某2500m^(3)高炉焦炭结构变化的影响及对策  

Countermeasures for Changes of Coke Structure in a 2500 m^(3)BF

作　　者：吴示宇 张兴锋[1] 周卫超 赵世丹[1] WU Shiyu;ZHANG Xingfeng;ZHOU Weichao;ZHAO Shidan(Ironmaking Plant,Maanshan Iron and Steel Co.,Ltd.,Maanshan 243000,Anhui,China)

机构地区：[1]马鞍山钢铁股份有限公司炼铁总厂,安徽马鞍山243000

出　　处：《炼铁》2024年第4期22-26,共5页Ironmaking

摘　　要：某2500m高炉因使用外购焦炭及进行干湿焦转换,焦炭结构大幅变化,导致块状带压差升高、中心气流变弱、边沿气流不稳定、操作炉型均匀性及稳定性变差,严重影响了炉况稳定顺行。通过采取调整焦炭负荷、引导中心与稳定边沿相结合、加强出铁管理、稳定炉温及保持合适的铁水成分等措施,维持合适的中心气流和稳定的边沿气流,稳定炉腰、炉腹部位热负荷,维持渣皮的动态平衡,改善操作炉型,炉况恶化的局面得以扭转。停用湿焦后,技术经济指标快速恢复,煤比恢复至164kg/t,焦比降至358kg/t,日产量升至7060t/d。Due to use of the outsourced coke,and replacement of wet quenched coke by the dry quenched coke,the coke structure in a 2500m^(3)BF changes greatly,and the furnace suffers higher pressure difference in the lumpy zone,weak central gas flow,unstable edge gas flow,deteriorated stability and uniformity of the furnace operating profile.These problems seriously affect the stable and smooth running of the furnace.By taking targeted measures such as adjusting the coke load,smoothening the central gas flow path and stabilizing the edge gas flow,strengthening the tapping management,stabilizing the furnace temperature and maintaining the appropriate composition of hot metal,the furnace operates normally,represented by proper central and edge gas flow,stable heat load at the belly and bosh,dynamically balanced skull and improved operating profile.The furnace registers rapidly recovered techno-economic indicators with coal rate reaching 164 kg/t,the coke rate falling to 358 kg/t,and the daily output rising to 7060/d.

关 键 词：高炉 焦炭结构 干湿焦转换 煤气流 操作炉型 

分 类 号：TF53[冶金工程—钢铁冶金]