High Efficiency Rotary Drum Fertilizer Plant Line For NPK Compound
Fertilizer
Introduction For Producing Compound Fertilizer
Rotary Drum Fertilizer Plant Line is widely applied to produce
compound fertilizer and the capacity ranges from5000-200,000
tons/year. It can granulate NPK, NP, ANP, DAP, MAP, CAN, SSP and
other materials into compound fertilizer particles in one
processing line. This equipment can specially used for
manufacturing compound fertilizers with different concentrations
and types, such as organic fertilizers, inorganic fertilizers,
biological fertilizers and magnetic fertilizers, etc. It is mainly
used for producing spherical particles with a diameter ranging from
1mm to 4mm.
Raw Material For Producing Compound Fertilizer
Compound fertilizer is the fertilizer containing two or all three
of the three basic plant nutrients—Nitrogen, Phosphorus, and
Potassium, as well as microelements, such as B, Mn, Cu, Zn, and Mo.
The raw material can be powder or bulk, mostly are as below:
| Nitrogen | Phosphorus | Potassium |
| Calcium nitrate | urea | Single superphosphate | Kainit |
| Ammonium bicarbonate | Ammonium chloride | Rock phosphate | Potassium chloride |
| Nitrate of soda | Ammonium sulphate nitrate | Dicalcium phosphate | Potassium sulphate |
| Ammonium sulphate | Ammonium nitrate | Triple superphosphate | Potassium nitrate |
Working Principle Of Producing Compound Fertilizer
To produce high nitrogen compound fertilizer, one important
equipment is needed in the granulating process: the spraying
system. The melting tank melt the urea and then spray the melted
liquid into the granulating machine so that it will mix with powder
phosphate fertilizer, potash fertilizer and other nitrogen
fertilizer. Then with the help of the granulator, the liquid and
other raw materials will be mixed and granulated. This production
technology is used to produce compound fertilizer or complex
fertilizer with high nitrogen content from 25%-45%.
Main Equipments of Producing Compound Fertilizer
| 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 | Drying process | Dryer | Dry fertilizer granules to low moisture by hot air |
| Hot stove | Generate hot air to dryer |
| Cyclone | Collect dust from dryer |
| 6 | Cooling process | Cooler | Cool fertilizer granules to normal temperature |
| Cyclone | Collect dust from cooler |
| 7 | Screening process | Screener | Screen out required size from fertilizer granules |
| 8 | Coating process | Coating machine | Coat color, anti-blocking agent, microelements etc on fertilizer
granules |
| 9 | Packaging process | Air compressor | Generate power to packaging machine |
| Packaging machine | Package fertilizer granules into bags |
Advantanges of Producing Compound Fertilizer
1. Equipped with advanced fertilizer manufacturing technique, this
fertilizer production line can finish fertilizer granulation in one
process.
2. Adopts advanced rotary drum granulator, granulating ratio is up
to 90%, high intensity of granules,
3. The inner cylinder body adopts high quality rubber plate lining
structure which prevents the raw material from sticking on the
plate.
4. Wide adaptability of raw materials, suitable for compound
fertilizer, pharmaceuticals, chemicals, fodder and so on.
5. High-quality, stable performance, anti-corrosion and
wear-resistant materials components, abrasion proof, low energy
consumption, long service lifespan, easy maintenance and operation,
etc.
6. High efficiency and economic returns, and the small part of
feeding back material can be granulated again.
7. Adjustable capacity according to customers requirements.
