Process and device for melting iron metallurgical materials in a coke-fired cupola

US5632953A · kind A · utility

Assignees

• Hans U. Feustel · DE
• Joachim Mallon · DE
• Michael Schaaf · DE

Inventors

• Hans U. Feustel · Leipzig, DE
• Joachim Mallon · Leipzig, DE
• Michael Schaaf · Solingen, DE
• Edmund Wilms · Ahrensbök, DE
• Gerhard Neumann · Waldkraiburg, DE
• Karl-Heinz Köhler · Aachen, DE
• Ludwig Ruschitzka · Halsbrücke, DE

Key dates

• Filing date: Sep 11, 1995
• Grant date: May 27, 1997
• Expiry date: Sep 11, 2015

Classification

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

Abstract

A coke-fired cupola, including: a furnace shaft having a well at one end, a charging device connected to the shaft, a lower-mouth exhaust connected to the shaft below the charging device, and a furnace gas exhaust ring arranged at the shaft below the charging device and the lower-mouth exhaust. Additionally, at least one nozzle is connected to the shaft above the well. The at least one nozzle has a centrally run oxygen lance. A gas recirculating circuit is provided for connecting the furnace gas exhaust ring to the at least one nozzle. The gas recirculating circuit includes an exhaust device connected to the furnace gas exhaust ring, a recirculating gas ring connected to the at least one nozzle and a recirculating gas duct connected between the exhaust device and the recirculating gas ring.