AIR-BLASTING SYSTEM IN BLAST FURNACE AND METHOD FOR RENEWING AIR-BLASTING SYSTEM IN BLAST FURNACE

摘要

PROBLEM TO BE SOLVED: To provide an air-blasting system in a blast furnace and a method for renewing the air-blasting system in the blast furnace with which even in the case of enlarging the inner volume by renewing the lining of the blast furnace, the setting of a new air-blower is not necessary but the air-blasting amount can be minimized.;SOLUTION: The air-blasting system 300 in the blast furnace sets one or both of a small-type air-blower 2b or an accumulator 9 to the one provided with the blast furnace 6, a hot-stoves 4a, 4b, 4c for supplying the hot blast into the blast furnace and a large-type air-blower 2a supplying cold-blast selectively to one or more of the hot-stoves. Further, the renewing method for air-blasting system in the blast furnace, is provided with a process for enlarging the inner volume of the blast furnace 6 and one or both of a process for setting the small-type air blower 2b or a process for setting the accumulator 9 for storing the cold blast fed out from the large-type air blower 2a and the air-blasting shortage amount at the full-up time of the process in the hot stoves 4a, 4b, 4c according to the enlargement of the inner volume is supplemented with the small-type air blower 2b or the accumulator 9.;COPYRIGHT: (C)2007,JPO&INPIT