Title:
METHOD FOR CHARGING RAW MATERIAL INTO BLAST FURNACE
Document Type and Number:
WIPO Patent Application WO/2022/176518
Kind Code:
A1
Abstract:
The present invention provides a method for charging a raw material into a blast furnace, whereby raw material particle size distributions in a furnace top bunker that are suitable for each of conventional tilt charging and reverse tilt charging can be achieved, thus increasing the amount of gas flow in the vicinity of the center of the blast furnace regardless of the tilting method and making it possible to further increase gas permeability and reduction efficiency. A structure having a predetermined shape is disposed in a raw material storage part of the furnace top bunker, and a position at which the raw material collides on the structure in a storage step is determined according to the tilting method in a charging step.
Inventors:
TERUI KOKI (JP)
IDA MASARU (JP)
SATO TAKESHI (JP)
OGASAWARA YASUSHI (JP)
IDA MASARU (JP)
SATO TAKESHI (JP)
OGASAWARA YASUSHI (JP)
Application Number:
PCT/JP2022/002471
Publication Date:
August 25, 2022
Filing Date:
January 24, 2022
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21B5/00; C21B7/18; F27B1/20; F27D3/10
Foreign References:
| JP2000178624A | 2000-06-27 | |||
| JPS62218507A | 1987-09-25 | |||
| JP2017039969A | 2017-02-23 | |||
| JP2016053201A | 2016-04-14 | |||
| JP4591520B2 | 2010-12-01 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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