Agglomeration process including a heating step for making a free-flowing granulate

US4726908A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Hans-Friedrich Kruse · Korschenbroich, DE
• Franz-Josef Carduck · Haan, DE
• Jochen Jacobs · Wuppertal, DE
• Klaus Koester · Langenfeld, DE
• Rolf Puchta · Haan, DE
• Heinz-Manfred Wilsberg · Goldkronach, DE

Key dates

• Filing date: Feb 11, 1986
• Grant date: Feb 23, 1988
• Expiry date: Feb 11, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D17/0039
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A free-flowing granulate of a powder-form or fine-grained component and a liquid component; the granulate containing at least 20% by weight of the liquid component, is prepared by moving the powder-form or fine-grained component in a mixer-granulator, adding the liquid component while mixing until a moist granulate having a particle size of at most 1.5 mm is obtained, subsequently coarsening the granulate thus obtained with an increase in temperature to a particle size of from 0.4 to 4 mm and optionally coating this coarse granulate with another powder-form and/or fine-grained component at 60.degree. to 90.degree. C. The optionally coated granulate is converted by lowering the treatment temperature into a dry-looking, free-flowing, coarse-grained product, which if desired, may be coated with another powder-form and/or fine-grained material. Despite the high percentage of a liquid component, the granulate thus obtained appears as a dry granulate and is free-flowing.