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ZHENGZHOU SHENGHONG HEAVY INDUSTRY TECHNOLOGY CO., LTD. |
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ISO Rotary Drum Granulator In Compound Fertilizer Production Line
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.
1. Crusher machine
Crush granule or lump material to small powder. (Is the urea powder type or granule type in your line?)
2. Batching machine
For many kinds material weighting and send to next machine
2. Mixing machine
The mixed material should be mixed completely ,then get into granulator .
3. Granulation machine
Processing powder to granules.
4. Drying
After granulating, the moisture of fertilizer is bit high ,it’s not suitable for long-term storage so need drying process.
5. Cooling
The cooling machine is used to cool the hot fertilizer.
6. Screening
There are some non-uniform particles ,after sieved screening machine , the small particle diameter may be screened down for twice processing. And bigger granules go to the crusher machine again.
7. Crusher machine
For bigger granules from screening machine.
8. Coating machine
For compound fertilizer coating
9. Packaging
Filling the bags, and sealing. After package ,the fertilizer can be sold .
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 |
