Title:
銑鉄製造設備およびそれを用いた銑鉄製造方法
Document Type and Number:
Japanese Patent JP6919632
Kind Code:
B2
Abstract:
To provide a pig-iron manufacturing facility using an oxygen blast furnace, capable of reducing the flow rate of a cooling gas to the oxygen blast furnace and efficiently cooling the temperature of tuyere tip of the oxygen blast furnace without requiring incidental facilities, and a method for manufacturing pig-iron using the same.SOLUTION: The pig-iron manufacturing facility using an oxygen blast furnace comprises: an oxygen blast furnace for blowing pure oxygen, a reduction material and a tuyere cooling gas from a tuyere to generate an oxygen blast furnace gas without substantially including nitrogen from a furnace top; and a coke oven using heat generated when combusting the oxygen blast furnace gas by an oxygen containing gas without substantially including nitrogen to form a coke oven combustion exhaust gas to carbonize coal. A part of the coke oven combustion exhaust gas generated in the coke oven without substantially including nitrogen is the tuyere cooling gas of the oxygen blast furnace.SELECTED DRAWING: Figure 1
Inventors:
High Koichi Hashi
Junji Ozawa
Taihei Nouchi
Kawajiri Yuuki
Junji Ozawa
Taihei Nouchi
Kawajiri Yuuki
Application Number:
JP2018145976A
Publication Date:
August 18, 2021
Filing Date:
August 02, 2018
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C21B5/00; C21B7/00; F27D17/00
Domestic Patent References:
| JP2017053029A | ||||
| JP2016222949A | ||||
| JP2007169749A | ||||
| JP2010280808A |
Foreign References:
| WO2015146872A1 |
Attorney, Agent or Firm:
Ginza Marronnier Patent Office