摘要
为了解决LF深脱硫钢种钢包顶渣结壳的问题,对结壳炉次精炼渣成分及熔点进行分析,利用扫描电镜对结壳物进行微观形貌及物相研究。结果表明,由于炉渣熔点过高,冷却过程中析出物呈网状联结导致顶渣结壳。根据相图确定了降低熔点的精炼渣改质目标区域,基于渣量核算提出了两种优化后渣改质工艺方案,通过工业试验验证,优化后精炼渣可同时满足LF深脱硫及减轻钢包顶渣结壳的要求,为高效生产创造了条件。
In order to solve the problem of ladle refining slag crusting during LF deep desulfurization process, the composition and melting point of refining slag were analyzed in this paper. The microstructure and phase of the crust were studied by SEM. The results show that the top slag crusting is caused by the high melting point of slag and the network formation of precipitates in the cooling process. According to the phase diagram, the target composition range of slag upgrading to reduce the melting point of refining slag is determined. Based on the calculation of slag volume, two optimized slag upgrading process schemes are put forward. Through industrial test, the requirements of LF deep desulfurization and reducing of slag crusting at slag surface can be met at the same time, which creates conditions for efficient production.
作者
杨俊峰
韩少伟
江腾飞
韩凯峰
朱良
安永超
孙永林
YANG Junfeng;HAN Shaowei;JIANG Tengfei;HAN Kaifeng;ZHU Liang;AN Yongchao;SUN Yonglin(Steelmaking Department,Beijing Shougang Co.,Ltd.,Tangshan 064404,China)
出处
《炼钢》
CAS
北大核心
2021年第3期39-43,共5页
Steelmaking
关键词
钢包
顶渣结壳
LF深脱硫
渣改质
ladle
slag crusting
deep desulfurization refining
slag upgrading
