工程科学学报2016，Vol.38Issue(z1)：32-36,5.DOI:10.13374/j.issn2095-9389.2016.s1.006
钙处理过程夹杂物演变及热力学分析
Evolution of inclusions during calcium treatment in liquid steel and its thermodynamic analysis
蔡小锋 1包燕平 1林路1
作者信息
- 1. 北京科技大学钢铁冶金新技术国家重点实验室，北京100083
- 折叠
摘要
Abstract
The morphologies and compositions of typical inclusions in liquid steel before and after calcium treatment were ob-served to study the evolution mechanism of non-metallic inclusions during calcium treatment. The process of calcium treatment could be modified by thermodynamic analysis. Results show that irregular solid inclusions finally change into spherical inclusions after calci-um treatment. When the mass fraction of aluminum in liquid steel is 0. 03% at 1873 K, the mass fractions of oxygen and calcium should be controlled in the range of 5í10 -6 ~17í10 -6 and 0. 7í10 -6 ~30í10 -6 , respectively. Inclusions in liquid steel can be modified effectively. When the mass fraction of sulfur in liquid steel at 1873 K is in the range of 6í10 -6 ~19í10 -6 , liquid calcium aluminate inclusions can be formed via Al2 O3 , and the formation of CaS can be decreased.关键词
钙处理/夹杂物/演变/热力学分析Key words
calcium treatment/inclusions/evolution/thermodynamic analysis分类
矿业与冶金引用本文复制引用
蔡小锋,包燕平,林路..钙处理过程夹杂物演变及热力学分析[J].工程科学学报,2016,38(z1):32-36,5.
