摘要
为理顺炉机对应关系、加快炼钢生产节奏,本钢转炉炼钢厂划出7条专业化生产线,以宽板坯低碳钢生产线为例,基于甘特图对转炉、RH、连铸的工序作业时间进行节奏匹配分析,指出转炉和连铸工序为原流程优化的目标。由此,采用提高转炉供氧强度、增加吹炼后期底吹流量、减少出钢和溅渣时间、优化浸入式水口结构、调整结晶器冷却水量、MM-EMS结晶器电磁控制、开发高拉速保护渣等工艺优化措施,并通过控制浇铸周期,转炉、RH、连铸3个工序的整体节奏从平均46 min精准地降至32~34 min,炼钢生产趋于高效、平稳、动态化、精准化。
To straighten out the correspondence between furnaces and casters and speed up the steelmaking production rhythm, seven specialized production lines were established in the BOF steelmaking plant of Bensteel. Taking the wide slab production line for low carbon steel as an example, the rhythm matching analysis on process time of BOF, RH and CCM was carried out based on GANTT diagram, which indicated that BOF and CCM were the goals of the original process optimization. By increasing the oxygen supply intensity, increasing the bottom blowing flow rate in the last stage of blowing, decreasing the tapping and slag splashing time, optimizing the submerged entry nozzle structure, adjusting the mold cooling water density, employing the mold electromagnetic control technique, developing high speed casting mold flux and controlling the casting cycle, the whole rhythm of three processes of BOF, RH and CCM was precisely reduced to 32-34 min from an average of 46 min. Consequently, the steelmaking production tended to be efficient, steady, dynamic and precise.
作者
李大鹏
LI Da-peng(State Laboratory of Advanced Steel Processing and Products,Central Iron and Steel Research Institute,Beijing 100081,China;Steelmaking Plant,Benxi Iron and Steel Group Co.,Ltd.,Benxi 117021,Liaoning,China)
出处
《中国冶金》
CAS
北大核心
2020年第2期33-39,共7页
China Metallurgy
基金
国家重点研发计划资助项目(2017YFB0304001).
关键词
宽板坯
低碳钢
专线化
节奏
精准化
wide slab
low carbon steel
specialized production line
rhythm
precision
作者简介
李大鹏(1977—),男,博士生,工程师,E-mail:lyuanqi1985@126.com
