| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a pellet, which inhibits the generation of a thermal NOx while reducing a manufacturing cost of the pellet in an iron-ore-pellettizing process using a grate-kiln system, and to provide an apparatus for manufacturing the pellet. SOLUTION: The manufacturing apparatus has sets of a plurality of pulverized coal burners 21 for raising the temperature of the flue gas of a kiln by blowing pulverized coal into a preheating chamber 5, and burning the pulverized coal with remaining oxygen in the flue gas of the kiln, arranged on each of opposing longitudinal walls 5a of the preheating chamber 5 with pitches of 0.14 to 0.4 times of the whole length of the preheating chamber 5 in a region between 1/3 and 0.98 of the whole length of the preheating chamber 5 starting from a preheating chamber entry 5b. COPYRIGHT: (C)2005,JPO&NCIPI
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