摘要
基于LF精炼过程底吹CO2气体搅拌机制的研究,利用75tLF精炼炉进行底吹不同比例CO2与Ar混合气体的探索性工业试验。结果表明:底吹CO2气体使钢液搅拌增强,脱硫率由49.7%提高到65.1%,炉渣平均(FeO)质量分数均小于0.5%,满足精炼过程对炉渣氧化性的要求。钢液中夹杂物的种类、形貌和组成变化较小,夹杂物当量密度减小,钢液洁净度提高,试验表明LF炉可使用CO2气体进行精炼。
The stirring mechanism of bottom blowing COz was investigated and some exploratory experiments were conducted with different proportion of CO2 during the 75 t LF refining process in industry. The results show that bottom blowing CO2 can intensify liquid steel agitation and the desulfurization efficiency increases from 49.70% to 65.1%, the mass fraction of FeO is less than 0. 5% in the slag so it can meet oxidizing requirements. Compared with bottom blowing At, the equal yield density of inclusions decreases and the cleanness of steel is improved, so it is possible for LF to use CO2.
出处
《钢铁》
CAS
CSCD
北大核心
2013年第8期34-39,共6页
Iron and Steel
基金
"十二五"国家科技支撑计划资助项目(2012BAC27B01)
关键词
LF
CO2
脱硫
洁净度
ladle furnace
CO2
desulphurizatiom cleanness
