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Manufacturing of Biofertilizers in Spain with Annual Capacity 20.000 tons

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:

Case Summary
  • Ability: 4 t/h
  • Materials: microbial agents, gallinaza
  • Requirements: production of biofertilizer granules 3-4 mm
  • Budget: $100,000
  • Solution: sistema de granulación de doble rodillo
Notes: The above information is for reference only. Contact us for customized fertilizer solutions!! Get a free quote

Can we mix our microbial products with chicken manure to produce biofertilizers?

Of course. Combining the manufacture of biofertilizers with manure waste management is an ideal and very profitable project. However, since the Spanish client planned to mix the microbial agents with fresh chicken manure with 70% moisture, two pretreatment stages were required to complete the process correctly.

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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Can we mix our microbial products with chicken manure to produce biofertilizers?

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.

Is there a granulation line economic for the manufacture of biofertilizers 20.000 tons per year in Spain?

During communication, The Spanish manufacturer of microbial products told us that for this small biofertilizer granulation project, His budget was 100,000USD. Depending on that budget, the best alternative is a double roller granulation line.Por una parte, Its transformation rate of compost and microbial powder into biofertilizer granules exceeds 95% granulation yield. On the other, by not requiring drying or cooling, can ensure greater survival of beneficial microorganisms. In general, in addition to the caterpillar type compost turner, The line includes the following equipment:
  • Feed Hopper

    Ensures a continuous and stable supply of raw materials to the production line.

  • vertical crusher

    breaks down agglomerated compost and microbial materials into fine particles for further processing.

  • Rotary sieve for powders

    removes small stones and oversized compost fractions, thus facilitating the granulation of biofertilizers with the desired size.

  • single shaft mixer

    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..

Manufacturing of Biofertilizers in Spain with Annual Capacity 20.000 tons - Figure 1
  • Double Roller Granulator

    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.

  • Granule sorting sieve

    classifies the finished granules according to their size and recycles the non-conforming ones for new granulation.

  • Single Bucket Bagging Scale

    Precisely and efficiently weighs and packages the final granular biofertilizer.

  • PLC control cabinet

    integrates and automates the entire production process of granular biofertilizers, allowing easy handling and monitoring.

Manufacturing of Biofertilizers in Spain with Annual Capacity 20.000 tons - Figure 1

Can you offer additional spare parts along with delivery of biofertilizer granulation line?

The answer is affirmative. As a source manufacturer of fertilizer equipment, YUSHUNXIN can supply, with minimal additional cost, spare parts for roller plates, either identical to the originals or with a personalized design. For example:

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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