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Description

Technical Description of Compound Fertilizer Production Process

1. Overview

The production of compound fertilizer involves a series of well-coordinated processes. Each step is carefully controlled to ensure product quality and efficiency. The process begins with formulating the fertilizer based on market demands and available raw materials, followed by a series of processing stages.

NPK Compound fertilizer production line

Description

Technical Description of Compound Fertilizer Production Process

1. Overview

The production of compound fertilizer involves a series of well-coordinated processes. Each step is carefully controlled to ensure product quality and efficiency. The process begins with formulating the fertilizer based on market demands and available raw materials, followed by a series of processing stages.

Production Steps
  • Raw Material Mixing
  • Crushers and Mixers
  • Granulators
  • Drying
  • Second Drying
  • Screening
  • Cooling
  • Finished Product Screening
  • Coating
  • Packaging
  • Dust Removal
  • Steam Boiler

Raw materials are added to storage hoppers on
electronic scales.
Materials are measured and transferred to a mixer via belt conveyors, ensuring even flow and preventing Clumping.

NPK Compound fertilizer production line NPK Compound fertilizer production line

The pre-mixed raw materials are fed into a double shaft crusher.

The crusher ensures thorough crushing and mixing of the materials before transferring them to the granulator

NPK Compound fertilizer production line NPK Compound fertilizer production line

The powdered materials enter a rotary drum granulator.

With the help of rotation and adhesive, the materials form into granules, which then move to the dryer.

NPK Compound fertilizer production line

NPK Compound fertilizer production line

Granules are dried using a rotating cylinder with direct heat transfer.

The dryer uses high-temperature air to evaporate moisture, and a secondary granulation area helps in re-pelletizing incomplete granules

NPK Compound fertilizer production line

The partially dried granules go through a secondary dryer.

This step uses micro-negative pressure to further dry the granules and improve the working environment.

NPK Compound fertilizer production line

After drying, the granules are screened to separate fine powders and large particles.

Fine powders are returned to the granulator, while the screened granules proceed to cooling

NPK Compound fertilizer production line

Rotary coolers reduce the temperature of the granules using counter-current airflow.

 This step also reduces moisture and prepares the granules for packaging.

NPK Compound fertilizer production line

The cooled granules are screened again to remove any remaining fine powders.

Finished granules are sent to the coating section, while fine powders are returned for re-granulation.

NPK Compound fertilizer production line

Coating agents are applied to the granules to prevent clumping and enhance quality.

The coating process improves the granules' surface smoothness and brightness.

NPK Compound fertilizer production line

Coated granules are weighed and packed into bags using an automatic packaging machine.

Packed bags are then sent to the warehouse for storage.

NPK Compound fertilizer production line

Drying and Cooling Dust:

Exhaust gases from drying and cooling processes are treated in dust collectors to remove particulates before being released.

Return of Dust:

Collected dust is returned to the granulator for reprocessing.

NPK Compound fertilizer production line

 

NPK Compound fertilizer production line

Our NPK compound fertilizer production line efficiently produces both organic and inorganic fertilizer granules, with an annual capacity ranging from 10,000 to 300,000 tons.

Our NPK Compound fertilizer production line is composed of the single equipment as follows.
Automatic Feeding system/Pan Mixer

Production Steps
NPK Compound fertilizer production line
Raw Material Mixing

Raw materials are added to storage hoppers on
electronic scales.

Materials are measured and transferred to a mixer via belt conveyors, ensuring even flow and preventing Clumping.

NPK Compound fertilizer production line
Crushers and Mixers

The pre-mixed raw materials are fed into a double shaft crusher.

The crusher ensures thorough crushing and mixing of the materials before transferring them to the granulator

NPK Compound fertilizer production line
Granulators

The powdered materials enter a rotary drum granulator.

With the help of rotation and adhesive, the materials form into granules, which then move to the dryer.

NPK Compound fertilizer production line
Drying

Granules are dried using a rotating cylinder with direct heat transfer.

The dryer uses high-temperature air to evaporate moisture, and a secondary granulation area helps in re-pelletizing incomplete granules

NPK Compound fertilizer production line
Second Drying

The partially dried granules go through a secondary dryer.

This step uses micro-negative pressure to further dry the granules and improve the working environment.

NPK Compound fertilizer production line
Screening

After drying, the granules are screened to separate fine powders and large particles.

Fine powders are returned to the granulator, while the screened granules proceed to cooling

NPK Compound fertilizer production line
Cooling

Rotary coolers reduce the temperature of the granules using counter-current airflow.

 This step also reduces moisture and prepares the granules for packaging.

NPK Compound fertilizer production line
Finished Product Screening

The cooled granules are screened again to remove any remaining fine powders.

Finished granules are sent to the coating section, while fine powders are returned for re-granulation.

NPK Compound fertilizer production line
Coating

Coating agents are applied to the granules to prevent clumping and enhance quality.

The coating process improves the granules’ surface smoothness and brightness.

NPK Compound fertilizer production line
Packaging

Coated granules are weighed and packed into bags using an automatic packaging machine.

Packed bags are then sent to the warehouse for storage.

NPK Compound fertilizer production line
Dust Removal

Drying and Cooling Dust:

Exhaust gases from drying and cooling processes are treated in dust collectors to remove particulates before being released.

Return of Dust:

Collected dust is returned to the granulator for reprocessing.

NPK Compound fertilizer production line
Steam Boiler
Optional , which depend on your formulation

Our NPK compound fertilizer production line efficiently produces both organic and inorganic fertilizer granules, with an annual capacity ranging from 10,000 to 300,000 tons.

Our NPK Compound fertilizer production line is composed of the single equipment as follows.
Automatic Feeding system/Pan Mixer

Raw Materials for NPK Compound Fertilizer Production line

For Nitrogen( N), you can choose Urea, Ammonium Sulphate , DAP , MAP ,

For Phosphorus (P2O5), you can choose DAP, MAP, SSP, TSP, Powder of Rock phosphate

For Potassium (K2O), you can choose the KCL, K2SO4

Trace element , you can choose according to your requirement

Manufacturing Process for NPK Compound Fertilizer Production Line

NPK Compound fertilizer production line

The Specification of NPK Compound Fertilizer Granule

  • Formulation such as NPK 12-8-15, NPK 12-12-17, NPK 15-15-15, NPK 13-6-27 + 2 MgO ,which can be produced according to your requirement .
  • Size : from 2mm to 4.75mm , which can be produced according to customer’s requirement
  • Moisture <3% , which can be controlled according to customer’s requirement

Picture of Fertilizer Granule

NPK Compound fertilizer production line   NPK Compound fertilizer production line

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