A FLUIDIZED BED REACTOR FOR PREVENTING THE FINE IRON ORE FROM STICKING THEREIN AND METHOD THEREFOR

摘要

A smelting reduction apparatus which separates exhaust gas, which is exhaust ed from a melter-gasifier (40) or a fluidized bed reactor (10, 20, 30), into dusts and reducing gas to supply them to each fluidized bed reactor (10, 20, 30) respectively is disclosed, in which the smelting reduction apparatus includes a three-stage type fluidized bed reactor, a melter-gasifier (40) fo r manufacturing molten pig iron and a dust separating device (45, 50, 60), whi ch performs separation of exhausted gas from the melter-gasifier (40) into dust s and reducing gas, so as to supply the separated reducing gas to a lower part of the final fluidized bed reactor (30), dusts having a larger particle size back to the melter-gasifier (40) again and fine dusts having a smaller particle size to an upper part of the gas distributor of the final fluidized bed reactor (30).