METHOD FOR CHARGING RAW MATERIAL AND/OR FUEL INTO SMELTING REDUCTION FURNACE, CHARGING APPARATUS THEREFOR AND SMELTING REDUCTION EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide a charging method of wet raw material into a smelting reduction furnace and an apparatus therefor, by which the consumption of oxygen and the generating quantity of process gas are reduced and the equipping cost is made low with respect to a smelting reduction iron-making method.;SOLUTION: The wet raw material is made into slurry and a shape strengthening material is mixed and exposed to the atmosphere in the furnace during smelting in the smelting reduction furnace and dried and charged into the bath part 71. The wet raw material is stayed into the above atmosphere for the time te=5WOR/SOR (min) or more (wherein, WOR: stuck moisture + Ig. loss (inside content) of an ore and SOR: specific surface area of the ore). A staying position 64 is arranged on the furnace wall 63 and this raw material can be stayed therein. To the atmosphere at ≥1,000°C in the flowing passage introducing high temp. gas in the outside of the system in the smelting process, the material beforehand mixing the ore containing the moisture and carbon-aceous material, etc., is exposed to remove the moisture. The staying time of the charged material is adjusted according to the information related to the heat load of the furnace wall in the smelting reduction furnace, and the charging quantity is adjusted according to the charging position in the furnace.;COPYRIGHT: (C)2000,JPO