A nonfired agglomerated ore which is satisfactory in reduction property in the
shaft of a blast furnace and excellent in rapid heating bursting property and a
production method thereof are provided. A carbon containing nonfired agglomerated
ore for blast furnace which is prepared in such a way that iron oxide and a carbonaceous
material are blended with each other to prepare a mixture, a binder is added to
the mixture, and the mixture is kneaded, formed, and cured, wherein the agglomerated
ore contains carbon in the content of 80 to 120% of the theoretical carbon quantity
required to reduce the reducible oxygen in the iron ores to form metallic iron,
and the binder is selected so that the crushing strength may be 7,850 kN/m2
or more at room temperature.
