In the Ultra Centrifugal Mill, grinding
takes place by impact and
shearing action between the rotor
and the fixed ring sieve. The feed
material passes through the funnel
with splash-back protection onto
the rotor. The centrifugal acceleration
throws it outward with great
energy and it is pre-crushed on
impact with the wedge-shaped
rotor teeth moving with a high
differential speed. It is then finely
ground between the rotor and thesieve ring. This two-stage grinding
ensures particularly gentle but
fast processing. The feed material
only remains for a very short time
in the grinding chamber. As soon as
it is finer than the aperture width
of the sieve used, it is collected in
the collecting vessel enclosing the
grinding chamber or in the downstream
cyclone or paper filter bag.