Invention Publication
- Patent 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
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Application No.: US18010985Application Date: 2021-06-14
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Publication No.: US20230251036A1Publication Date: 2023-08-10
- Inventor: Yoshinari HASHIMOTO , Shunpei SHIGENO , Ryosuke MASUDA , Koki UCHIDA
- Applicant: JFE STEEL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: JFE STEEL CORPORATION
- Current Assignee: JFE STEEL CORPORATION
- Current Assignee Address: JP Tokyo
- Priority: JP 20116369 2020.07.06
- International Application: PCT/JP2021/022519 2021.06.14
- Date entered country: 2022-12-16
- Main IPC: F27B1/26
- IPC: F27B1/26 ; F27D19/00 ; C21B7/24

Abstract:
A method for controlling a hot metal temperature, includes: a first control loop for calculating a target value of pulverized coal ratio such that a hot metal temperature, predicted by a physical model that is able to calculate conditions inside a blast furnace, falls within a preset target range; and a second control loop for calculating pulverized coal flow rate manipulation quantity to compensate for a deviation between the pulverized coal ratio target value and a current pulverized coal ratio actual value.
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