一、概况首钢炼铁系统包括有年产400万吨铁矿粉的矿山;有四座高炉,总容积4139m~3;有七台带式烧结机,总有效烧结面积585m~2;四座中型焦炉。“六五”期间炼铁生产得到迅速发展。精矿粉品位一直稳定在68.5%左右;1985年高炉利用系数提高到2.22;入炉焦比降到338kg,综合焦比降到506kg,喷煤率已达 First, an overview Shougang Iron and Steel System includes an annual output of 4 million tons of iron ore mine; has four blast furnaces, a total volume of 4139m ~ 3; has seven sets of belt sintering machine, the total effective sintering area of ​​585m ~ 2; four medium-sized coke oven . During the “Sixth Five-Year” period, ironmaking production has been rapidly developed. Concentrate grade has been stable at about 68.5%; 1985 blast furnace utilization factor increased to 2.22; into the furnace coke ratio dropped to 338kg, the integrated coke ratio dropped to 506kg, coal injection rate has reached