Highly porous ceramic material for absorption and adsorption purposes, particularly for animal litter/bedding, process for the production thereof and the use thereof

US4824810A · kind A · utility

Assignee

• Effem GmbH · DE

Inventors

• Rudiger Lang · Minden, DE
• Bernd Meyer · Munich, DE

Key dates

• Filing date: Jul 8, 1987
• Grant date: Apr 25, 1989
• Expiry date: Jul 8, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B41/50
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Highly porous ceramic material for adsorption and absorption purposes, particularly for animal litter, characterized by a porosity of 50 to 300%, preferably 200 to 250%; a water absorption capacity of 50 to 200%, preferably 100 to 150%, a pH-value in the range 5 to 9, preferably 7 to 8; a bulk density of 400 to 700 g/1; an internal surface (BET-N.sub.2) between 20 and 200 m.sup.2 /g, preferably between 80 and 150 m.sup.2 /g; which can be produced by firing a foamed mixture of clay or clays, optionally aggregate or aggregates, anionic or cationic surfactant or surfactants and deflocculant or deflocculants, process for the production thereof and use thereof.