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Dust-free, high-density granules.
Uniform pellet-shaped particles.
High throughputs.
Mixing/granulation in the shortest possible time.
Economic process.
Low air/gas requirement.
Processing of different starter products.
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Process advantages
VG wet granulation is an important technology for the manufacture of
granules, pellets and tablets. Granules from vertical granulators (also forced,
moist or wet blenders) are distinguished by a compact structure with good flow
characteristics, as the product is mechanically compressed during the
process. |
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Principle of operation
For this process, Glatt offers Vertical Granulators with batch sizes from
100g to 1t/batch.
The technical design of the process has a significant effect on the
properties of the end product. In the Wet
Granulation process, powder is presented in a vertical granulator and
subsequently moistened or sprayed with molten material. The shear forces
produced by the Z-shaped rotor blades lead to an intensive mixing of the powder
and, with the addition of binder solutions, to the rapid formation of
high-density granulates. The chopper on the side wall of the container assists
the formation of larger agglomerates.
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Single Pot process:
With smaller batch sizes (up to 800l) and/or
frequently changing products, granules can also be dried and cooled in the
vertical granulator. The major advantages lie in the gentle product handling in
vacuum up to 10mbar and the comparitively small
processing area, which can be cleaned very quickly and easily. |
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In systems using the Single Pot method, the container is designed with a double
wall and can be connected to a solvent separator system. Additional
gas-stripping by means of nozzles in the lee of the rotor blades considerably
accelerates the drying of the particles.
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