Patent · US Active

Method for operating an iron- or steelmaking- plant

US11377700B2 · kind B2 · utility

0Cited by

6References

15Claims

0Family size

Assignee

L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

Philippe Blostein · Paris, FR
Mike Grant · Bad Homburg vor der Höhe, DE

Key dates

Filing date	Jul 2, 2018
Grant date	Jul 5, 2022
Priority date	—
Expiry date	Oct 6, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC21B2100/40
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

A method of operating an ironmaking or steelmaking plant with low CO2-emissions is provided. Hydrogen and oxygen are generated by water decomposition and at least part of the generated hydrogen is injected as a reducing gas into one or more ironmaking furnaces with off-gas decarbonation and reinjection into the furnaces of at least a significant part of the decarbonated off-gas and at least part of the generated oxygen is injected as an oxidizing gas in the one or more ironmaking.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.