Mix and refractory product having a high hydration resistance produced therefrom

US8450229B2 · kind B2 · utility

Assignees

• EVONIK DEGUSSA GMBH · DE
• Technische Universität Bergakademie Freiberg—Institut für Keremik, Glas-und Baustofftechnik · DE

Inventors

• Christos Aneziris · Freiberg, DE
• Uwe Klippel · L'Isle-d'Abeau, FR
• Christoph Tontrup · Alzenau, DE

Key dates

• Filing date: Dec 10, 2008
• Grant date: May 28, 2013
• Expiry date: Dec 10, 2028

Classification

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

Abstract

Mix which comprises a) one or more very finely divided silicon dioxide powders having an average particle diameter of from 2 to 100 nm and a BET surface area of at least 30 m2/g, b) one or more particulate components selected from the group consisting of oxides, carbides and nitrides, in each case having an average particle diameter of from >0.5 μm to 30 mm, c) one or more synthetic resins as binders and d) one or more metallic antioxidants having an average particle diameter of from >0.5 to 250 μm. Process for producing a shaped body, in which to the mix is introduced into a mould, pressed if appropriate and heated to a temperature at which the synthetic resin crosslinks thermally. Shaped body which can be obtained therefrom. Process for producing a refractory shaped body, in which the shaped body is carbonized. Refractory shaped body which can be obtained therefrom.