This work describes the morphological study of the metallization process of self-reducing briquettes containing fines of iron ore and coal. The reduction of briquettes was effected in a temperature range of 1.000 to 1.350 Degrees Celsius varying reduction process duration and the gas atmosphere with nitrogen, carbon monoxide and carbon dioxide. The different phases of the morphology of the metallic iron were measured by the use of stereoscopic devices as well as optical and scanning electron microscopes. The main morphology occurred in a temperature range of 1.200 to 1.350 Degrees Celsius generating iron globules in the center of the briquettes and a continuous metallic layer on the surface. The presence of a dendritic structure and the high carbon content of the iron globules indicate that the highest intensity of carburization occurred in the core regions of the briquettes followed by the melting phase of the iron. The whisker growth of iron was observed in the lower temperature range of 1.000 to 1.100 Degrees Celsius. The bibliographic section makes references to the actual status and new developments in the research of processes based on composite iron ore agglomerates. It is common understanding that the iron morphology plays a key role in the kinetic mechanisms of reducing iron oxide and carbon mixtures.