The granulation process of organic fertilizer production line is a key step in processing organic raw materials into granular fertilizers, which usually includes multiple stages to ensure the quality and stability of the final product. The following is a typical granulation process for processing fertilizers in an organic fertilizer production line:
1. Raw material pretreatment
Raw material collection and crushing: Collect fresh or dry organic materials, such as livestock manure, crop straw, etc., and use a crusher to crush them to a particle size suitable for granulation.
Raw material mixing: Mix the crushed raw materials with additives (such as microbial agents, nutrients, etc.) evenly to enhance the nutrient content and biological activity of the fertilizer.
2. Fermentation treatment
Raw material fermentation: The mixed raw materials are stacked in a fermentation tank or fermentation chamber, and through natural or controlled fermentation, organic matter is decomposed by microbial action to produce high-temperature sterilization, while converting the nutritional components in the raw materials.
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3. Drying and cooling
Material drying: After fermentation, the material needs to be dried using a dryer (such as a drum dryer or belt dryer) to remove excess moisture for granulation and subsequent processing.
Material cooling: The dried material has a high temperature and needs to be cooled to near room temperature using a cooling machine (such as a cooling drum) to prevent material adhesion during subsequent granulation processes.
4. Granulation
Pre treatment before granulation: Depending on the type of organic fertilizer granulator, further crushing or pre wetting of the cooled material may be required to meet the feeding requirements of the granulator.
Granulation: The pre treated material is sent to a granulator (such as a disc granulator, a roller extrusion granulator, a drum granulator, etc.), where it forms particles with a certain shape and size under the action of the granulator.
5. Particle screening and crushing
Particle screening: Use vibrating screens and other equipment to screen out particles that do not meet the size requirements, and perform secondary granulation or crushing treatment.
Crushing large particles: For the selected oversized particles, use a crusher to crush them to the desired particle size.
6. Particle post-treatment
Particle drying: For particles with high moisture content, it may be necessary to dry them again to ensure the stability and storage conditions of the final product.
Particle cooling: The dried particles need to be cooled to avoid excessive dust generation during the packaging process.
7. Packaging and Storage
Quantitative packaging: Use an automatic packaging machine to quantitatively package cooled particles into bags or boxes for easy sales and transportation.
Finished product storage: Packaged organic fertilizer products should be stored in a dry and ventilated warehouse to avoid moisture and contamination.
The granulation process of organic fertilizer production line is a systematic engineering, with each link closely connected and interdependent. It needs to be reasonably configured and adjusted according to the characteristics of raw materials, production scale, and final product requirements to ensure the efficiency of the production process and the high quality of the products.