Vibrating disc mill
Vibrating disc mills are used in laboratories for comminution as part of the quality control of solids. Often substances are checked for their chemical and physical composition through analyzes. Analysis methods are, for example, AAS ( atomic absorption spectrometry ), NIR ( IR spectroscopy ), ICP-MS ( mass spectrometry with inductively coupled plasma ) or XRF ( X-ray fluorescence analysis ). Precondition for an exact analysis according to these methods is to homogenize the analysis sample to the highest possible degree and to reduce it to a defined fineness. For this you can next
- Ball mills
- Rotor mills and
- Mortar grinders too
- Vibrating disc mills
use. The decision as to which mill should be used for comminution depends on the physical properties (breaking behavior, elasticity) of the initial sample as well as its feed grain size and the desired final fineness.
Working principle
Vibrating disc mills use pressure, impact and friction to comminute. The grinding set consists of a grinding jar, a grinding disk and, if necessary, a grinding ring. The grinding media located in the beaker exert extreme pressure, impact and friction effects on the grinding stock due to the vibratory movements of the drive, which is thus comminuted and homogenized.
Individual evidence
- ^ Walter Wittenberger: Chemische Laboratoriumstechnik , Springer-Verlag, Vienna, New York, 7th edition, 1973, pp. 55–56, ISBN 3-211-81116-8 .