Abstract
The cold permeability of a sinter bed is a complex function of the granules’ effective mean diameter and bed moisture. The binding force provided by moisture before fusion commences crucial in determining the strength of a sinter. However, excess moisture is detrimental to the propagation of the heat front, because it reduces the bed’s permeability. The source of moisture can be either the inherent moisture in the bed or from the incoming gases due to suction in the bottom of the bed. An unsteady-state mathematical model was developed in the current study to describe the moisture transport phenomena during the iron ore sintering. The model was then validated using experimental data from laboratory sintering pot tests. Using the help of the model, the effect of humidity on the moisture characteristics was then investigated. The temperature profiles revealed that the change in the solid temperatures was less than 5% with increasing humid conditions.
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