| 摘要 |
<p>An apparatus for the direct reduction of iron ore, e.g. in a shaft furnace, comprises a pair of reducing-gas generating reformers which are alternately heated and functionally interchanged to produce the reducing gas. Downstream of each of the reformers is an air-preheating heat exchanger and between both reformers and the direct-reduction furnace there is provided a buffer heat exchanger. The combination reduced the fluctuations of the reducing-gas temperature at the inlet to the direct-reduction furnace and is able to maintain a reducing-gas temperature close to the desirable maximum for effective reduction.</p> |
