Invention Patent: B "INSTALLATION AND PROCESS FOR THE PRODUCTION OF CAST IRON AND / OR SPONGE IRON" D. An installation for the production of pig iron and / or sponge iron, comprising at least one fluid bed reactor (1, 2) for receiving fine ore, a reduction gas supply pipe (7) leading to this reactor fluidized bed (1, 2), a flue gas discharge pipe (8) from the fluidized bed reactor (1) and a discharge device (17), preferably a briquetting device (6), provided for the reduction product formed in the fluidized bed reactor (1, 2), the flue gas discharge pipe (8) from the fluidized bed reactor (1) flows into a cleaning device, such as a washer (9) and then then in a heating device (12, 13) and finally to the reducing gas supply pipe (7) of the fluidized bed reactor (1, 2). To produce a product that has a high quality standard with minimal energy consumption, the heating device is constituted in such a way that it comprises two stages and at least one heat exchanger (12) is provided as the heating device for the reducing gas and, connected in series with it, a partial combustion device (13) for the reducing gas with an oxygen supply device (16).
展开▼
