Per: gerson evaristo de paula júnior (USIMINAS - IPATINGA), beatriz fausta gandra (USIMINAS - IPATINGA), Alyson Rayhan Viana Marques (USIMINAS - IPATINGA), Arthur Felipe Lino Oliveira (USIMINAS)
Abstract:
The sinter feed depletion and its physical and chemical deterioration have forced the sinterings to use pellet feeds in their mixtures. However, this material used in high proportions tends to reduce the productivity of sinter machines, due to its granulometry. Thus, the increase in the participation of pellet feed in sintering has been studied, having as an important front the roller press to increase its specific surface. Therefore, in the present work has been evaluated, on a pilot scale, the use of pellets feed natural, specific surface of 560 cm2/ g, and pressed, 2600 cm2/ g of specified surface, in the proportion of 25%, in three different technologies for cold agglomeration (drum, double drum and intensive mixer + drum). In addition, the metallurgical quality of the sinters produced was evaluated. It was found that the best results in productivity and sinter quality were obtained from the mixture with the addition of pellet feed pressed in the double drum SYSTEM.