Refractory carbon-bonded magnesia brick and process for producing it

US8193110B2 · kind B2 · utility

Assignee

• Refratechnik Holding GmbH · DE

Inventor

• Helge Jansen · Friedland, DE

Key dates

• Filing date: Feb 26, 2008
• Grant date: Jun 5, 2012
• Expiry date: Jun 12, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/96
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a refractory, ceramically fired, carbon-bonded magnesia brick whose matrix is more than 70% by weight, in particular from 80 to 98% by weight, of MgO grains and also a carbon framework binder matrix resulting from carbonization, and pores, wherein the MgO grains are fixed by means of carbon bonding of the carbon framework and at least 30%, in particular from 50 to 100%, of the MgO grains have at least one sintering bridge resulting from the ceramic firing.