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He 10 July 2025, A microbial products manufacturer from Spain contacted us for biofertilizer manufacturing solutions with an annual capacity of 20.000 tons. He told us: “We need a small automatic line for biofertilizer granulation. We want to transform our microbial agents into biological fertilizer granules 3-4 mm. “We would like to learn more about your automated line and the different stages of the process.”. Finally, We send you a double roller granulation line 4 TPH, and the customer gave us excellent feedback. Next, the specific aspects of our communication in this case are detailed:

Dry chicken manure to low moisture: First of all, Manure should be dried to reduce its moisture content to around 30-40%. This step not only improves the structure of the material and its aeration, but also prevents the microbial inoculum from being diluted or suffocated by excess water. To dehydrate manure with 70% moisture, screw dehydrator is the best choice, since it offers efficiency, low energy consumption and continuous operation.
Inactivate pathogens in chicken manure: Besides, To produce biofertilizers it is necessary to eliminate pathogens, parasite eggs and weed seeds present in manure. In this sense, he caterpillar type compost turner It is an excellent option, Because its flexible displacement system and regular turning allow the manure to be transformed into a harmless material in a period of approximately 20 days., leaving it ready for biofertilizer granulation.
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Thus, Beneficial strains can multiply rapidly and form a stable biofertilizer, rich in nutrients, capable of improving soil fertility and increasing agricultural yields in a sustainable manner.
Ensures a continuous and stable supply of raw materials to the production line.
breaks down agglomerated compost and microbial materials into fine particles for further processing.
removes small stones and oversized compost fractions, thus facilitating the granulation of biofertilizers with the desired size.
homogeneously mixes the compost with the microbial agents, promoting even distribution of nutrients; At this stage, powdered microbial agents can be added using a screw conveyor..
core machine of biofertilizer granule making line; forms uniform 3‑4mm granules through a dry extrusion process, no need to dry or cool, which helps maintain microbial viability.
classifies the finished granules according to their size and recycles the non-conforming ones for new granulation.
Precisely and efficiently weighs and packages the final granular biofertilizer.
integrates and automates the entire production process of granular biofertilizers, allowing easy handling and monitoring.
Roller material: 20CrMnTi alloy steel or stainless 4Cr13.
Roller sheets suitable for the manufacture of 3-10mm biofertilizer granules.
In summary, The previous points collect the details of our communication with the client about the biofertilizer manufacturing project in Spain with an annual capacity of 20.000 tons. In addition, We put at your disposal complete equipment and solutions not only for the production of biofertilizers, but also for organic fertilizer manufacturing conventional, NPK compound fertilizer system and the SSP mineral fertilizer preparation. We invite you to request your own business plan for fertilizers now and to promote together a more sustainable agricultural production in Spain!!
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