Refractory shapes of ceramic fiber-containing material

US4737326A · kind A · utility

Assignee

• Didier-Werke AG · DE

Inventors

• Ludwig Wirth · Wiesbaden, DE
• Ingo Elstner · Wiesbaden, DE
• Ulrich Hintzen · Taunusstein, DE
• Rudolf Ganz · Overath, DE
• Miroslav Rausch · Schlangenbad, DE
• Robert Burger · Newton, US

Key dates

• Filing date: Nov 26, 1985
• Grant date: Apr 12, 1988
• Expiry date: Nov 26, 2005

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F27M2003/025
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Process for the production of refractory shapes of ceramic fiber-containing mateial, wherein a slurry of refractory fibers and particulate refractory materials is produced in water, the particulate refractory materials are flocculated on the fibers by use of a flocculant, and the desired shape is produced by dewatering the slurry in a suitable mold that enables the water to be removed, and the shape is dried. At least 90% of the fibers have a maximum length of not more than 500 .mu.m; flocculant is added as an aqueous solution to the dispersion of the fibers and particulate refractory material; and pressure is applied to the shape being formed during the dewatering of the slurry to form the desired shape in order to compress the shape.