%0 Journal Article
%T Modelamento da utiliza£¿£¿o de aglomerado autorredutor em minialto-forno com recircula£¿£¿o de g¨¢s de topo
%A Matos
%A Ulysses Forastieri de
%A Castro
%A Jos¨¦ Adilson de
%J Rem: Revista Escola de Minas
%D 2012
%I Escola de Minas
%R 10.1590/S0370-44672012000100009
%X 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.
%K mini blast furnace
%K self-reduction
%K recycling gas.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0370-44672012000100009&lng=en&nrm=iso&tlng=en