Method for producing liquid pig iron

US6562102B1 · kind B1 · utility

Assignee

• Deutsche Voest-Alpine Industrieanlagenbau GmbH · DE

Inventors

• Leopold Werner Kepplinger · Leonding, AT
• Kurt Wieder · Linz, AT
• Herbert Mizelli · Micheldorf, AT
• Josef Stockinger · Munich, DE
• Johann Wurm · Linz, AT
• Parviz Zahedi · Ansfelden, AT

Key dates

• Filing date: May 3, 2001
• Grant date: May 13, 2003
• Expiry date: May 3, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/134
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Process and apparatus for producing liquid pig iron or primary steel products from iron-containing material in lump form in a fusion gasifier (1), in which, with lump coal and oxygen-containing gas being fed in, and with simultaneous formation of a reduction gas, the iron-containing material is fused, lump coal being fed to the fusion gasifier (1) from above and, together with the iron-containing material, forming a fixed bed (6) in the fusion gasifier (1) and thereby giving off its fraction of volatile hydrocarbons into the dome space (11) located above the fixed bed (6), and pulverized-fuel burners (15) being directed obliquely from above towards the surface of the fixed bed (6). The operation of the pulverized-fuel burners (15) is in this case controlled in such a way that the combustion of the carbon fraction of the carbon carriers in fine particle form takes place in a proportion of at least 40% to form CO2.