Introduction of DAP Fertilizer Drum Granulation Production Line
The core equipment of the DAP granular fertilizer production line
is the drum granulator. Through the wet agglomeration process, the
drum granulator utilizes the extrusion force generated by the
rotation of the cylinder and liquid-phase conditions to agglomerate
DAP raw materials (such as phosphoric acid, ammonia gas, triple
superphosphate slurry, etc.) into spherical granules. The interior
of the equipment is lined with rubber sheets or acid-resistant
stainless steel liners, enabling automatic scar removal. This
design eliminates the traditional scraper device and reduces
material adhesion.
Parameter
Model | Inner diameter (m) | Inclination (° ) | Rotation speed ( r/min ) | Power ( kw) | Capacity ( t/h ) |
ZG1240 | 1.2 | 2-5 | 4.7 | 5.5 | 1-3 |
ZG1450 | 1.4 | 2-5 | 5 | 7.5 | 3-4 |
ZG1560 | 1.5 | 2-5 | 5 | 11 | 5-8 |
ZG1870 | 1.8 | 2-5 | 3.9 | 15 | 8-10 |
ZG2080 | 2 | 2-5 | 3.9 | 18.5 | 10-15 |
ZG2290 | 2.2 | 2-5 | 3.2 | 22 | 15-20 |
ZG24100 | 2.4 | 2-5 | 3 | 30 | 20-25 |
Process Flow of the Drum Granulation Production Line
1. Raw Material Batching
Raw materials such as phosphoric acid, ammonia gas, triple
superphosphate slurry, and potassium fertilizer are mixed in
proportion to ensure balanced nutrient content. For example, the
concentration of phosphoric acid needs to be ≥40% P₂O₅ (for DAP production).
2. Granulation Stage
Ammoniation Granulation: Ammonia gas is injected into the drum,
where it undergoes a neutralization reaction with phosphoric acid.
This raises the temperature of the slurry and promotes granule
formation.
Cold Granulation Process: A small amount of water is added, and
granules are formed through mechanical extrusion. This process is
suitable for low-concentration compound fertilizers.
3. Post-Processing Procedures
Drying and Cooling: Granules are sent to a dryer to reduce moisture
to a safe range, then passed through a cooler to prevent caking.
Screening and Coating: Oversized/undersized granules are screened
out, and qualified products are coated to improve appearance and
storage stability.
Quantitative Packaging: Automatic packaging machines complete the
sub-packaging of finished products, with an error rate of <0.5%.
4. Return Material Recycling
Unqualified granules screened out are returned to the granulator
for re-granulation. The return material ratio must be stable to
maintain system balance.
5.Dust and Exhaust Gas Treatment
The exhaust gas from the dryer and cooler is treated through
cyclone dust collection + dilute phosphoric acid washing, which
reduces dust emissions and meets environmental protection
requirements.
Q&A
Q: Does your factory offer after-sales service for the equipment sold?
A: Yes. We provide after-sales service coverage for all equipment
purchased from our factory.
Q: How much NPK fertilizer can a drum granulator produce in one year?
A: The TIANCI drum granulator can produce 10,000 to 600,000 tons of
NPK compound fertilizer annually. To meet customers' demands for
higher output, we offer customization services.
Q: Could you please confirm whether installation services for the
drum granulator are available following its purchase?
A: Yes. After the equipment arrives at your factory, we will send
experienced engineers to your site to provide installation guidance
and ensure the equipment operates normally.
Q: Could you please specify the hourly output range of your drum
granulator?
A: The standard hourly output of our drum granulator ranges from 1 to
25 tons. If you have higher output demands (e.g., over 25 tons per
hour), we can tailor a customized solution based on your specific
production needs.
