Abstract

The rather long period of processing deoxidized steel in a chamber degasser is often combined with metal desulfurization. The results of degassing of ultralow-sulfur pipe steel under a refining slag in a 180-ton steel-teeming ladle are presented. The influence of such factors as a decrease in the melt temperature and changes in the phase chemical composition and the slag mass on the desulfurization parameters is analyzed. At the end of degassing, the equilibrium partition ratio of sulfur between slag and metal is shown to decrease significantly, and the actual partition ratios of sulfur approach the equilibrium one. During vacuum treatment, a decrease in the sulfur content is detected both in the slag and in the metal. The element partition balance between the slag and the metal shows that the decrease in the sulfur content in the slag is caused by an increase in its mass and a decrease in the total sulfur content in the slag–metal system. The influence of the deoxidized-steel degassing conditions on the degree of sulfur removal from the slag into the gas phase is estimated.

中文翻译：

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炉膛脱气过程中的深部钢脱硫

摘要

在室式脱气机中处理脱氧钢的相当长的时间通常与金属脱硫相结合。介绍了在 180 吨钢包中在精炼渣下对超低硫管钢进行脱气的结果。分析了熔体温度降低、相化学成分和渣量变化等因素对脱硫参数的影响。在脱气结束时，硫在炉渣和金属之间的平衡分配比显着降低，实际硫的分配比接近平衡1。在真空处理过程中，在炉渣和金属中都检测到硫含量降低。炉渣和金属之间的元素分配平衡表明炉渣中硫含量的降低是由于炉渣-金属体系中其质量的增加和总硫含量的降低引起的。估计脱氧钢脱气条件对从炉渣中脱硫到气相的程度的影响。