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| AN INVESTIGATION OF MECHANISM ON THE REMOVAL OF OXIDE INCLUSIONS DURING ESR PROCESS |
| Fu Jie Beijing Institute of Iron and Steel Technology |
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Cite this article:
Fu Jie Beijing Institute of Iron and Steel Technology. AN INVESTIGATION OF MECHANISM ON THE REMOVAL OF OXIDE INCLUSIONS DURING ESR PROCESS. Acta Metall Sin, 1979, 15(4): 526-539.
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Abstract The mechanism on the removal of oxide inclusions during ESR process hasbeen investigated. The alumina inclusions may effectively migrate from moltenmetal into CaF_2-Al_2O_3-SiO_3 liquid slag pool contained 30% alumina and 7%silica. The oxidation of Al by SiO_2 at the slag/metal interface did not result anincrease of alumina inclusions in metal. Atmospheric oxygen was found to be de-leterious for the removal of alumina inclusions. It has been proposed that thevariation of interface energy may directly affect the behaviour of oxide inclusions inESR process. The thermodynamic requirements for removal of oxide inclusionsby the slag/metal interaction should be: ΔF=(c-σ_(m/i))2πRh+σ_(m/s)πr~2<0where σ_(s/i), σ_(m/i) and σ_(m/s)——interface energy of slag/inclusion, metal/inclusionand metal/slag interaction respectively. From viewpoint of interface enrgy, an explanation would be possible to cla-rity why the migration of the oxide inclusion clusters tends to stay along the freesurface of metal or the refractory/metal interface.
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Received: 18 April 1979
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[1] 1960, № 9, 17．
[2] 傅杰,朱觉,金属学报,7(1964) ,250．
[3] 1968, № 3, 57．
[4] 傅杰,曲英等编译,电渣冶金文集,中国工业出版社,1965年,p.167．
[5] 1971, № 12, 14．
[6] 1968． № 2, 115．
[7] Hans-Jurger, K., Mathis, P. und Chondhurg, A., Arch. Eisenhuettenw., 41 (1971) , 299．
[8] Kay, D. A. R. and Pomfret, R. J., J. Iron Steel Inst., London, 209 (1971) , 962．
[9] Mitchell, A. and Burel, B., Met. Trans., 1 (1970) , 2253．
[10] 1975, № 3, 62．
[11] 1970, № 6, 36．
[12] Elliott, J. F., Lguchi, Y. and Chiang, T. H., Elec. Furnace. Proc., 35 (1977) , 268．
[13] 1974, № 6, 68．
[14] 傅杰,陈恩普, 朱觉,金属学报,8(1965) ,8．
[15] 1963, 72．
[16] Fraser, M. E. and Mitchell, A., Ironmaking Steelmaking, 3 (1976) , 279．
[17] 1968, № 2, 9．
[18] 1976, № 4, 71．
[19] 1971, № 11,18． |
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