APPARATUS FOR PREVENTING DISRUPTION OF FLUIDIZED BED IN INGOT IRON MANUFACTURING PROCESS USING SEMI-SOFT COKING COAL AND PULVERIZED IRON ORE

摘要

PURPOSE: An apparatus is provided to form a fluidized bed which is stable in a fluidized bed reduction furnace by preventing temporary disruption of fluidized bed in the fluidized bed reduction furnace caused during the generation of pressure peak in the ingot iron manufacturing process directly using semi-soft coking coal and pulverized iron ore. CONSTITUTION: The apparatus for preventing disruption of fluidized bed in the ingot iron manufacturing process using semi-soft coking coal and pulverized iron ore comprises a compressor (2) compressing flue gas flown in through the flue gas pipe, wherein the compressor is connected to a flue gas pipe (2a) which is installed at the rear side of a water dust collector (19) so that some of the flue gas can be diverged from the water dust collector; a compressed gas storing vessel (3) for storing the flue gas which is compressed by passing through the compressor (2); a gas pipe (4) one end of which is connected to the compressed gas storing vessel (3), and through which the compressed gas is flown; a control valve (5) opening or closing the gas flow of the gas pipe (4); and a gas blowing pipe (6) to which the other end of the gas pipe (4) is connected, wherein the gas blowing pipe (6) connects a reduction gas inlet pipe (13a) of a final reduction furnace (13) with a melting and gasifying furnace (14).