Process of producing liquid carbon-containing iron

US4551172A · kind A · utility

Assignees

• Metallgesellschaft AG · DE
• Mannesmann AG · DE

Inventors

• Lothar Formanek · Frankfurt am Main, DE
• Martin Hirsch · Friedrichsdorf, DE
• Harry Serbent · Hanau, DE
• Wolfram Schnabel · Idstein, DE
• Klaus-Dietrich Fritzsche · Oberhausen, DE
• Heribert Koenig · Duisburg, DE
• Gero Rath · Mülheim, DE

Key dates

• Filing date: Aug 8, 1984
• Grant date: Nov 5, 1985
• Expiry date: Aug 8, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S75/958
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Sponge iron is produced by a direct reduction with solid carbonaceous reducing agents. In order to permit a melting of the sponge iron, particularly of that part thereof which is inferior in metallurgical properties, in a process which is as simple and economical as possible, the exhaust gas from the direct reduction process is used to produce electrical energy, which is supplied to the electric reducing furnace, and sponge iron at a rate corresponding to the electrical energy that is produced is charged to the electrical reducing furnace and comprises at least part of the sponge iron which is inferior in metallurgical properties.