表２我国炼铁系统工序能耗与国外先进水平对比kgce／t钢铁生产行业是耗能大户，其耗能量约占全国能耗总量的１０％，而其中炼铁系统（高炉、焦炉、烧结，下同）的能耗占整个钢铁厂能耗的７０％以上，是耗能大户中的特大耗能户。炼铁系统消耗的能源主要是煤，而地球上的煤炭资源 Table 2 Comparison of process energy consumption in China’s ironmaking system with foreign advanced level kgce/t Steel production industry is a large energy consumer whose energy consumption accounts for about 10% of the total energy consumption in the country, among which the ironmaking system (blast furnace, coke oven, The energy consumption of sintering, which is the same below, accounts for more than 70% of the energy consumption of the entire iron and steel plant. It is an extremely large energy-consuming household in energy-intensive households. The energy consumed by the ironmaking system is mainly coal, and the coal resources on the earth