低碳钢生产模式下的转炉护炉工艺优化实践  

Optimization Practice of Converter Protecting Process in Low Carbon Steel Production Mode

作　　者：于国庆 Yu Guoqing(Steelmaking Plant of Sansteel Minguang Co.,Ltd.)

机构地区：[1]三钢闽光股份有限公司炼钢厂

出　　处：《宽厚板》2022年第4期35-37,45,共4页Wide and Heavy Plate

摘　　要：分析低碳钢生产模式下转炉炉衬侵蚀的影响因素,通过优化低碳钢转炉冶炼过程渣料结构、溅渣调渣工艺、转炉底吹工艺与转炉终点拉碳工艺等措施,使得转炉终渣TFe含量由17.7%降低到16.36%,转炉终点温度、碳含量、磷含量三命中率提高了26.64%,转炉终点碳氧积下降了7.7×10^(-4),转炉炉底厚度极差由335 mm减小到100 mm,降低了终渣的氧化性,提高了护炉效果,稳定了转炉炉型控制。The factors influencing the erosion of converter lining in low carbon steel production mode are analyzed.By taking optimization measures of the slag constituents,slag splashing and adjusting process,converter bottom blowing process and end-point carbon reducing process during converter smelting of low carbon steel,the TFe content of converter end-point slag is reduced from 17.7%to 16.36%.The three hit rate of temperature、C content and P content at the end-point of the converter is increased by 26.64%,the end-point carbon and oxygen product is decreased by 7.7×10^(-4),and the hearth thickness range of the converter is reduced from 335 mm to 100 mm,which reduces the oxidizability of the end-point slag,improves the protective effect and stabilizes the profile control of the converter.

关 键 词：底吹 侵蚀 FEO含量 

分 类 号：TF713[冶金工程—钢铁冶金]