Title:
高炉用羽口
Document Type and Number:
Japanese Patent JP6917037
Kind Code:
B2
Abstract:
To provide a tuyere having a plurality of cooling water passages with improved resistance to mechanical abrasion and thermal stress inside the blast furnace and reduced manufacturing cost.SOLUTION: A blast furnace tuyere 1 has: an inner tube 3 forming a through hole from the root to the tip; an outer tube 4 which is provided outside the inner tube 3 and forms a water channel space 5 between itself and the inner tube 3; a separation wall 6 for dividing the space 5 into a first layer cooling water passage 7 on the inner side and a second layer cooling water passage 8 on the outer side; a first supply port for supplying cooling water to the first layer cooling water passage 7; a first discharge port for discharging the cooling water circulating through the first layer cooling water passage 7; a second supply port for supplying cooling water to the second layer cooling water passage 8; and a second discharge port for discharging the cooling water circulating through the second layer cooling water passage 8.SELECTED DRAWING: Figure 2
Inventors:
Toshiharu Matsumoto
Masanobu Fujita
Masanobu Fujita
Application Number:
JP2017104396A
Publication Date:
August 11, 2021
Filing Date:
May 26, 2017
Export Citation:
Assignee:
Tobata Manufacturing Co., Ltd.
International Classes:
C21B7/16; F27B1/16
Domestic Patent References:
| JP55124445U | ||||
| JP2000313908A | ||||
| JP2012153973A | ||||
| JP53011107A | ||||
| JP55054343U | ||||
| JP2010215993A |
Foreign References:
| KR1020120082999A |
Attorney, Agent or Firm:
Mizoguchi