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 0:
1. A blast furnace apparatus comprising:
a rotating chute configured to charge a raw material into a blast furnace from a blast furnace top;
a profile measurement device configured to measure surface profiles of a burden charged into the blast furnace through the rotating chute; and
a tilt angle controller configured to control a tilt angle of the rotating chute, wherein
the profile measurement device comprises a radio wave distance meter, which is installed on the blast furnace top and configured to measure a distance to the surface of the burden in the blast furnace, and derives the surface profiles of the burden on a basis of distance data for the entire blast furnace related to distances to the surface of the burden obtained by scanning a detection wave of the radio wave distance meter in the blast furnace in a circumferential direction;
the profile measurement device comprises at least one of
an arithmetic unit configured to command, on a basis of the surface profiles obtained, the tilt angle controller to change the tilt angle of the rotating chute during rotation,
an arithmetic unit configured to command, on a basis of the surface profiles obtained, a speed controller to change a rotational speed of the rotating chute during rotation, or
an arithmetic unit configured to command, on a basis of the surface profiles obtained, a speed controller to change a feed speed of the burden fed to the rotating chute during rotation; and

the profile measurement device further comprises an arithmetic unit configured to calculate a descent speed of the burden over an entire circumference of the blast furnace on a basis of the surface profiles of the burden.