Research on Refining Technology of Clean Steel in a Plasma Ladle Furnace

摘要：

　　The clean steel refining tests carried out in a 100 kg plasma ladle furnace(PLF)were to show the metallurgical effects of the different plasma gases such as Ar-H2 and Ar-CO2.The variations of carbon,nitrogen contents in steels and the mechanism of denitrogenation were studied.Compared with the conventional ladle furnace,when the plasma gases were injected into the ladle furnace,there was a decarburization process,the carburetion rates were reduced obviously.The carburetion rate is 3.6×10-6 per minute for the steel heated by conventional LF,and is 2.20 and 1.35 times of the heats blown 85%Ar-15%H2 and 85%Ar-15%CO2,respectively.When the plasma ladle furnace operated with Ar-H2 plasma gas,the denitrogenation of the molten steel occurs.The lowest denitrogenation rate is 0.30×10-6 per minute when Ar-H2 gas mixtures were used.The main reactant gas is monatomic hydrogen and the main product of denitrogenation is NH3 for Ar-H2 injection.

关键词： steelmaking Plasma Ladle Furnace decarburization denitrogenation clean steel

作者: ZHAN Dong-ping LI Feng-gong ZHANG Hui-shu JIANG Zhou-hua HE Ji-cheng

作者单位: School of Materials & Metallurgy.Northeastern University,Shenyang 110004,China

会议类型: 国际会议

会议名称: The 7th International Conference on Electromagnetic Processing of Materials(第七届冶金与材料电磁过程国际大会)

会议地点: 北京

会议语种:英文

页码: 1-5

在线出版日期: 2012-10-22（万方平台首次上网日期，不代表论文的发表时间）