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Title
Verfahren zur Vergroesserung der Oberflaeche von Festkoerpern
Date Issued
2001
Author(s)
Patent No
1996-19639491
1997-EP5263
Abstract
In a process for increasing the surface area of particles which absorb liquids at least to a limited degree, the particles are exposed to a liquid, or to a humid atmosphere containing the liquid, until the liquid has penetrated into at least the surface layers. The liquid-bearing particles are then exposed to microwave radiation until the penetrated liquid is vaporised. Also claimed are processes using the principle of the above process for roughening the surface of or for the size reduction of particles. ADVANTAGES - The process is simpler and uses less energy than mechanical or chemical processes, and can be applied to very small or less friable materials.
Language
de
Patenprio
DE 1996-19639491 A: 19960926