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1前言2008年对小高炉全部停炉拆除,现有二座493m3高炉、一座450m3高炉。2009年以来,一直以二座493m3高炉生产,450m3高炉在2008年8月30日停炉大修、目前没生产。2008年信钢产铁110.82万吨,指标方面平均焦比470kg/t,平均煤比93kg/t,450m3高炉年均利用系数3.13t/(m3.d)。2009年一季度二座450m3高炉平均系数3.30t/(m3.d),最好的月份3.36t/(m3.d),焦比436kg/t、煤比108kg/t。炉料结构为71%机烧+25%球团+4%进口生矿。从3月30日起,
1 Foreword In 2008, all the small blast furnaces were demolished. There are two 493m3 blast furnaces and one 450m3 blast furnace. Since 2009, has been to two 493m3 blast furnace production, 450m3 blast furnace on August 30, 2008 shutdown overhaul, no production. In 2008, its production capacity of iron ore was 1,108,200 tons. The average coke ratio in terms of indicators was 470kg / t, the average coal ratio was 93kg / t, and the annual average utilization factor for the 450m3 blast furnace was 3.13t / (m3.d). In the first quarter of 2009, the average coefficient of two 450m3 blast furnaces was 3.30t / (m3.d), the best month was 3.36t / (m3.d), the coke ratio was 436kg / t and the coal ratio was 108kg / t. Burning structure of 71% machine burn + 25% pellets + 4% of imported raw ore. From March 30 onwards,