| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for operating a hot blast stove, in which when the change-over of blasting between the prior hot blast stove and the following hot blast stove is performed, the variation of the blasting quantities and the blasting temperatures are relaxed and also, the thermal efficiency can be improved, in the case of blasting while duplicating the prior hot blast stove having low blasting temperature and the following hotblast stove having high blasting temperature. SOLUTION: In the method for operating the hot blast stoves, in which hot-blasting is continuously injected into a blast furnace while partially duplicating the latter stage parallel blasting period of the prior hot blast stove and the early stage parallel blasting period of the following hot blast stove by setting the plurality of hot blast stoves so as to be three sectional blasting periods of the prior stage parallel blasting-one set blasting-the following stage parallel blasting, when the change-over of the blasting between the prior hot blast stove and the following hot blast stove is performed, the variation of the blasting quantity and the blasting temperature are reduced by continuously changing the blasting quantity distributing ratio with a fixed gradient. COPYRIGHT: (C)2006,JPO&NCIPI
|
