| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a fuel charcoal material to be a coal char as a solid fuel for sintering an iron ore which does not generate a volatile component of the solid fuel which does not contribute to combustion in a sintering step of iron ore sintering ore and is capable of starting reaction at low temperature in the sintering step and promoting crack of sintered ore. SOLUTION: A gas composition in an exhaust gas is measured when coal, as a raw material, is decarbonized by using a rotary kiln or a batch type carbonization furnace and when the exhaust gas is a hydrogen gas, exhaust of the hydrogen gas is maintained to adjust decarbonization processing temperature in the range of 650 to 850°C, and thus the char as the fuel coal material for sintering is produced. COPYRIGHT: (C)2010,JPO&INPIT
|
