Process for the granulation of precipitation products formed from ammonium compounds

US4394363A · kind A · utility

Assignee

• Dr. C. Otto & Comp. GmbH

Inventors

• Egon Haese · Bochum, DE
• Rolf Willms · Witten, DE
• Karl D. Schultheiss · Bochum, DE

Key dates

• Filing date: Apr 29, 1981
• Grant date: Jul 19, 1983
• Expiry date: Apr 29, 2001

Classification

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

Abstract

A process for the granulation of precipitation products, formed from the reaction of ammonium compounds with alkaline-earth compounds, by introducing into the bottom of a reaction chamber an ammonium and alkaline-earth compound such that the alkaline-earth compound in aqueous solution is immediately and intimately mixed with the ammonium compound to form alkaline-earth compound precipitation products in the form of hard granules which are difficultly soluble in water. The alkaline-earth precipitation products are easily withdrawn from the bottom of the reaction chamber without forming a lime sludge which is difficult to remove.