Title:
METHOD FOR COOLING FURNACE WALL BY B GAS IN BLAST FURNACE
Document Type and Number:
Japanese Patent JPH073312
Kind Code:
A
Abstract:
PURPOSE: To prolong the service life by protecting a furnace wall refractory and an ore receiving metal at furnace top part in a blast furnace from high temp. combustion gas produced in the blast furnace.
CONSTITUTION: Exhaust gas produced in the blast furnace is water-washed and dust-removed, and after passing B gas recycled in a firm through a pressure raising equipment (device) 5, in the condition of raising the pressure to higher pressure than the pressure in the furnace at the blowing position, B gas at the room temp. is blown onto the back surfaces of the furnace wall part 8 and the ore receiving metal part 7 at the furnace top part in the blast furnace, and the parts 7 and 8 are cooled.
Inventors:
KUME SHOICHI
FUKUI MASAYUKI
KAKIMOTO SHINSAKU
KATADA HIROSHI
NISHIDAI FUTOSHI
FUKUI MASAYUKI
KAKIMOTO SHINSAKU
KATADA HIROSHI
NISHIDAI FUTOSHI
Application Number:
JP15041693A
Publication Date:
January 06, 1995
Filing Date:
June 22, 1993
Export Citation:
Assignee:
NAKAYAMA STEEL WORKS LTD
International Classes:
C21B7/10; (IPC1-7): C21B7/10
Domestic Patent References:
| JPS5478306A | 1979-06-22 | |||
| JPH0436413A | 1992-02-06 |
Attorney, Agent or Firm:
Tai Oshima