| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a furnace top bunker capable of attaining a lower RAR by raising a gas utilization rate in a peripheral portion of the furnace without bringing bad furnace conditions caused by permeability aggravation in a RAR blast furnace operation, and a charging method of raw material to a blast furnace using the same. <P>SOLUTION: The furnace top bunker 12 is arranged in a furnace top of a blast furnace, in which charging of blast furnace charged raw materials of ore raw materials or the like such as sintered ores, pellets, massive ores or the like, into the furnace is carried out by a swinging chute 16, and discharges the blast furnace charged raw materials into the swinging chute after temporarily storing them, wherein an inclinable movable segregation control plate 21 is arranged inside to contact with the blast furnace charged raw materials and to change a dropping down direction thereof, and wherein a magnet 22 is arranged in a plane of an opposite side to a plane of the segregation control plate, where the blast furnace charged raw material contacts, to reduce a charge of the blast furnace charged raw materials per a unit area of the raw material piling plane. <P>COPYRIGHT: (C)2012,JPO&INPIT |
