| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing pellet with which in a grate-kiln type pellet producing apparatus, the development of bursting in a preheating chamber of a grate-furnace can surely be prevented. Ž<P>SOLUTION: In an upper space of the preheating chamber 5, the actual operational conditions (for example, at least one among the firing amount of a water-separating chamber burner 31, the firing amount of a preheating chamber burner 21, the grate-moving speed and the pellet layer thickness) are adjusted, so that the temperature difference ΔT=T<SB>2</SB>-T<SB>1</SB>between the atmospheric temperature T<SB>2</SB>measured with a preheating chamber inlet thermometer 43 separately arranged at the inlet part of the preheating chamber 5 excepting from a preheating chamber thermometer 44 for measuring the atmospheric temperature in the preheating chamber and the gas temperature T<SB>1</SB>measured with a fire-grate thermometer 42 at the outlet of the water-separating chamber arranged just below the grate 2 at the outlet part of the water-separating chamber 4 becomes smaller than the permissible temperature difference ΔT<SB>max</SB>preset based on the past operational result. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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