Method and device for the disintegration of especially inorganic materials

US7681820B2 · kind B2 · utility

Assignee

• Krause Maschinenbau GmbH · DE

Inventors

• Peter Krause · Acton, CA
• Alfred Baron · Munich, DE
• Georg Hilger · Bad Aibling, DE
• Walter Menzel · Lehrte, DE
• Ulf Pahnke · Starnberg, DE
• Rainer Krenski · Siegsdorf, DE

Key dates

• Filing date: Nov 26, 2008
• Grant date: Mar 23, 2010
• Expiry date: Nov 26, 2028

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B02C13/22
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method for the disintegration and tribochemical activation of especially inorganic materials having a crystalline structure, wherein the starting materials are comminuted (disintegrated) to a particle size of less than 1 μm by the effect of impacting pressure fronts at a pulse duration of less that 10 μs and a sequence frequency of more than 8 kHz. A conglomerate of activated mixed crystals is then obtained having an increased aptitude for the formation of modified crystals when water is added. The duration of the effect of the impacting pressure fronts continues until the crystal lattice structure of the particles is destroyed. A device for the disintegration and tribochemical activation of said materials is based on rotating disks whereon molded bodies with aerodynamic profiles are arranged, the molded bodies being continuously displaced in a transonic speed range and impacting pressure fronts being produced on the outflow surfaces thereof.