ABSTRACT

In the present study, the influence of industrial sinter machine speed on the temperature distribution of the bed is evaluated using a one-dimensional transient mathematical model. The model is developed considering the law of conservation of mass, momentum, and energy of solid and gas phases. The prediction of bed temperature from the model is compared with the measured lab scale pot test and the exit gas temperature of an industrial sinter machine wind boxes shows a reliable agreement. The effect of machine speed on the temperature of the bed is quantified using Maximum Temperature, and the coke combustion characteristics are expressed in terms of Duration Time of Coke Combustion and Combustion Zone Thickness. Eventually, the Melting Zone Thickness and melt fraction of the bed is evaluated. This model result demonstrates that the increasing industrial sinter machine speed significantly affects the temperature distribution of the top layer of the sinter bed.

摘要

在本研究中，使用一维瞬态数学模型评估工业烧结机速度对床层温度分布的影响。该模型是在考虑固相和气相的质量、动量和能量守恒定律的情况下开发的。该模型对床温的预测与实测的实验室规模盆栽试验进行了比较，工业烧结机风箱的出口气体温度显示出可靠的一致性。机器速度对床层温度的影响使用最高温度进行量化，焦炭燃烧特性用焦炭燃烧的持续时间和燃烧区厚度表示。最后，评估床的熔化区厚度和熔体分数。