GZL model double rollers dry granulator for foodstuff powder
Description
GZL model double rollers dry granulator for foodstuff powder is used to form granules without using a liquid solution because
the product granulated may be sensitive to moisture and heat.
Forming granules without moisture requires compacting and
densifying the powders. In this process the primary powder
particles are aggregated under high pressure.
Application
GZL model double rollers dry granulator for foodstuff powder can be conducted under this process: the powder is squeezed between
two counter-rotating rollers to produce a continuous sheet or
ribbon of materials.
When a roller compactor is used for dry granulation, the powders
may not possess enough natural flow to feed the product uniformly
into the die cavity, resulting in varying degrees of densification.
The roller compactor (granulator-compactor) uses an auger-feed
system that will consistently deliver powder uniformly between two
pressure rollers. The powders are compacted into a ribbon or a
sheet between these rollers and milled through a low-shear mill.
Princple
GZL model double rollers dry granulator for foodstuff powder adopts two rollers compaction. Between 2 rollers, there is a gap.
One roller is fixed and the other is floating. With the support of
hydraulic pistons, the floating roller is pushed close to the other
and the hydraulic system can has the action of compensation and
protection. In the surface of the roller, it is profiled with
plenty of grooves. Feedstock (powders) is fed into the gap between
two rollers by screw. With rotating in reverse of two rollers,
powder are compacted into "Pencils". After compacting, "Pencils"
are twice crushed into granules and screen finally.
Structure
Typical roller compaction processes consist of the following steps:
convey powdered material to the compaction area, normally with a
screw feeder, compact powder between two counter-rotating rolls
with applied forces, mill resulting compact to desired particle
size distribution. Roller compacted particle are typicall dense,
with sharp-edged profiles.
Features
Without any additive, dry powder be made to particles
Particle intensity can be adjusted, Regulate the pressure of
rollers to control intensity of product.
Operating in cycles ,working continuously.
High product output, output of one machine can be than
2000kg/h(stocking intensity 1.5
Technical parameters
| MODEL | GZL240 | GZL360 | GZL480 | GZL600 |
| Roller diameter mm | Ф 240 | Ф 360 | Ф 480 | Ф 600 |
| Width for use mm | 80 | 120-150 | 140-200 | 180-250 |
| Roller revolving speed rpm | 15~32 | 12~30 | 10~25 | 10~25 |
| Max forming pressure MPa | 12 | 16 | 21 | 30 |
| Max thickness of rolling mm | 4 | 8 | 8 | 8 |
| Output of rolling flake kg/h | 50~400 | 200~1600 | 450~3000 | 1000~6000 |
| Dia. of finshed granule mm | 0.5~6 | 0.5~6 | 0.5~6 | 0.5~6 |
| Output capacity kg | 30~180 | 120~800 | 280~1800 | 600~3000 |
| Power of main engine kw | 11 | 30 | 45 | 75 |
| Total power kw | 20 | 50 | 80 | 165 |
| Overall dimension (L×W×H mm3) |
1500×1500×2800 |
2000×2000×4500 |
2500×2500×5600 |
3200×3200×6300 |
| Total weight t | 7 | 10 | 18 | | 27 |
