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宝钢4号高炉在面临炉身耐材的维护和炉料结构变化大的条件下,为了降低燃料比,确定了生产操业调整的目标,即:确保高炉稳定顺行、操作炉型稳定、良好的透气性、较高的煤气利用水平。通过采取提高煤气利用率、降低渣比、降低铁水含硅量、保持合适的T_f值促进煤粉燃烧等措施,4号高炉保持年均煤比在180 kg/t以上,燃料比控制在480 kg/t左右,低于4号高炉2005年投产以来历年燃料比指标。
In order to reduce the fuel ratio, Baosteel No.4 blast furnace, in the face of the maintenance of the refractory body of the shaft and the change of the charge structure, has set the goal of adjustment of the production operation, that is, to ensure that the blast furnace is stable and stable and the operating furnace type is stable and good Breathability, high level of gas utilization. By adopting such measures as increasing gas utilization rate, reducing slag ratio, reducing silicon content in molten iron, maintaining proper T_f value and promoting pulverized coal combustion, No. 4 blast furnace maintains an annual average coal ratio above 180 kg / t and a fuel ratio of 480 kg / t or so, lower than the No. 4 blast furnace since 2005 put into operation the fuel ratio over the years.