الخلاصة

The properties of Portland cement depend on several parameters, and the cooling method is one of these parameters. When the effectiveness of cooling method increases, the properties of Portland cement are enhanced. In the present work, a new cooling method is suggested and numerical analysis is made by CFD modeling using (FLUENT 6.3.26). Using the same dimensions of cooling room in grate cooler, constant mass flow rate of air and clinker, different porosity of clinker, and different height ratios ( height of air / height of clinker), the numerical results were calculated. The results show that the height ratio is an important factor affecting the new cooling method and can be used in order to decrease the length of cooling room or the time of cooling process according to the porosity of clinker. The maximum temperature of clinker with the lowest possible porosity is much lower than the maximum temperature of clinker with maximum porosity at a constant height ratio (H.R.). Also, when the height ratio (H.R.) increases, the temperature of clinker decreases at any point, also the rate of change between clinker and air temperature decreases with increasing the height ratio (H.R.).