| 摘要 |
<p>603434 A process and plant for the production of hot metal is disclosed. Granular raw materials containing iron oxide are partially reduced to a reduced mixture with a carbonaceous reducing agent in a fluidized bed reactor (13) at a temperature of at least 850°C. The reduced mixture is feed via a discharge system, possibly after separation of the magnetic and non-magnetic components by hot magnetic separation (30), to a smelting reduction unit (31). To optimize the energy consumption, the reduced mixture is cooled to 600°C to 800°C in a heat exchanger apparatus (21) before being supplied to the smelting unit, wherein a preheated process gas (11) is used as cooling medium then fed (24) to the fluidized bed reactor.</p> |
