METHOD FOR MANUFACTURING AGGLOMERATES OF FIRED PELLETS

摘要

A method for manufacturing agglomerates of fired pellets comprising the steps of: the first pelletization step of adding and mixing fluxes to fine iron ores containing 30 to 95 wt.% of those of 0.125mm or less in particle size to form a mixture and to pelletize the mixture into green pellets; the second pelletization step of adding powder cokes containing 80 to 100 wt.% of those of 1 mm or less in paricle size to the green pellets, in amount of 2.5 to 4.0 wt.% to the fine iron ores, to prepare, through pelletization, green pellets coated with the powder cokes; and the sintering step of charging the green pellets coated with the powder cokes into a grate type sintering machine to manufacture the agglomerates of fired pellets. And furthermore, in another method for manufacturing agglomerated of fired pellets, fine iron ores containing 10 to 80 wt.% of those of 0.044mm or less in particle size and powder cokes containing 20 to 70 wt.% of those of 1mm or less in particle size are used.