Abstract
A modelling study of the non-catalytic gas solid reaction of a pellet accompaning sintering was conducted. A conservation equation of the particles forming the pellet was derived for movement due to sintering. The model can predict local void fraction distribution and shrinkage rate as well as the reaction progress of the pellet. From the computed results, the overall reaction rate of the pellet is found to be governed by the sintering rate, the initial pellet density and the soild reactant concentration. The reaction rate accompaning sintering decreases, compared with the rate without sintering. The decrease in the reaction rate can be explained by the decrease of effective diffusivity and effective reactive surface due to sintering.
