Slag for Decopperization and Sulphur Control in Molten Steel

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• 作者：Jian-jun WANG ; Shang-xing GUO ; Li ZHOU ; Qiang LI
• 关键词：molten steel ; decopperization ; FeS
• 刊名：Journal of Iron and Steel Research, International
• 出版年：2009
• 出版时间：March 2009
• 年：2009
• 卷：16
• 期：2
• 页码：17-21
• 全文大小：280 K

文摘

Decopperization in molten steel with FeS-Na₂S slag was investigated in the laboratory. It was found that with an increase in FeS content of the FeS-Na₂S slag, the decopperization ratio increased. The decopperization ratio could reach the maximum of 71. 6 % in hot metal. The decopperization ratio was closely related to the carbon content, and the higher the carbon content, the higher was the decopperization ratio. Sulphur addition was found in the process of decopperization, and the increase in sulphur content of molten steel was about 0. 2 % − 0. 42 % . However, by adding 30 % − 50 % of BaO to the FeS-Na₂S slag, the addition of sulfur content in molten steel could be reduced by about 50 % . The finer slag system composition was FeS : Na_zS : BaO=40 = 20 : 40.