Apparatus for the granulation of precipitation products formed from ammonium compounds

US4328189A · 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 13, 1981
• Grant date: May 4, 1982
• Expiry date: Apr 13, 2001

Classification

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

Abstract

An apparatus for granulation of precipitation products, comprising a liquid-filled reaction chamber including a granulation chamber which receives aqueous streams of compounds which precipitate to form granules. The granulation chamber has an open upper edge connected to the narrow edge of a conical surface. The upper open edge of the conical surface merges with an apron which is spaced inwardly from the inner periphery of the reaction chamber. Conduit means conduct granules downwardly from the granulation chamber. Liquid and fine granules rise upwardly within the conical surface. Granules descend back into the granulating chamber. Clean liquid passes downwardly through the annular space between the apron and the reaction chamber for removal from the space between the conical surface and the apron.