Ceramic tiles are thin plates made from clays, silica, fluxes, colorants and other materials, generally used as wall or floor coverings. During its manufacturing process, some heterogeneity problems may appear, due to a poor distribution of the powder in the mold which they are formed in. As a response to this problem, a computer program that allows for simulation, study and understanding of the mold filling of the tile manufacturing process has been developed. The method used to perform the simulation is called the Discrete Elements Method (abbreviated as DEM). Likewise, a novel methodology has been proposed for the calibration of the model, which has been validated using a prototype of a powder feeding system. This equipment has also been used to study the mold filling. Finally, a series of simulations were carried out in order to show the capabilities of the program developed.