Patent ID: 6736876
Filing Date: 2004-05-18
Classification: C21B,Y02P

Abstract:
A fluidized bed reduction reactor for reducing fine iron ore and supplying the reduced iron ore to a melter-gasifier, the fluidized bed reduction reactor comprising:at least two or more fluidized bed furnaces pre-heating, pre-reducing, and finally reducing the charged fine iron ore with a reduction gas supplied from the melter-gasifier in a sequentially manner; a scrubber receiving an exhaust gas from the final reduction furnace via an exhaust tube, cooling the exhaust gas, and scrubbing fine particles contained in the exhaust gas; at least two or more iron ore discharge tubes inter-communicating the fluidized bed furnaces and inter-communicating the final reduction furnace and the melter-gasifier to discharge the charged iron ore to the subsequent furnace or the melter-gasifier; at least two or more reduction gas supply tubes inter-communicating the fluidized bed furnaces and inter-communicating the final reduction furnace and the melter-gasifier to supply the reduction gas generated from the melter-gasifier to each fluidized bed furnace; and a fluidized bed stabilization unit for stabilizing the fluidized bed when the fluidized bed in each fluidized bed furnace is broken due to the unstable supply of the reduction gas from the bottom.