| 摘要 |
<p>Gravitational type furnace for the direct reduction of mineral iron comprising a median reaction zone (14) in which the reactions to reduce the mineral iron occur, means (12, 13) to feed the mineral iron to said reaction zone (14), distribution means (16, 17, 18) to introduce reducing gas into said reaction zone (14), discharge means (15) to discharge the reduced metal iron, and an intake device (20) for the reducing gas, said intake device (20) being positioned in correspondence with a chamber (21) situated above said reaction zone (14), a toroidal grid (22) being arranged in said chamber (21).</p> |
