MUMBAI, India, July 5 -- Intellectual Property India has published a patent application (202517050440 A) filed by Primetals Technologies Austria Gmbh, Linz, Austria, on May 26, for 'use of tail gas made of the discharged gas of a reduction process of iron oxide-containing material.'
Inventor(s) include Millner, Robert; Rein, Norbert; Wurm, Johann; and Zellinger, Karl-Heinz.
The application for the patent was published on July 4, under issue no. 27/2025.
According to the abstract released by the Intellectual Property India: "The invention relates to a method for producing molten iron (20). The reduction of iron oxide-containing material (50) in order to form a metallized product (30) is carried out using a reduction gas consisting at least largely of hydrogen H2, and a top gas (60) is accumulated during the reduction process, wherein - optionally after a treatment of the top gas (60) - a first sub-quantity (100) of the top gas (60) is combined with reducing reduction gas components (110) in order to provide reduction gas, and a second sub-quantity (120) of the top gas (60), as a discharged gas, is subjected to a gas separation process into a hydrogen-enriched gas flow (140) and a hydrogen-depleted tail gas flow (150). The metallized product (30) of the reduction process is combined with carbon carriers so as to be melted in a melting device (10) in order to form a molten iron (20), and a smelting exhaust gas (180) is accumulated. In the process, at least a sub-quantity of the tail gas flow (150) is combined with at least a sub-quantity of the smelting exhaust gas (180), and a tail gas mixture (190) is produced. At least a sub-quantity of the tail gas mixture (190) is supplied to a thermal use (200)."
The patent application was internationally filed on Dec. 13, 2023, under International application No.PCT/EP2023/085656.
Disclaimer: Curated by HT Syndication.
