2. Mixing:
Mixing is randomization of dissimilar particles
within the system.
Mixing may also be defined as the process in which
two or more than two components in a separate or
roughly mixed condition are treated in such a way so
that each particle of any one ingredient lies as nearly as
possible to the adjacent particles of other ingredients or
components.
3. Silverson Mixer Homogenizers:
Silverson's mixer has Silverson workhead - the heart of
machine which provided high shear mixing.
Silverson Mixer Homogenizers are fast and efficient and
are capable of producing a fine droplet or particle size,
typically in the range of 2 – 5 microns. This degree of
homogenization is suitable for the vast majority of
products, such as creams and ointments, lotions, sauces
and flavor emulsions.
4. The advantages of Silverson’s high shear rotor/stator
mixer over simple conventional stirrers or agitators stem
from the multistage mixing/shearing action as materials
are drawn through the specially designed Silverson
workhead - the heart of every machine.
Silverson mixer Homogenizers are widely used in food,
pharmaceuticals and chemical Industries.
Principle
Silverson Mixer Homogenizers works on the principle
of high shear mixing.
5. Silverson mixer Homogenizers are high shear mixers
and are capable of reducing mixing times up to 90%
when compared to conventional methods.
The specially designed workhead allow mixer to
disintegrate, dissolve and homogenize at the same time.
In conventional mixers ingredients are quickly begin to
move as a single body and dissolve by shear mixing.
This can take more time while the same thing can be
achieve in matter of seconds by Silverson mixer
Homogenizers.
6. Construction and Working:
Mixing Stages:
The 2 stage mixing cycle accelerates the dissolving process as
follows:
Stage1
The vessel is charged with liquid and the mixer is started. The
high speed rotation of the rotor blades creates a powerful suction
which draws the liquid and powdered ingredients into the
workhead where they are rapidly mixed.
7. The high-speed rotation of the rotor blades within the
workhead exerts a powerful suction, drawing liquid and
solid materials upwards from the bottom of the vessel
and into the center of the workhead.
Centrifugal force then drives materials towards the
periphery of the workhead where they are subjected to a
milling action in between the ends of the rotor blades
and the inner wall of the stator.
8. Stage2
The particles are reduced in the gap between the rotors and stator
wall. The product is forced out of the stator and projected radially
back into the body of the mix as fresh ingredients are drawn into
the workhead.
9. The materials expelled from the head are projected
radially at high speed towards the sides of the mixing
vessel.
At the same time, fresh material is continually drawn
into the workhead maintaining the mixing cycle. The
effect of the horizontal.
