A small-scale compound fertilizer production line usually refers to a relatively small-scale compound fertilizer production system, suitable for small agricultural enterprises, farms, or cooperatives. Compared to large-scale production lines, its equipment configuration and process flow are simpler and more economical. The following is an overview of the equipment and process flow of a typical small-scale compound fertilizer production line:
1. Raw material pretreatment
Raw material measurement and mixing: Use an electronic measuring scale to accurately weigh various raw materials (such as urea, monoammonium phosphate, potassium chloride, etc.), and use a mixer to thoroughly mix the raw materials to ensure accurate composition ratios of the compound fertilizer.
2. Granulation
Granulator: Feed the evenly mixed raw materials into the fertilizer granulator for granulation. The common granulators in small production lines include disc granulators and drum granulators, among which disc granulators are more popular due to their simple structure and easy operation.
3. Drying and cooling
Drying machine: After granulation, the particles need to go through a drying machine to remove excess moisture, improve particle strength, and prevent clumping. The commonly used dryer in small production lines is a drum dryer.
Cooling machine: The dried particles need to be cooled to room temperature or close to room temperature to prevent clumping due to high temperatures during the packaging process and to avoid damage to the packaging materials.
4. Screening
Screening machine: Screen the cooled particles to remove unqualified particles (such as oversized or undersized particles), ensuring uniform particle size and stable quality of the product.
5. Packaging
Automatic packaging machine: Quantitatively package qualified granular fertilizers after screening, commonly in the form of bags. The packaging machine can automatically complete weighing, filling, and sealing operations.
6. Finished product storage
Storage facilities: Packaged compound fertilizers should be stored in a dry and ventilated warehouse to avoid moisture and contamination.
7. Auxiliary equipment
Conveying equipment: such as belt conveyors and screw conveyors, used for conveying materials between various processes.
Dust removal equipment: used to collect and process dust during the production process, improving the working environment.
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Process description
Raw material measurement and mixing: Accurately measure various raw materials and mix them evenly.
Granulation: Send the mixed raw materials into a fertilizer granulator for granulation.
Drying and cooling: After granulation, drying and cooling are carried out to ensure the quality of the particles.
Screening: Screening to remove unqualified particles.
Packaging: Quantitatively package qualified granular fertilizers.
Storage: Store packaged compound fertilizers for sale.
The equipment configuration and process flow of a small-scale compound fertilizer production line need to be appropriately adjusted and optimized based on factors such as production scale, raw material characteristics, target product quality, and budget to achieve maximum economic benefits.
