Abstract: A method for recycling processing of dust generated in a converter furnace, includes: crushing and drying a cake formed by adding a binder to a slurry containing iron powder-containing dust that is generated at the time of converter blowing and wet-collected to produce a mixed slurry and subjecting the produced mixed slurry to a dehydration treatment in a filter press; accumulating the cake in an accumulation tank; and charging the cake into a converter furnace 10, the crushed product in the accumulation tank 25 is kept at a temperature of less than 90° C. by forcibly passing air into the accumulation tank 25 and charged into a converter furnace according to the converter operation.

Abstract: In various exemplary embodiments, the present invention provides systems and methods that can convert clean or raw natural gas, clean or dirty coke oven gas, or the like to reducing gas/syngas suitable for direct reduction with minimal processing or cleaning. Hydrocarbons and the like are converted to H2 and CO. S does not affect the conversion to reducing gas/syngas, but is removed or otherwise cleaned up by the iron bed in the direct reduction shaft furnace. Top gas may be continuously recycled or a once-through approach may be employed.

Abstract: The present invention refers to an equipment for feeding and distributing charge and fuel in furnaces of rectangular cross section, comprising movable feeding tubes to distribute along the longitudinal section and the cross section of the furnace, both a charge comprised of self-reducing agglomerates, ore, scrap or any other metallic material, and solid fuels of any kind.

Abstract: A method for producing a sponge metal from metal ore or iron ore which comprises reacting said metal ore or iron ore in a reduction zone with a CO— and H2-containing, reducing feed gas source which has been compressed, and after said reaction, withdrawing the remaining feed gas as an export gas from the reduction zone, wherein the CO— and H2-containing feed gas is introduced into the reduction zone form at least to gas sources, whereby upon a breakdown of one of the feed gas sources, at least a portion of the export gas recovered from the reduction zone is compressed, subjected to CO2 elimination recycled to the reduction zone together with the reducing feed gas.

Abstract: An apparatus for manufacturing molten iron by using a calcination furnace, and a manufacturing method therefor are disclosed. A high temperature reducing gas (1000 to 1100° C.) from a melter gasifier is used as a calcination heat in a calcination furnace so as to cool the high temperature reducing gas to the optimum reduction temperature (800 to 850° C.), and so as to supply the cooled reducing gas to a shaft furnace, whereby the manufacture of the molten iron can be efficiently carried out, and a high thermal efficiency is realized even without a separate gas cooling device. Therefore, a separate cooling device for cooling the hot reducing gas of the melter gasifier is not required. Further, the hot reducing gas is naturally cooled at the calcination furnace, and therefore, the thermal efficiency of the hot reducing gas of the melter gasifier is maximized. Further, a separate water-using cooler and a separate compressor are omitted, and therefore, the molten iron manufacturing facility is simplified.