Direct reduction furnace operation method and reduced iron production method
JP7736229B1Active Publication Date: 2025-09-09JFE STEEL CORP
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Patent Information
- Application Number
- JP2025536415
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2024-01-24
- Filing Date
- 2025-01-07
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2045-01-07
Abstract
A method for operating a direct reduction furnace is provided that reduces CO2 emissions and enables stable operation by avoiding problems such as reduced productivity and shutdowns. A high-temperature gas is injected into the direct reduction furnace separately from the reducing gas, and the injection position of the high-temperature gas in the vertical direction is set higher than the injection position of the reducing gas in the vertical direction.
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Citation Information
Patent Citations
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WO2022264666A1
Method for operating direct reducing furnace using preheated raw material
JP2012102371A