在氮气保护气氛下利用微波加热对转炉钢渣的碳热还原行为进行了研究。结果表明:铁收得率随钢渣粒度、还原温度、碳当量、保温时间的增加而升高。在2倍碳当量、粒度0.15 mm、还原温度为1 400℃下保温45 min,铁收得率最高可达93.6%,SEM/EDS分析显示此条件下所得渣块无Fe存在。该试验为转炉钢渣中铁的回收提供了依据。 The carbothermal reduction behavior of converter slag was studied by using microwave heating in nitrogen atmosphere. The results show that the iron recovery rate increases with the increase of slag particle size, reduction temperature, carbon equivalent and holding time. Under the conditions of 2 times carbon equivalent, 0.15 mm particle size and 45 ℃ reduction time at 1 400 ℃, the yield of iron can reach 93.6%. The SEM / EDS analysis showed that there was no Fe in this condition. The test provided the basis for the recovery of iron in converter steel slag.