Patent ID: 7875097

Claim:
A method of manufacturing sintered iron ore based on sintering wherein the method comprises: (1) granulating a raw material for sintering by: (a) blending a raw material for sintering of 100% in total, so as to adjust iron-containing dust and/or sludge to 60% or more, and coarse grains having a grain size of 2 mm or larger to 20% or more on the weight basis, adding thereto one-third or less of the total amount of addition of coke breeze as a fuel, and kneading the granulating the blend using a vibration kneading granulator to thereby produce granulated grains; and (b) adding the residual portion of the total amount of addition of coke breeze to said granulated grains, and subjecting the blend to exterior coating granulation using a rolling granulator to produce a granulated raw material for sintering; and (2) screening the granulated raw material for, sintering to produce a fraction having a grain size of 1 mm or larger; and (3) sintering the fraction having a grain size of 1 mm or larger to produce sintered iron ore.