摘要
结合脱硫反应热力学和动力学理论,对莱钢120t转炉冶炼过程及操作制度进行了分析研究,通过控制转炉回硫对深脱硫工艺流程进行了优化。结果表明:(1)通过控制转炉回硫,可将LF炉中钢水硫质量分数控制在0.005%以下,脱硫率可达80%以上,终点硫质量分数最低可达到0.001%,并且能够稳定生产硫质量分数小于0.005%的低硫钢种;(2)顶渣SiO2质量分数可控制在8%以下;(3)终点(FeO+MnO)质量分数和可降低到1%左右,碱度可控制在5～6之间。
Based on the thermodynamics and kinetics of desulphurization theory, an ultra-low sulfur converter steelmak- ing process and operation system in the Laigang 120 t converter system was analyzed. By controlling the converter resul- furization smelting, the deep desulfurization technological process was optimized. The results showed that the sulfur content can be reduced to below 0. 005%. The desulphurization rate can be increased to 80% and therefore the final sul- fur content could reach to 0. 001%. Consequently, low sulfur steel with sulfur content below 0. 005 % could be stably produced. In the following LF refining, SiO2 content in LF top slag could be reduced to below 8%. The final （FeO ＋ MnO） content could be reduced to about 1% and the alkalinity can be controlled between 5 and 6.
出处
《山东大学学报（工学版）》
CAS
北大核心
2010年第3期75-79,共5页
Journal of Shandong University（Engineering Science）
基金
2008年度山东省高等学校优秀青年教师国内访问学者计划资助项目
关键词
转炉回硫
顶渣改质
溅渣护炉
深脱硫
converter resulfurization
top slag improvement
slag splashing protection
deep desulfurization
