A. ; Carmona, F. R. ; Wei, C. H. (魏季和), Iron Steelmaker, 9 (1982) , №3, 37． |
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