转炉煤气烧结点火工艺改造及生产实践  

Reconstruction and Production Practice of Sintering Ignition Process with Converter Gas

作　　者：孙东 高建安 唐斌 SUN Dong;GAO Jianan;TANG Bin(The Ironmaking Plant of Shiheng Special Steel Group Co.,Ltd.,Feicheng 271612,China)

机构地区：[1]石横特钢集团有限公司炼铁厂,山东肥城271612

出　　处：《山东冶金》2018年第4期7-9,共3页Shandong Metallurgy

摘　　要：石横特钢通过改造点火器及转炉煤气管网设备,确定最佳空煤比、点火温度、点火时间、点火负压等控制参数,实现了转炉煤气代替高炉煤气用于烧结点火。采取稳定转炉煤气热值和压力、低负压点火、厚料层烧结等工艺技术措施,降低了煤气消耗。改造后烧结机利用系数提高0.05 t/(m^2·h),成矿率提高2.6%,固体燃料消耗降低1.5 kg/t,电耗降低1.0 k Wh/t,转炉煤气单耗约20 m^3/t。By modifying the igniter and converter gas pipe network equipment,the optimum control parameters were determined,such as the air-gas ratio,the ignition temperature,the ignition time,the ignition negative pressure,for the sintering ignition,the blast furnace gas replaced by converter gas is realized in Shiheng Special Steel.The gas consumption is reduced by using the technical measures such as stabilizing the calorific value and pressure of converter gas,igniting with low negative pressure and sintering thick material layer.After reconstruction,the utilization coefficient of the sintering machine is increased by 0.05 t(/m^2·h),the ore-forming rate is increased by 2.6%,the consumption of solid fuel is reduced by 1.5 kg/t,the electricity consumption is reduced by 1.0 kWh/t,and the unit consumption of converter gas is about 20 m^3/t.

关 键 词：烧结点火 转炉煤气 点火器 低负压 空煤比 

分 类 号：TF046.4[冶金工程—冶金物理化学]