Title:
METHOD FOR CONTROLLING HOT METAL TEMPERATURE, OPERATION GUIDANCE METHOD, METHOD FOR OPERATING BLAST FURNACE, METHOD FOR PRODUCING HOT METAL, DEVICE FOR CONTROLLING HOT METAL TEMPERATURE, AND OPERATION GUIDANCE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/009617
Kind Code:
A1
Abstract:
A method for controlling a hot metal temperature, comprising performing a first control loop for calculating a target value for a pulverized coal ratio in such a manner that a hot metal temperature predicted by a physical model of which the state in a blast furnace can be calculated can fall within a target range that has been set previously and a second control loop for calculating the amount of operation of a pulverized coal flow rate for compensating the deviation between the target value for the pulverized coal ratio and an actual value of the pulverized coal ratio at the present time.
Inventors:
HASHIMOTO YOSHINARI (JP)
SHIGENO SHUNPEI (JP)
MASUDA RYOSUKE (JP)
UCHIDA KOKI (JP)
SHIGENO SHUNPEI (JP)
MASUDA RYOSUKE (JP)
UCHIDA KOKI (JP)
Application Number:
PCT/JP2021/022519
Publication Date:
January 13, 2022
Filing Date:
June 14, 2021
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21B5/00
Foreign References:
| JP2020029596A | 2020-02-27 | |||
| JP2008146322A | 2008-06-26 | |||
| JPH11335710A | 1999-12-07 |
Other References:
HASHIMOTO, YOSHINARI: "Research on Realizing a Blast Furnace Molten Iron Temperature Control System", DISSERTATION, 1 April 2020 (2020-04-01), Kyoto University, pages 1 - 128, XP055898971, Retrieved from the Internet
OTSUKA YOSHIHISA, KONISHI MASAMI, MAKI TAKESHI: "Control Model of Hot Metal Temperature in the Blast Furnace and its Application to Re-Start Operation Planning", JOURNAL OF THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS, vol. 13, no. 3, 15 March 2000 (2000-03-15), pages 105 - 114, XP093011979
MICHIHARU HATANO ET AL.: "Investigation of Blow-in Operation through the Blast Furnace Dynamic Model", IRON AND STEEL, vol. 68, pages 2369
OTSUKA YOSHIHISA, KONISHI MASAMI, MAKI TAKESHI: "Control Model of Hot Metal Temperature in the Blast Furnace and its Application to Re-Start Operation Planning", JOURNAL OF THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS, vol. 13, no. 3, 15 March 2000 (2000-03-15), pages 105 - 114, XP093011979
MICHIHARU HATANO ET AL.: "Investigation of Blow-in Operation through the Blast Furnace Dynamic Model", IRON AND STEEL, vol. 68, pages 2369
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
Download PDF: