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US 2026/0201486 A1Published application
Method of producing reduced iron
AssigneeJfe Steel Corporation
InventorsKota MORIYA, Koichi TAKAHASHI, Koki TERUI, Mahoko KOBAYASHI
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Abstract
Provided is a method of producing reduced iron that can achieve both energy savings and a decrease in CO2 emissions. Atop gas circulation and reuse system is provided that includes a blowing process, a reduction process, a distribution process, a generation process, and a heating process. An amount of gas introduced into the distribution process, the generation process, and the heating process is controlled according to a CO2 conversion rate from an electrolysis reaction in the generation process.
Claims4
A method of producing reduced iron, the method comprising:
- a charging process of charging iron oxide into a reduction furnace;
- a blowing process of blowing reducing gas into the reduction furnace;
- a reduction process, in the reduction furnace, of reducing the iron oxide by the reducing gas to obtain reduced iron;
- a distribution process of distributing top gas discharged from the reduction furnace into a first top gas and a second top gas;
- a generation process of generating regenerative carbon monoxide gas by an electrolytic reaction using the first top gas;
- and
- a heating process of heating a mixed gas of the regenerative carbon monoxide gas and the second top gas to become the reducing gas, wherein
- an amount of gas introduced into the distribution process, the generation process, and the heating process is controlled according to a CO2 conversion rate qc from the electrolytic reaction in the generation process.
5 more elements
Dependencies are inferred from the claim text.