涟钢6号高炉中修停炉及开炉操作  

Blow off Operation for Medium Maintenance and Re-blow on Operation of LY Steel No.6 BF

作　　者：彭建 刘圣乾 罗俊涛[1] PENG Jian;LIU Shengqian;LUO Juntao(Ironmaking Plant,Hunan Valin Lianyuan Iron and Steel Co.,Ltd.,Loudi 417000,Hunan,China)

机构地区：[1]湖南华菱涟源钢铁有限公司炼铁厂,湖南娄底417000

出　　处：《炼铁》2024年第1期39-44,共6页Ironmaking

摘　　要：对涟钢6号高炉中修停炉及开炉操作进行了总结。采用回收煤气空料线打水方法停炉,将料面降到风口中心线,全程炉顶煤气H2、02含量控制较好,无爆震现象。在开炉操作中,精心计算开炉料,选择合适的全焦比,优化上下部操作制度,并通过采取中心加焦、在各铁口预埋氧枪、逐步捕开风口等措施,开炉过程整体稳顺。送风13h首次铁实现渣铁分离,第5天达产达效,第10天风量达到4650m^(3)/min,富氧量20000m^(3)/h,利用系数>3.0(m^(3)·d),日产量>6800d,燃料比大幅下降,煤气利用率稳步提高。It is summarized the blow off operation of LY Steel No.6 BF for medium maintenance and re-blow on operation.The furnace blow off operation is carried out accompanied by the operation of gas recovery,water sprinkling at the top and stockline lowering to the tuyere centerline,during which,H,and O,content of the top gas is well controlled and no detonation occurred.In the process of re-blow on operation,the composition of the charges are accurately calculated,an appropriate coke rate is selected,the coordination of stock distribution and blasting operation are optimized,and the measures of central coke charging,pre-insertion of oxygen lance to the taphole,and gradual opening of tuyeres are taken.As result of the above actions,the re-blow on operation precedes stably and smoothly.13 hours after blasting,the slag starts to separate from the hot metal,and the furnace achieves the designed output and efficiency on the fth day,and realizes 4650m^(3)/min blast flow rate on the 10th day with oxygen enrichment of 20000 m^(3)/h,productivity and the daily output>3.0/(m^(3)·d)and>6800t/d respectively.Meanwhile,the fuel rate drops significantly,and the gas utilization rate climbs up steadily.

关 键 词：高炉 停炉 降料面 开炉 操作制度 

分 类 号：TF54[冶金工程—钢铁冶金]