1 绪言炼钢时,电炉内熔化废钢法与在高炉内还原铁矿石后再在转炉内吹氧熔炼法相比,电炉内熔化废钢所需能量为转炉内的 1/3左右。而且能提高转炉内装入废钢比率,从而减少钢铁冶炼过程中所需能量,因此,可以说,促进废钢的再循环在节能即减少CO2排放量方面是有效的,从地球环保角度来说也很重要。 INTRODUCTION In steel making, the energy required to melt scrap in an electric furnace is about one-third of that in a converter when the molten scrap method in the electric furnace is compared with the oxygen blowing in a converter after the reduction of iron ore in the blast furnace. But also increases the scrap ratio incorporated in the converter to reduce the amount of energy required in the iron and steel smelting process. Therefore, it can be said that promoting scrap recycling is effective in saving energy, that is, in reducing CO2 emissions and is also important from an environmental perspective .