Abstract
The silicon pick-up of interstitial-free steel (IF steel) from resin bonded MgO-SiC refractories is studied via a medium frequency induction furnace. Samples of IF steel were heated in MgO-SiC crucibles with mould flux cover at 1 600 °C for 180 min. The silicon contents of IF steel samples taken from the molten steel in every 30 min were examined and the refractories after heating were investigated by electron probe microanalysis (EPMA) with energy dispersive spectrometer (EDS). The silicon content of steel rapidly increased in the first 90 min of heating, and then decreased because of the formation of liquid layer on the refractory. Liquid layer separated the liquid steel from the bulk refractory and stopped the pick-up of silicon. At the same time, dedication via oxygen through the liquid layer and flux started to reduce the silicon content of the liquid steel.
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References
LI Nan. Interactions Between Refractories and Steel and Its Influence on the Property of Steel [M]. Beijing: Metallurgical Industrial Publishing Company, 2005 (in Chinese).
HUANG Xiao-yun, YE Zhong-chao. Consideration of Silicon Content Control for Production of ULC Steel [J]. Research on Iron and Steel, 1997, 4: 3 (in Chinese).
LI Jun, WANG Jian, ZHONG Xiang-chong. Mechanical Properties and Thermal Shock Resistance of MgO-SiC Composites [J]. Naihuo Cailiao, 2000, 34(2): 86 (in Chinese).
TAO Gui-hua, LI Nan. Study on Slag Resistance of MgO-SiC Composites Bonded by Mircosilica [J]. Naihuo Cailiao, 2003, 37(6): 342 (in Chinese).
LI Gai-ye, LI Nan. Effects of SiC Content on the Anti-Oxidation Property of Al2O3-SiC Composite Material [J]. Naihuo Cailiao, 2004, 38(6): 439 (in Chinese).
Potachke J, Beimdiek K, Ollig M. Reaction Between MgO-C Bricks and Steel Melt [A]. UNITECR’99 [C]. Berlin, Germany: Stahleisen Verlag Publisher, 1999. 166.
Soulard H, Lehmann J, Boher M. Interaction Mechanism Between MgO-C and Al-Killed Steels [A]. UNITECR’99 [C]. Berlin, Germany: Stahleisen Verlag Publisher, 1999. 301.
LI Nan, LI L H, WEI Yao-wu. Effects of Mircosilica in MgO Based Castables on Oxygen Content of Interstitial-Free Steel [J]. Br CeramTrans, 2003, 103(4): 175.
RUAN G Z, LI N. Carbon Pickup of Interstitial-Free Steel From Al2O3-C Refractories [J]. Ironmaking and Steelmaking, 2004, 31(4): 342.
CHEN Xiang-wu. Deoxidization in Steelmaking Process [M]. Beijing, China: Metallurgical Industrial Publishing Company, 1991 (in Chinese).
ZHAO Jun-xue. Principle of Metallurgy [M]. Xi’an, China: Northwestern Polytechnical University Publishing Company, 2002 (in Chinese).
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Wei, Yw., Li, N., Chen, Xx. et al. Silicon Pick-up of Interstitial-Free Steel From MgO-Sic Refractories. J. Iron Steel Res. Int. 15, 92–94 (2008). https://doi.org/10.1016/S1006-706X(08)60133-8
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DOI: https://doi.org/10.1016/S1006-706X(08)60133-8