Furnace expansion joint with compressible graphite joint filler and manufacturing method

US7744811B2 · kind B2 · utility

Assignee

• SGL CARBON SE · DE

Inventors

• Jörg Mittag · Wiesbaden, DE
• Oswin Öttinger · Meitingen, DE

Key dates

• Filing date: Jul 2, 2007
• Grant date: Jun 29, 2010
• Expiry date: Jul 2, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2237/086
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Expansion joints located in the upper part of the hearth walls of a reduction furnace are filled with a plate-shaped compressible graphite filler having a density of 0.1 to 0.2 g/cm3. A method of manufacturing such a joint filler is also provided.