Title:
粒状固体還元材の吹込み方法
Document Type and Number:
Japanese Patent JP6977739
Kind Code:
B2
Abstract:
To provide a blast furnace tuyere capable of suppressing tuyere wear and tuyere clogging.SOLUTION: The blast furnace tuyere that injects a granular solid reducing material into a blast furnace includes a main flow hole for injecting a gas containing oxygen into the blast furnace, and a sub-flow hole provided above the main flow hole for injecting the granular solid reducing material, in which the sub-flow hole is provided at a position where the granular solid reducing material can be injected into a raceway formed by the gas containing oxygen blown in from the main flow hole.SELECTED DRAWING: Figure 1
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| JPS62161905 | DEVICE FOR REMOVING DEPOSIT OF BLAST TUYERE OF BLAST FURNACE |
Inventors:
High Koichi Hashi
Junji Ozawa
Taihei Nouchi
Kawajiri Yuuki
Yuya Morita
Junji Ozawa
Taihei Nouchi
Kawajiri Yuuki
Yuya Morita
Application Number:
JP2019009526A
Publication Date:
December 08, 2021
Filing Date:
January 23, 2019
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C21B7/16; C21B5/00
Domestic Patent References:
| JP2012521492A | ||||
| JP49012808B1 | ||||
| JP61078849U |
Foreign References:
| WO2014162965A1 |
Attorney, Agent or Firm:
Isomura Tetsuro
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori