| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for producing a pellet by which increase in production of pellet or increase in ration of high crystal water ore can surely be achieved. <P>SOLUTION: In a great kiln system production method of iron ore pellet where an iron ore pellet is heated sequentially in a drying chamber 3, a water separation chamber 4 and a preheat chamber 5 while being moved on a traveling grate 2 and then calcined in a rotor kiln 9 equipped with a kiln burner 10, a plurality of burners 31 are arranged in a range equal to 1/3-0.98 times the overall length L of the water separation chamber with the inlet 4b of the water separation chamber as a reference point. Gas fuel is blown from the plurality of burners 31 into the water separation chamber 4 and combusted by residual oxygen in preheat chamber exhaust gas A introduced into the water separation chamber 4 thus raising the temperature of atmosphere in the water separation chamber except the region close to the inlet thereof. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
