Preparation of granulated alkaline earth metal carbonate

US5366513A · kind A · utility

Assignee

• Solvay Barium Strontium GmbH · DE

Inventors

• Dieter Goldmann · Hannover, DE
• Ludwig Pfeifer · Homborn, DE
• Karl Koehler · Bad Salzdetfurth, DE
• Peter Wallbrecht · Hannover, DE
• Norbert Mingels · Dinslaken, DE

Key dates

• Filing date: Mar 11, 1993
• Grant date: Nov 22, 1994
• Expiry date: Mar 11, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/50
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for preparing granulated alkaline earth metal carbonate, particularly barium carbonate or strontium carbonate, by adding a binding agent and optionally water; granulating the resulting mixture, preferably in the presence of water; drying the granular product; and optionally subjecting the granular product to a high-temperature treatment, in which the material to be granulated and the granulated material do not contact any inorganic refractory material during the granulation, during subsequent drying, and during any high-temperature treatment.