Shaft furnace and method for operating a furnace

US8309016B2 · kind B2 · utility

Assignee

• Thyssenkrupp At.Pro Tec GmbH · DE

Inventors

• Gerd Konig · Hofheim, DE
• Wolfram König · Ibbenbüren, DE
• Alexander Babich · Aachen, DE
• Dieter Senk · Aachen, DE
• Heinrich-Wilhelm Gudenau · Aachen, DE
• Hans-Heinrich Heldt · Viersen, DE

Key dates

• Filing date: Jun 17, 2008
• Grant date: Nov 13, 2012
• Expiry date: Aug 11, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21B2100/64
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention relates to a shaft furnace as well as a method for operating a shaft furnace. For example, the present invention relates to methods for operating a shaft furnace which include charging an upper region of the shaft furnace with raw materials; the raw materials sink in the shaft furnace under the influence of gravity and a part of the raw materials is smelted an/or at least partially reduced under the effect of the atmosphere prevailing within the shaft furnace. The methods further comprise admitting an addition gas via at least one addition opening spaced from a lower admission opening and/or discharging a shaft furnace gas via a shaft furnace gas line to provide discharge of gaseous reaction products from the interior of the shaft furnace.