Hochofenbetriebsverfahren

Details

Veröffentlichungs-Nr.

EP4807019

Anmeldetag

5. November 2024

Veröffentlichung

15. Mai 2025

Rechtsraum

EP

IPC

C21B5/00

Abstract

Provided is an operation method of a blast furnace, in which a first reducing gas containing a hydrogen-based reducing gas as a main component is blown into the blast furnace, a second reducing gas, which is a gas recovered and separated from a top gas and contains at least 50% of a CO gas by volume fraction, is blown into the blast furnace, the second reducing gas is heated to a blowing temperature before the second reducing gas is blown into the blast furnace, and the blowing temperature of the second reducing gas is determined based on a gas volume of the first reducing gas blown into the blast furnace and a gas volume of the second reducing gas blown into the blast furnace.

Anmelder

Firma

Nippon Steel Corporation

Land

🇯🇵 Japan

Fachgebiete