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The primary objective with any liquid/solids process is to intimately
distribute the liquid droplets throughout the solid materials so that
the individual solid particles receive equal amounts of liquids. The
traditional method of liquid injection introduces the liquid into
the vessel by gravity. Uneven distribution of the liquid tends to
saturate some of the material. Excess liquids must be added to insure
minimum coverage of all particles.
Liquid-Solids
In a Gemco Tumble Blender or Dryer, liquids can be efficiently blended
with solids up to 75%, depending on solids absorption. This method
of blending is suitable for intimate dispersions of liquids to solids,
extension of pigments, flavorings and odors, and breakdown of lumps
or agglomeration of particles. The Gemco Liquid Solids Agitator is
similar to the High-Speed Agitator. The agitator drive shaft is hollow
to form a passageway for liquids and the agitator disc is split to
form a radial crack for a fine mist of liquid to exit under high-speed
rotation.
Liquids can be injected into Gemco equipment utilizing one of the
two following methods.
Standard Gravity Feed
This system is best suited for injection of water like liquids of
5% to 20% injection ratios. Liquids are introduced into the vessel
by way of centrifugal action between apertures in the agitator disc
assembly.
Airless Spray
The airless spray design is much more versatile in operation than
the standard dispersion disc design. The airless spray system has
fewer restrictions, offering finer atomization of liquids (to 6 microns)
for extended coatings and/or a more closely controlled granulation
size range.
This design also allows for greater flexibility in load levels. It
is not uncommon to have a successful liquid addition at load levels
down to 50% of the rated capacity. This design does not automatically
require an agitator bar.
Precision Granulations
When used as the liquid injection device in Gemco formulators and
blenders, airless spray provides highly uniform granulations. Precise
droplet size control guarantees the consistency of the process, time
after time.
Spray On The Product
Since the nozzle only sprays down on the product, there is no liquid
spray-through to the walls. Caked material on the discs is eliminated.
Active ingredients in the spray are not lost in the cake.
Capabilities:
- Handles
highly viscous liquids without dilution or carriers.
- Closed
system during blending protects workers from fumes.
- Sprays
at volumes up to eight (8) gallons per minute.
- Produces
liquid droplets as small as 6 microns.
- Provides
precise control over liquid amounts down to tenths of an ounce.
- Can
be equipped with heaters to liquefy solid materials.
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