Title:
OPERATION OF BLAST FURNACE
Document Type and Number:
Japanese Patent JPS5941402
Kind Code:
A
Abstract:
PURPOSE: To freely control the distribution of a gas stream at the lower part of a blast furnace for accelerating reducing reaction and stabilizing the operation of the blast furnace, by mixing coke or coal at a predetermined ratio in an ore layer to be alternately charged with a coke layer in the blast furnace.
CONSTITUTION: In alternately charging ore and coke layers in the blase furnace to refine pig iron by reducing with a high-temp. reducing gas stream, coke or coal is mixed in said ore layer at a ratio ≤20%. By this method, the distribution of the gas stream along a radial direction at the lower part of the furnace is freely controlled, so as to accelerate reducing reaction and to stabilize the operation of the blast furnace.
Inventors:
KAJIKAWA SHIYUUJI
YAMAMOTO RIYOUJI
KISHIMOTO SUMIYUKI
NAKAJIMA RIYUUICHI
SAKAI ATSUSHI
YAMAMOTO RIYOUJI
KISHIMOTO SUMIYUKI
NAKAJIMA RIYUUICHI
SAKAI ATSUSHI
Application Number:
JP15178382A
Publication Date:
March 07, 1984
Filing Date:
September 02, 1982
Export Citation:
Assignee:
NIPPON KOKAN KK
International Classes:
C21B5/00; (IPC1-7): C21B5/00
Domestic Patent References:
| JPS5243169A | 1977-04-04 | |||
| JPS49121707A | 1974-11-21 | |||
| JPS51138501A | 1976-11-30 | |||
| JPS5481110A | 1979-06-28 |
Attorney, Agent or Firm:
Ichiichi Shirakawa
Previous Patent: A mobile station, a base station device, and an integrated circuit
Next Patent: METHOD FOR CHARGING RAW MATERIAL IN BLAST FURNACE
Next Patent: METHOD FOR CHARGING RAW MATERIAL IN BLAST FURNACE