Dry Roller Extrusion Granulator In NPK Compound Fertilizer
Production Line
Introduction of NPK Fertilizer Production Line
NPK Compound fertilizer production line is widely applied to
produce compound fertilizer and the capacity ranges from
5000-200,000 tons/year. It can granulate NPK, NP, ANP, DAP, MAP,
CAN, SSP and other materials into compound fertilizer particles in
one processing line.
Working Process Of NPK Compound Fertilizer Making Production Line
It adopts the design solution of extrusion sliding model,the raw
materials pass through double roller,after that,enter into
scattering room, come out as granulation, a sieving was mounted at
the bottom of the machine, which is customized according to
client’s requirement, last, sieve out the granules which is
qualified, the rest of materials return to mixer and be
re-granulated.
Raw Material For NPK Compound Fertilizer Making Production Line
Potassic fertilizers : potassium sulfate, potassium chloride,plant
ash etc.
Nitrogen fertilizers : ammonium chloride, ammonium sulfate,
ammonium sulphate etc.
Phosphate fertilizer : superphosphate, triple superphosphate,
calcium magnesium phosphate
Main Equipments Of NPK Compound Fertilizer Making Production Line
| No. | Processes | Machines | Function of machines |
| 1 | Batching process | Automatic batching machine | Ratio raw materials by formula |
| 2 | Grinding process | Grinder | Grind granules to powder |
| 3 | Mixing process | Mixer | Mix powder evenly, If necessary, add water, or other micro-elements |
| 4 | Granulating process | Feeding machine | Feed mixed powder into granulator evenly |
| Granulator | Make mixed powder into fertilizer granules |
| 5 | Screening process | Screener | Screen out required size from fertilizer granules |
| 6 | Coating process | Coating machine | Coat color, anti-blocking agent, microelements etc on fertilizer
granules |
| 7 | Packaging process | Air compressor | Generate power to packaging machine |
| Packaging machine | Package fertilizer granules into bags |
Granules Strength and Appearance In NPK Compound Fertilizer Making
Production Line
Unit crushed strength : 10-25N
Shape of finished products : oval, irregular, wheat shaped, etc.,
can also be customized according to customer requirements.
Material moisture requirement : not more than 10%
The rate of ball formation : 95%
Output : 1-4t/h ( can combine multiple granulators work together to
increase output, see below
technical process chart).
Granule size : 3-8mm (popular market granule diameter: 2.8-4mm)
Features of NPK Fertilizer Production Line
1, Simple machine structure
2, Easy operation and maintenance
3, Low power consumption
4, Once forming,no drying process,normal temperature granulating
5. Double shaft power output, each shaft through coupling to drive
its roller to do synchronous work in opposite direction, granule
forming is better and the strength is higher.
6. The design of contraposition adjustment of ball socket is simple
and convenient for the client to adjust by themselves. Provide the
drawing of roller adjustment and operation steps.
7. All machines before leave the factory, had carried out the test
and trial production by professional workers.
