BURNING POSITION ESTIMATION METHOD OF BLOWING REDUCTION MATERIAL AT BLOW TUYERE OF A BLAST FURNACE AND BLOW TUYERE USED FOR THE METHOD

Title:

BURNING POSITION ESTIMATION METHOD OF BLOWING REDUCTION MATERIAL AT BLOW TUYERE OF A BLAST FURNACE AND BLOW TUYERE USED FOR THE METHOD

Document Type and Number:

Japanese Patent JP2018016849

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a method capable of accurately estimating burning position of a blow reduction material for blowing in blast furnace operation in which the blow reduction material is blown, and a blow tuyere.SOLUTION: In a blast furnace operation in which a blow reduction material is blown into a blast furnace through a lance of which a tip is located in a passage of a tuyere body of a blow tuyere or a blow pipe connected to the tuyere body, light emission intensity of a radiant light of combustion flame at least at 2 locations along a blow direction of the blow reduction material is measured during blowing the blow reduction material by the lance, and a burning position of the blow reduction material is estimated based on the measured light emission intensity.SELECTED DRAWING: Figure 1

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Inventors:

TAKAHASHI KOICHI
MURAO AKINORI
YAMAMOTO NAOKI
ICHIKAWA WAHEI
OYAMA NOBUYUKI

Application Number:

JP2016147999A

Publication Date:

February 01, 2018

Filing Date:

July 28, 2016

Export Citation:

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Assignee:

JFE STEEL CORP
NIPPON STEEL & SUMITOMO METAL CORP
KOBE STEEL LTD
NISSHIN STEEL CO LTD
NIPPON STEEL & SUMIKIN ENG CO

International Classes:

C21B7/24; C21B5/00; G01N21/72

Attorney, Agent or Firm:

Ginza Marronnier Patent Office

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