BYPRODUCT SLUDGE RECYCLING APPARATUS OF INGOT IRON MANUFACTURING SYSTEM

摘要

PURPOSE: A byproduct sludge recycling apparatus is provided to recycle byproduct sludge by injecting the powdered byproduct sludge into a fluidization reduction furnace after powdering the byproduct sludge in the moisture containing state produced as a byproduct during water treatment of flue gas in an ingot iron manufacturing system. CONSTITUTION: In an ingot iron manufacturing system comprising fluidization reduction furnaces(10,20,30), a melter-gasifier, a water collector, and a process water treater(70) to manufacture ingot iron using semi-soft coking coal and iron ore fines, the byproduct sludge recycling apparatus of the ingot iron manufacturing system comprises a sludge powder production unit(120) which is connected to the process water treater(70) to produce sludge powder by dehydrating, drying and crushing byproduct sludge discharged from the process water treater(70); a sludge powder storage unit which is connected to the sludge powder production unit(120) to store the sludge powder produced in the sludge powder production unit(120); a sludge powder supply unit for supplying the sludge powder discharged from the sludge powder storage unit to a distributor(210a) through a pneumatic carrier tube(200a); and a sludge powder injection pipe(300) which is connected to have a plural flows of sludge powder between the distributor(210a) and the final reduction furnace(30) so that the sludge powder injection pipe(300) reinjects the sludge powder into the final reduction furnace(30).