Abstract
The effect of cooling rate on phosphorus removal during Al-Si solvent refining is studied during solar grade silicon purification. It is found that the phosphorus removal rate is controlled by kinetic factors. When the cooling rate decreases, the phosphorus removal rate increases. A concept of apparent segregation coefficient of phosphorus is introduced to characterize the phosphorous removal ability. It increases with the decrease in the average solidification temperature between 910.5 K and 1050.5 K (637.5 °C and 777.5 °C).
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F. A. Trumbore: Bell System Tech. J., 1960, vol. 39, pp. 205-33.
D.C. Jiang, Y. Tan, S. Shi, W. Dong, Z. Gu and R.X. Zou: Mater. Lett., 2012, vol. 78, pp. 4-7.
K. Hanazawa, N. Yuge and Y. Kato: Mater. Trans., 2004, vol. 45, pp. 844-9.
Y. Tan, X.L. Guo, S. Shi, W. Dong and D.C. Jiang: Vacuum, 2013, vol. 93, pp. 65-70.
T. Yoshikawa and K. Morita: Sci. Technol. Adv. Mater., 2003, vol. 4, pp. 531-7.
T. Yoshikawa and K. Morita: ISIJ Int., 2005, vol. 45, pp. 967-71.
T. Yoshikawa and K. Morita: ISIJ Int., 2007, vol. 47, pp. 582-4.
W. Z. Yu, W. H. Ma, G. Q. Lv, Y. S. Ren, Y. N. Dai and K. Morita: Metall. Mater. Trans. B, 2014, vol. 45B, pp. 1573-8.
X. Gu, X.G. Yu and D.R. Yang: Sep. Purif. Technol., 2011, vol. 77, pp. 33-9.
K. Tang, E.J. Øvrelid, G. Tranell and M. Tangstad: Mater. Trans., 2009, vol. 50, pp. 1978-84.
P.P. Wang, H.M. Lu and Y.S. Lai: J. Cryst. Growth, 2014, vol. 390, pp. 96-100.
J. L. Murray and A. J. Mcalister: Bull. Alloy phase Diag., 1984, vol. 5, pp. 74-84.
S. Esfahani and M. Barati: Met. Mater. Int., 2011, vol. 17, pp. 823-9.
S. M. Liang and R. Schmid-Fetzer: Calphad, 2013, vol. 42, pp. 76-85.
X. F. Liu, J. G. Qiao, Y. Y. Wu, Xi J. Liu and X. F. Bian: J. Alloy. Compd., 2005, vol. 388, pp. 83-90.
This work was financially supported by “100-talent Program” of Chinese Academy of Sciences; National Basic Research Program of China (No. 2011CBA00700); National Natural Science Foundation of China (Nos. 51404231 and 51474201); Science Fund of Institute of Plasma Physics, Chinese Academy of Sciences (Nos. 095YZ31222 and Y35QT10894) and China Postdoctoral Science Foundation (No. 2014M561846).
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Manuscript submitted June 16, 2014.
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Li, Y., Ban, B., Li, J. et al. Effect of Cooling Rate on Phosphorus Removal During Al-Si Solvent Refining. Metall Mater Trans B 46, 542–544 (2015). https://doi.org/10.1007/s11663-015-0291-4
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DOI: https://doi.org/10.1007/s11663-015-0291-4