Modelamento da utiliza？？o de aglomerado autorredutor em minialto-forno com recircula？？o de gás de topo

mini blast furnaces are reactors that traditionally produce pig iron from charcoal using granular ore with some agglomerate substitution. this work proposes metallic burden replacement by self-reducing agglomerates and reutilization of cleaned top gas injected into the shaft of the mini blast furnace where charcoal or small coke from a large blast furnace are used as the reducing agent. this technology was evaluated using a previously validated, blast furnace computational code based on the transport phenomena. several scenarios combining the charging of the furnace with self-reducing agglomerates and reutilization of cleaned top gas were simulated. based on the simulation results, it can be concluded that up to 45% of the metallic burden could be replaced by self-reducing agglomerate combined with the reutilization of the top gas. the best conditions indicated an increase in productivity of around 8% with charcoal as the reducing agent. results showed that decreases of 30% and 40% of the reducing agent could be achieved for operations with charcoal and small coke, respectively.