【作者】 董献； 刘建华； 包燕平； 杨伶俐； 任毅； 张帅； 徐光； 张晓军；

【Author】 Dong Xian, Liu Jianhua, Bao Yanping, Yang Lingli, Ren Yi, Zhang Shuai, Xu Guang, Zhang Xiaojun (School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China; Technology Center of ANSC, Anshan 114001, China; New Iron and Steel Company ofANSC, Anshan 114001, China)

【机构】 北京科技大学冶金与生态工程学院； 鞍钢技术中心； 鞍钢新钢铁公司；

【摘要】 针对鞍钢-炼钢LD-LF-VD-CC的管线钢冶炼工艺,对炼钢各工序氮含量变化进行取样分析。研究发现:出钢、吹氩及镇静过程和LF处理过程是增氮的主要环节:出钢时采用强脱氧容易引起钢液增氮;减少出钢后钢水镇静时间和LF精炼时间、造好泡沫渣、加强非稳态浇铸期保护浇铸操作是控制鞍钢管线钢增氮的关键。更多还原

【Abstract】 The analysis of nitrogen concentration changes in each section through LD-LF-VD-CC pipeline steelmaking process indicates that the most important process of nitrogen content controlling is the BOF tapping process and LF refining process. Aluminium additions as a deoxidizer have an unfavorable effect on denitrogenation; Reducing the resting time after tapping and the LF processing time is the key to control Nitrogen content. Foaming slag in LF process and the steady operating in continuous casting is necessary to be strengthened.更多还原