Levitation refining of stainless steel by using Ar-CO2 gas mixture
LI Xiang1，ZHANG Gui-fang1,2，YANG Yin-dong1,3，SHI Zhe1,2，GAO Lei1
（1. Faculty of Metallurgical and Energy Engineering， Kunming University of Science and Technology， Kunming 650093， Yunnan， China 2. Yunnan Provincial Key Laboratory of Complex Iron Resources for Clean Metallurgy，Kunming 650093， Yunnan， China 3. Department of Materials Science and Engineering of University of Toronto，Toronto M5S 2E8， Ontario， Canada
Abstract：The objectives of the present work are focused on reducing the cost of stainless steel production and recycling carbon dioxide in steelmaking process.This paper proposed a method that can removal carbon and sulphur by using levitation refining stainless steel， and analyzed of?the principle of decarburization and desulfurization in the levitation refining of stainless steel melt with kinetic aspects. Results indicated that CO2 can be used to replace O2 in stainless steel refining and[w(C)]can be removed into 0.04% in the condition of the less volatile components. Desulfurization effect was related to sample[w(C)，]the higher[w(C)，]the better desulfurization effect. The[w(Cr)]of the sample was almost a constant when changed the parameters such as gas flow rate and CO2 partial pressure，which meant using carbon dioxide can levitation refining the stainless steel without significant loss of chromium.
李 想，张桂芳，杨印东，施 哲，高 磊. 使用CO2-Ar混合气体悬浮精炼不锈钢[J]. 钢铁, 2017, 52(2): 28-32.
LI Xiang，ZHANG Gui-fang，，YANG Yin-dong，，SHI Zhe，，GAO Lei. Levitation refining of stainless steel by using Ar-CO2 gas mixture. Iron and Steel, 2017, 52(2): 28-32.
2017, Vol. 52 
