Abstract
The mass loss rate of CaF2-CaO-Al2O3-SiO2-MgO slag system originated from ANF-6 was studied with CaF2, CaO, Al2O3, SiO2 or MgO content as variables. The method of quadratic regression orthogonal design was used for the design and analysis of the experiment. The experimental results indicated that mass loss rate of slag can be increased by 6% with CaF2 changing from 50% to 65%. Mass loss increases with SiO2, Al2O3 and MgO adding and decreases with CaO content increasing. Because of the reaction between oxide and fluoride in the slag pool, apparent mass loss of CaF2-Al2O3-CaO-SiO2-MgO slag system appears at melting point. This will cause obvious composition change of electroslag. In addition, the segregation occurs in the slag skin forming process. This is another reason causing the composition change of electroslag.
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References
LIANG Lian-ke, YANG Huai. Physical-Chemistry Properties and Application of Electroslag Remelting [M]. Shenyang: Northeastern University Press, 1990 (in Chinese).
LI Zheng-bang, ZHANG Jia-wen, LIN Gong-wen. Translations of ESR [M]. Beijing: Metallurgical Industry Press, 1990 (in Chinese).
YAO Jun-ping, GENG Mao-peng, MA Xin-sheng, et al. Research on the Delaminating Phenomenon of Slag Skin During Electroslag Casting [J]. Foundry Technology, 2004, 25(2): 113 (in Chinese).
MAO Hong-xiang, HU Han-tao, MA Guo-jun, et al. Contamination of Fluorine in CC Mould Powder to Environment and Countermeasures [J]. Steelmaking, 1999, 15(3): 41 (in Chinese).
SHEN Xing. Thermo Gravimetric Analysis and Non-Isothermal Kinetics of Solid-Phase [M]. Beijing: Metallurgical Industry Press, 1995 (in Chinese).
GU Tang-sheng, LIN Guang-ming. Phase Transformation and Infrared Absorption Spectra of Amorphous and Crystalline Nano-Al2O3 Powder [J]. Journal of Inorganic Materials, 1997, 12(6): 840 (in Chinese).
PAN Bao-Ju. Facies Iron and Steel Technology [M]. Beijing: Metallurgical Industry Press, 1977 (in Chinese).
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Foundation Item: Item Sponsored by National Natural Science Foundation of China (50644040)
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Zhao, Jx., Chen, Ym., Li, Xm. et al. Mechanism of Slag Composition Change During Electroslag Remelting Process. J. Iron Steel Res. Int. 18, 24–28 (2011). https://doi.org/10.1016/S1006-706X(12)60017-X
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DOI: https://doi.org/10.1016/S1006-706X(12)60017-X