120t转炉高供氧强度冶炼工艺开发  

Development of Smelting Process with High Oxygen Supply Intensity for 120 t Converter

作　　者：张天 蒋鲤平 于飞 刘宇龙 Zhang Tian;Jiang Liping;Yu Fei;Liu Yulong(No.3 Steelmaking Plant,Zenith Steel Group Co Ltd,Changzhou 213100)

机构地区：[1]中天钢铁集团有限公司第三炼钢厂,常州213100

出　　处：《特殊钢》2021年第5期52-55,共4页Special Steel

摘　　要：通过优化氧枪的喷头参数,120 t转炉供氧强度由3.6m^(3)/(min·t)提高到4.5 m^(3)/(min·t),同时为了保证终点钢水成分满足生产要求,对转炉冶炼枪位和加料制度进行了优化。生产实践表明,采用新的氧枪喷头组织生产,转炉终点成分与原工艺相近,转炉吹氧时间可由15.1 min缩短到12.8 min,冶炼周期相应缩短了2.4 min,炉渣全铁含量可由18.5%降低到17.5%,预计年产量可提高12万t。By optimizing the nozzle parameters of oxygen lance,the oxygen supply intensity of 120 t converter is increased from 3.6 m^(3)/(min·t)to 4.5 m^(3)/(min·t),and the oxygen lance blowing system and charging system of converter are optimized to ensure the end liquid composition satisfing the requirement of production.The production practice shows that the end-point composition of converter by using the new oxygen lance nozzle is similar to the original process,the oxygen blowing time of converter can be shortened from 15.1 min to 12.8 min,the tap-to-tap time can be shortened by 2.4 min,the total iron content in slag can be reduced from 18.5%to 17.5%,and the annual output can be increased by 120000 tons.

关 键 词：120T转炉 喷头 供氧强度 脱磷 

分 类 号：TF713[冶金工程—钢铁冶金]