Patent ID: 11940215
Assignee: JFE STEEL CORPORATION
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  B  C  G | IPC B  C  F  G

Claim 1:
2. An operation method for a blast furnace using the blast furnace apparatus as recited in claim 1 in which ore and coke are charged from the rotating chute into the blast furnace, the operation method comprising:
deriving, by the profile measurement device, surface profiles of the burden; and
in a case where variation in the surface profiles derived, or variation in descent speeds of the burden derived from the surface profiles derived or variation in ore layer thickness ratios, is greater than a predetermined value, adjusting either or both of a charge position of at least one of ore or coke charged through the rotating chute and a charge speed of at least one of ore or coke charged through the rotating chute.