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Title:
BLAST FURNACE OPERATION METHOD
Document Type and Number:
Japanese Patent JP2011106799
Kind Code:
A
Abstract:

To provide a blast furnace operation method stably burning a blast furnace gas without using a combustion-assisting gas of high oxygen concentration, in a combustion burner.

In the combustion burner provided with an opening for separately injecting a fuel gas and the combustion-assisting gas, or injecting a premixed gas of the fuel gas with the combustion-assisting gas so that a gas swirl flow is generated in a combustion chamber, on an inner wall surface of a tubular combustion chamber opened at its front end, hydrogen (including a case of adding hydrogen as a hydrogen-containing gas), is added to a blast furnace gas before injected into the combustion chamber or/and the blast furnace gas after injected into the combustion chamber, when using the blast furnace gas as the fuel gas.


Inventors:
Asanuma, Minoru
Nouchi, Yasuhei
Fujibayashi, Teruo
Application Number:
JP2009000299098
Publication Date:
June 02, 2011
Filing Date:
December 29, 2009
Export Citation:
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Assignee:
JFE STEEL CORP
International Classes:
F23C99/00; C21B5/00; C21B5/06; F23C1/00; F23C9/08; F23D17/00; F23L7/00; F27D17/00
Attorney, Agent or Firm:
苫米地 正敏