| 摘要 |
<p>A method and apparatus are disclosed for achieving improved reduction efficiency in the reduction of particulate metal ores, e.g., iron ore, in a vertical shaft, moving bed reactor having a reduction zone in which a hot reducing gas is caused to flow through a portion of the ore bed to reduce the metal ore thereof to metal, e.g., sponge iron, and a cooling zone in which a gaseous coolant is caused to flow through the reduced metal to cool it. Both the reducing gas and cooling gas are recycled to the reactor in loops that are interconnected and a split flow of reducing gas in the reduction zone is used. Make-up reducing gas is supplied to the interconnected loops and depleted reducing gas is vented therefrom. A method and apparatus for controlling gas flow in the several loops of the reduction system are also disclosed.</p> |
