全废钢电炉炉门喷吹技术与工艺应用  

Application of the Door⁃blowing Technology and Process in Full Scrap EAF

作　　者：姚同路[1] 贺庆[1] 杨勇[1] 吴伟[1] 孟华栋[1] 胡砚斌[1] YAO Tonglu;HE Qing;YANG Yong;WU Wei;MENG Huadong;HU Yanbin(Metallurgical Department,Central Iron and Steel Research Institute,Beijing 100081,China)

机构地区：[1]钢铁研究总院有限公司冶金工艺研究所,北京100081

出　　处：《工业加热》2023年第10期9-12,16,共5页Industrial Heating

摘　　要：从电炉喷吹技术发展、电炉吹氧工艺、喷粉造泡沫渣机理等角度,对全废钢电炉炉门喷吹技术及工艺进行了研究,并结合水平连续加料电炉冶炼特点,对电炉炉门喷吹技术进行了改进优化。生产实践表明,优化后的炉门喷吹系统可大幅提高废钢熔化速度,降低耐材冲刷,提高碳粉利用率。100t Consteel电炉电耗由400 kW·h/t降至340 kW·h/t,氧耗由30 m^(3)/t(标准)降至26 m^(3)/t(标准),碳粉耗量由28 kg/t降至22 kg/t,炉龄由平均300炉增加至400炉,冶炼周期由48 min缩短至42 min,高效低成本效果显著。电炉炉门喷吹技术下一步的发展方向一定是升级装备技术,提升智能化水平,与现代电炉的发展水平相匹配。In order to study the door⁃blowing technology and process of full scrap EAF,multiple perspectives such as development of EAF blo⁃wing technology,oxygen blowing process,mechanism of foaming slag were analyzed deeply,meanwhile,the door⁃blowing technology was im⁃proved and optimized according to smelting characteristics of horizontal continuous charging EAF.Production practice showed that the optimized door⁃blowing system could greatly increase the scrap melting rate,reduce the erosion of refractory and improve the utilization rate of carbon powder.For 100t Consteel EAF,optimized technology could reduce power consumption from 400 kW·h/t to 340 kW·h/t,reduce the oxygen consumption from 30 Nm^(3)/t to 26 Nm^(3)/t,reduce the carbon powder consumption from 28 kg/t to 22 kg/t,shorten the production cycle from 48 to 42 minutes,achieved high efficiency and low cost metallurgical effect.The next development direction of EAF door blowing technology should be to upgrade equipment technology,improve the intelligent level,and match the development level of modern EAF.

关 键 词：炉门喷吹技术 全废钢电炉 吹氧工艺 泡沫渣 废钢熔化 

分 类 号：TF741.5[冶金工程—钢铁冶金]