Process for sintering iron oxide-containing materials on a sintering machine

US5476533A · kind A · utility

Assignee

• Metallgesellschaft AG · DE

Inventors

• Fred Stieler · Heusenstamm, DE
• Norbert Magedanz · Hasselroth, DE
• Walter Gerlach · Naperville, US
• Jurgen Otto · Hattingen, DE
• Martin Hirsch · Friedrichsdorf, DE
• Fred Cappel
• Detlev Schlebusch · Mellrichstadt, DE
• Hermann Schmidt · Linz, DE
• Heiko Weisel · Staufenberg, DE
• Hans-Joachim Werz · Frankfurt am Main, DE

Key dates

• Filing date: Oct 2, 1992
• Grant date: Dec 19, 1995
• Expiry date: Oct 2, 2012

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/20
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A sinterable mixture comprising iron-containing materials and solid fuel is sintered on a sintering machine; to decrease the rate at which exhaust gas is to be removed and to produce a desirable sinter, a part of the exhaust gas is enriched to an oxygen content of up to 24% by the addition of higher-oxygen gases and is then recirculated as a recycle gas, and exhaust gas is removed as a tail gas from the process only at a rate which corresponds to the rate of the gas which is formed during the sintering process plus the rate of the gas added for enriching plus the rate of inleaked air which has infiltrated from the outside minus the rate of oxygen consumption.