PRODUCTION SYSTEM OF MOLTEN IRON OR DIRECT REDUCED IRON USING FLUIDIZED BED REACTORS AND PRODUCTION METHOD OF MOLTEN IRON

摘要

The present invention relates to an apparatus for producing molten pig iron or direct reduced iron using ferrous iron ore, and a method for producing molten pig iron, wherein coal is used as fuel for reducing gas and ferrous iron ore is directly used as a raw material. It is an object of the present invention to provide an apparatus and method for producing molten pig iron or reduced iron simply and efficiently.;The present invention is a device for producing molten pig iron using coal directly as a fuel, the high-temperature reducing gas generated in the molten gasifier is first sent to the fluidized bed limestone kiln to fire the limestone, the reducing gas is iron ore reduction Is supplied to a second fluidized-bed reduction reactor for producing a direct reduced iron, the exhaust gas is supplied to the first fluidized-bed reduction reactor at the top of the second fluidized bed reduction reactor configured to preheat and pre-reduced iron ore and reduced iron Summary of the Invention The apparatus for producing molten pig iron and the manufacturing method of molten pig iron using the same are prepared by supplying limestone and finally reduced reduced calcined iron in the production apparatus of the molten gasifier to produce molten pig iron.