BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI - Universitatea ...

148 Ileana Fulga and Eugen Strajescu
The effect of the micronization about the dispersed pigments can be
observed the besting the case of the sample of Prussian Blue (fig. 4): being in a
non micronized stadium this pigment presents agglomerates at 100-150 μm,
whiles after the micronization it is to observe a granulometry contained
between 20-25 μm.
Fig. 4 – Pigment (Prusia blue) nonmicronizes = 150 μm (left) and
micronized = 20 μm (right).
Fig. 5 – Example of cosmethic powders micronized with optimization
algorithms; visualization on microscope with phase contrast.
Even without the microscope or another magnifier, from the photos'
observation it is to note the intensification of the chromatic coverage of the
pigment (fig. 2), because after the micronization, the specific surface of the
product is majorized for 2000 - 3000 times, and particles are very uniform from
the point of view of the granulometry.
Another object of the optimization is the getting of a micronization with a
plain classification room, in order to not charge to frequent the mill (fig. 6).