Method for operating a blast furnace
CN122935618APending Publication Date: 2026-10-16NIPPON STEEL CORPORATION
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Patent Information
- Application Number
- CN202580019021.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-03-07
- Filing Date
- 2025-02-27
- Publication Date
- 2026-10-16
AI Technical Summary
Benefits of technology
[0017] According to the present invention, an operating method for a blast furnace that can further improve the efficiency of molten iron production can be provided.
✦ Generated by Eureka AI based on patent content.
Abstract
A method for operating a blast furnace, characterized by blowing a hydrogen-based reducing gas into the blast furnace, separating and removing CO2 gas and H2O gas from a top gas to produce a modified top gas, and blowing the modified top gas into the blast furnace, the method for operating the blast furnace including a step of obtaining a target range of a tapping ratio at the time of operation based on a previously obtained relationship between the amount of the hydrogen-based reducing gas blown and the total pressure loss, and adjusting the operating conditions in a manner in which the range of the tapping ratio at the time of operation converges to the target range of the tapping ratio.
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