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ZHENGZHOU SHENGHONG HEAVY INDUSTRY TECHNOLOGY CO., LTD. |
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12-15T/H Rotary Drum Granulator Machine NPK Fertilizer Product Line
Introduction for producing compound fertilizer
Compound fertilizer can supply comprehensive nutrient for crops. The production process of compound fertilizer is to combine the main nutrient elements needed for crops (such as N, P, K and other trace elements) by chemical method, that is, gather the nitrogen fertilizer, phosphorus fertilizer, potash fertilizer and other chemicals together and make into particles which are suitable for farming. Then applied into the soil, so that crops can absorb the nutrients they need from soil.
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 |
Flow chart of compound fertilizer production line
Compound fertilizer production line usually includes 9 processes, batching, grinding, mixing, granulating, drying, cooling, screening, coating and packaging. Batching, mixing, granulating, drying, and screening processes are necessary. Other processes are optional based on different capacity.
Main equipments of compound fertilizer 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 | 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 |
Characteristics of Compound Fertilizer Production Line
The compound fertilizer production line has less investment, quick
results and good economic benefits. The whole equipment process is
compact, scientific and advanced. Energy saving and consumption
reducing, no waste removal, stable operation, reliable running,
convenient maintenance. The adaptability of raw materials is wide,
and the machine is suitable for the granulation of compound
fertilizer, medicine, chemical industry, feed, etc., and the
granulation rate is high. This machine can produce various compound
fertilizer with different concentration and different types
(including organic fertilizer, inorganic fertilizer, biological
fertilizer, magnetic fertilizer, etc.). In particular, the granule
for tombarthite and ammonium carbide compound fertilizer fills the
domestic void and lead the country.
