| 摘要 |
<p>The present invention permits operation at higher reducing temperatures with minimized problems of sinterization and agglomeration of iron ore particles. The process is carried out in a three- zone moving-bed reactor, reduction being effected in the upper zone by CO+H2. A stream of methane is circulated between the lower (cooling) zone, and a cooler, while additional methane (preferably amounting to 1-2% of the cooling stream) is added to that stream, whereby some methane passes upwardly from the cooling zone to the intermediate zone where it reacts endothermically with recycled gas from the reduction zone.</p> |
