蒋国昌
,
徐匡迪
,
邓健雄
,
郭占成
,
关玉龙
金属学报
直接由电化学原理导出的电化学模型,以及给出的初始渣钢界面氧位计算方法,可用以定量描述％S～τ曲线。计算与实测吻合。脱硫过程中渣钢界面上硫的分配常数L_S~*和渣钢本体内硫的分配指数L′_S随界面氧位的下降而不断变化,其规律截然不同:L_S~*～τ曲线属抛物线类型,而L′_S～τ曲线属双曲线类型。与此相应,计算及实测都指出,驱动力参数随时间而变化的曲线呈现一驼峰。
关键词:
渣钢界面
,
metal-slag interface
,
electrochemical model
JIANG Guochang XU Kuangdi DENG Jianxiong Shanghai University of Technology
,
Shanghai
,
ChinaGUO Zhancheng GUAN Yulong Beiiing University of Science and Technology
,
Beijing
,
China Jiang Guochang Associate Professor
,
The Institute of Metallurgy and Materials
,
Shanghai University of Technology
,
Shanghai 200072
,
China
金属学报(英文版)
The curve of % S vs reaction time is described quantitatively based on the electrochemical model directly deduced from the principle of electrochemistry as well as the given method for calculating the initial oxygen potential along slag/steel interface.The calculated data is in good agreement with the experimental results. During desulphurization,both L_s~* and L_s,the sulphur partition along the interface and that in the bulk,go up in association with the descending of oxygen potential along interface. The plot of L_s~* against reaction time follows a parabolic curve,while that of L_s is of hyperbola type.Correspondingly,on curves of driving force parameter vs reaction tone,either calculated or experimental,a hump occurs.
关键词:
slag/steel interface
,
null
,
null
