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The fertilizer coating machine is a key finishing unit in compound fertilizer production lines. It applies a uniform protective or functional layer onto granule surfaces through continuous tumbling inside a rotating drum, combined with a precision spray system. This process enhances anti-caking performance and improves particle appearance. It also enables functional coatings such as controlled-release and nutrient enrichment. Consequently, it is essential for producing high-quality coated fertilizers.
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Rotary Drum
The inclined rotating drum provides the main working space where materials tumble, move forward, and complete coating and polishing in a continuous process.
Lifting Flights Assembly
Optimized internal lifting flights continuously raise and scatter materials, ensuring full exposure to the spray and improving coating uniformity.
Spray System
Equipped with adjustable spray lances and atomizing nozzles, the system delivers coating agents in a fine, even mist for maximum coverage.
Drive System
A motor and reducer drive the drum with stable and adjustable speed, ensuring smooth operation under varying production conditions.
Frame Structure
A heavy-duty steel frame supports the entire machine, ensuring stability and reliability during continuous industrial operation.
The coating process is based on rolling and spraying. Finished fertilizer granules enter the rotating drum, where they are continuously lifted and cascaded.
At the same time, coating liquid or powder is sprayed onto the moving material bed. Through repeated tumbling and layering, a uniform coating film gradually forms on the surface of each particle.
The inclination of the drum allows materials to move slowly from the inlet to the outlet, completing coating, polishing, and discharge in one continuous process.
Compound Fertilizer
Primarily used for coating NPK fertilizers to prevent caking, improve particle appearance, and ensure long-term storage performance.
Chemical Industry
Applicable for surface treatment of granular chemical materials, such as ammonium salts, nitrates, and other bulk solids, to provide protective layers.
Mining & Mineral Processing
Used for the surface modification of mineral granules to suppress dust and significantly improve flowability and handling properties.
Animal Feed & Additives
Suitable for coating feed pellets and additives to enhance nutrient stability, prevent oxidation, and improve visual quality.
Environmental & Recycled Materials
Used for coating and stabilizing recycled materials, such as fly ash or desulfurization products, to facilitate safe reuse or disposal.
| Model | Diameter (mm) | Length (mm) | Incline (%) | Rotational Speed (rpm) | Throughput (t/h) | Motor Power (kW) |
| SYM-1236 | 1200 | 3600 | 2.5 | 18.07 | 3.0 | 7.5 |
| SYM-1550 | 1500 | 5000 | 2.5 | 12.60 | 6.0 | 15.0 |
| SYM-2080 | 2000 | 8000 | 2.5 | 10.80 | 13.0 | 30.0 |
| SYM-2610 | 2600 | 10000 | 2.0 | 9.17 | 30.0 | 55.0 |
| SYM-3210 | 3200 | 10000 | 1.8 | 8.54 | 50.0 | 160.0 |
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