对武钢7座高炉的直接还原度、碳熔损量、焦炭起始反应温度进行了研究,结果表明:武钢高炉直接还原度偏高且波动范围宽,为了降低焦比,需要发展间接还原;高炉碳熔损量在20%~25%之间,为了能够更加准确地指导高炉生产,需要进行恒定反应性的焦炭热性能实验;随着直接还原度降低,高炉煤气利用率呈线性升高,焦比呈线性降低;焦炭的起始反应温度受配煤比、工艺条件、炉型等因素的影响,其中工艺条件的影响最大。 The direct reduction, carbon loss and coke initial reaction temperature of seven blast furnaces in WISCO were studied. The results showed that the direct reduction of blast furnace in WISCO was high and the fluctuation range was wide. In order to reduce the coke ratio, indirect reduction was needed. In order to be able to guide the blast furnace production more accurately, it is necessary to experiment on the thermal properties of coke with constant reactivity. With the reduction of direct reduction, the blast furnace gas utilization rate increases linearly, and the coke burn rate is between 20% ~ 25% Than the linear decrease; coke initial reaction temperature by the ratio of coal, process conditions, furnace type and other factors, of which the impact of process conditions.