Title:
フェロコークスの混合率の算出方法および高炉操業方法
Document Type and Number:
Japanese Patent JP6954255
Kind Code:
B2
Abstract:
To provide a calculation method capable of calculating a mixing rate of ferro coke in ore layers piled in a furnace.SOLUTION: Coke and ore mixed with ferro coke are alternately charged in a blast furnace and, of the coke layers and ore layers alternatively formed in the blast furnace, a ratio of the ferro coke mixed in the ore layers is calculated. In this calculation method, a CO gas utilization rate and a Hgas utilization rate are measured for at least one of the furnace gas and the furnace top gas in the blast furnace. The ratio of the ferro coke mixed in the ore layers is calculated using the CO gas utilization rate and the Hgas utilization rate.SELECTED DRAWING: Figure 1
Inventors:
Yuki Iwai
Takeru Sato
Hidekazu Fujimoto
Takeru Sato
Hidekazu Fujimoto
Application Number:
JP2018205659A
Publication Date:
October 27, 2021
Filing Date:
October 31, 2018
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C21B5/00; C21B7/24
Domestic Patent References:
| JP2200710A | ||||
| JP6145728A | ||||
| JP59226109A | ||||
| JP62054006A | ||||
| JP63210207A | ||||
| JP2016050323A | ||||
| JP2017008363A |
Foreign References:
| WO2013183170A1 | ||||
| CN102876823A |
Attorney, Agent or Firm:
Isomura Tetsuro
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori