Fluidized bed arrangement for the production of molten pig iron and steel pre-products

US4805880A · kind A · utility

Assignees

• Voest-Alpine Akt. · AT
• Korf Engineering GmbH · DE

Inventors

• Rolf Hauk · Düsseldorf, DE
• Gero Papst · Kaarst, DE
• Klaus Langner · Überlingen, DE
• Michael Nagl · Reichenau, AT
• Werner Kepplinger · Linz, AT
• Leopold Seirlehner · Linz, AT

Key dates

• Filing date: Sep 21, 1987
• Grant date: Feb 21, 1989
• Expiry date: Sep 21, 2007

Classification

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

Abstract

A process and an arrangement for the production of molten pig iron or steel pre-products from particulate ferrous material as well as for the production of reducing gas in a meltdown gasifier. A fluidized bed of coke particles is formed by the addition of coal and the injection of oxygen-containing gas. In order to ensure a satisfactory mode of operation of the meltdown gasifier even if coal of inferior quality with a high moisture content and a high portion of volatile matter is used, additional heat is supplied to the meltdown gasifier above the feed lines for the fluidized-bed-forming oxygen-containing gas by burning and/or degassing coal particles separated from the reducing gas.