| 摘要 |
PROBLEM TO BE SOLVED: To directly produce an agglomerated ore, which does not become a granulated raw material for producing a sintered ore but becomes a raw material for a blast furnace, by using a mixture, that is obtained by adding an iron source raw material having a low oxidation degree to a fine iron ore, as a starting material, and to eliminate the problems to be caused when a sintering machine is used.SOLUTION: A method for producing the agglomerated ore comprises the steps of: mixing the fine iron ore having 250 μm or smaller particle size, at the least, with one or more of the iron source raw materials each having the low oxidation degree, each of which materials has 0-1.36 of the xo, which exhibits the oxidation degree of iron (FeOxo); granulating an obtained mixture; charging an obtained granulate product into a firing furnace kept under an oxidative atmosphere; and firing the charged granulated product at the low temperature equal to or lower than 850°C. |
