Resign for powder coating

Rotor speed mills are frequently used to comminute powder coatings. In combination with a powerful high-performance cyclone, with an exhausting system ground particles are exhausted off quickly.

Because of the higher rotor speed by means of the P-14pl (up to 22.000rpm), the particle size distribution of the ground material is finer, than in comparison with the P-14cl. Due to the sophisticated design of the rotor of the P-14pl, the temperature development of the sample as well as sample residues in the grinding chamber and cleaning of the instrument could be optimized.

In order to avoid a contamination in the tube and grinding chamber between different samples, 10 grams of sample were comminuted and discarded. The resulting layer of electrostatically charged particles in the system, did reduce the inevitable residue of the sample quantity for comminution.

The sample was added continously within 70 seconds, and a bulk part of the material was collected in the collecting glass oft he high-performance cyclone. The rotor and the sieve ring are largely free of residues, which would allow a larger sample amount to be comminuted.

Residues in the grinding chamber were picked up with a brush, whilst the cyclone was switched on, as well as the grinding parts were cleaned thoroughly with running water.

Powder coating residues, slightly melted due to friction, were located on the outer area of the labyrinth disc and on the rotor edge. A small wooden spatula will help to remove such pieces without scratching. The total cleaning effort (wet) was less than 5 minutes.