采用大量的球团工艺试验数据和研究成果,探讨了干球预热的热工制度对入窑球团质量的影响,强调预热温度和预热气体流量是关键。提出应该重视入窑球团的三个质量指标,即预热球团的抗压强度、转鼓(耐磨)指数以及入窑球团的(平均)温度。 Using a large number of pelletizing process test data and research results, the effect of the thermal system of dry-bulb preheating on the quality of pellets into the kiln was discussed. It is the key to emphasize the preheating temperature and preheating gas flow. It is suggested that three quality indexes should be taken into account for pellet injection, that is, compressive strength of preheated pellets, index of drum (wear resistance) and (average) temperature of pellets into the pellets.