6.10 Factors with an impact on grinding
The smaller the feed rate of source material, the larger the share of fine
particles and the circulation of air. The mechanical and temperature load
on the mill decrease. Optimal feeding largely depends on the sample and
volume and should be determined in preliminary tests.
Higher speeds shorten the grinding time and increase the share of fine
particles. The mechanical and temperature load on the mill increase
exponentially with increasing speed.
The smaller the perforation of the sieve, the slower the sample has to be
fed and the longer the milling time. The noise level decreases with finer
perforation.
Effective cooling (e.g. by using the source material exhaust) always has
benefits for grinding and mill.
The use of the various rotors depends on the consistency of the samples,
potential temperature changes and the desired grinding result. A prac-
tical test is recommended to determine the suitable rotor for your appli-
cation.
Source material feed rate
Speed
Size of sieve perforation
Cooling
Rotor
Using the device
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