APPARATUS AND METHOD FOR MANUFACTURING MOLTEN IRONS

摘要

An apparatus and a method for manufacturing molten irons are provided to improve melting efficiency and substantially reduce pollutants released into the atmosphere at the same time by increasing the reduction rate of iron ores in a blast furnace. An apparatus for manufacturing molten irons comprises: a blast furnace(10); a fluidizing and heating furnace(20) into which blast furnace gas generated from the blast furnace is blown to heat fine iron ores; a hot mixer(30) for mixing fine iron ores and carbonaceous materials that have been heated in the fluidizing and heating furnace; a fine iron ore crusher(60) for crushing the fine iron ores that have been heated in the fluidizing and heating furnace to supply crushed fine iron ores into the hot mixer; and a hot former(40) for agglomerating the fine iron ores and carbonaceous materials that have been mixed in the hot mixer to manufacture compacted irons. The apparatus further comprises a carbonaceous material heating furnace(74) for heating the carbonaceous materials and supplying the heated carbonaceous materials into the hot mixer. The hot former includes a pair of rolls(40a,40b).