Organic Fertilizer Granule and Powder Production Line in Uruguay

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Why Uruguay? (Market Context for Organic Fertilizer)

Uruguay’s agricultural structure makes a modest manure-based fertilizer project credible. Official statistics recorded about 11.45 million cattle in 2024, far above the country’s human population, while the 2024/25 crop season included roughly 1.46 million tonnes of wheat and 1.17 million tonnes of malting barley. The opportunity is therefore tied to a real livestock base and a substantial cereal sector, not to an exaggerated estimate of the organic-fertilizer market.

For Durazno, the most practical manure sources are dairy units, cattle finishing operations and other farms where manure is collected in concentrated form. Manure deposited directly across extensive grazing land is not treated as a feedstock that can simply be gathered cheaply. Poultry litter and solid pig manure are used as supplementary nutrient-rich streams when contracts are available.

Uruguay regulates organic fertilizers and other bio-inputs through MGAP’s agricultural-services system. Organic fertilizers are covered by the registration framework created under Resolution 97/018 and the technical requirements adopted in Resolution 536/019. A commercial product therefore needs registration, technical documentation and analytical evidence; using composted manure does not by itself make the product approved for sale.

Uruguay also has a separate framework for organic-production control and certification. A registered fertilizer may be suitable for certified farms only when it complies with the relevant permitted-input rules; applying organic fertilizer does not automatically make the crop certified organic.

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Raw Materials: Manure and Crop Residues

The raw-material plan reflects Uruguay’s livestock-heavy agriculture. Cattle manure is the main stream, poultry litter provides a drier nutrient-rich component, pig manure is limited to solid or dewatered material, and cereal residues provide structure and carbon for aerobic composting.

Gross input is intentionally higher than finished output. Composting converts part of the biodegradable carbon to carbon dioxide, while several thousand tonnes of water leave as vapor during active composting, curing and final moisture control. Powder can retain more moisture than the granular product, so the two finishing routes do not have identical mass balances.

• Liquid slurry is not accepted into the normal line; pig and cattle material must be stackable or mechanically dewatered.
• Incoming loads are checked for plastics, metal, veterinary waste, stones and excessive bedding contamination.
• Crop residues are chopped only as required for porosity; they are not ground into fine powder before composting.
• Water is added only if the mixed compost falls below the desired biological moisture range; recovered leachate is preferred when suitable.
• Supplier contracts spread manure deliveries through the year, while dry straw is stored mainly at farms or contractor yards.

This procurement model keeps the factory compact. The site needs only several days of manure buffer and a limited straw inventory instead of thousands of tonnes of seasonal stock.

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The Site and Building

The project uses an approximately 5,200 m² site near Durazno. For a 10,000 T/A plant, this gives enough space for composting and truck access without overbuilding a large industrial estate. Covered operating area is about 2,400 m², while the rest is used for circulation, a small wash area, drainage, fire access and limited outdoor handling.

The compost hall is sized from material in process rather than annual tonnage. About 60 tons of wet feed enters on a typical production day. A 15–18 day active phase requires roughly 900–1,100 tons in the hall at one time; with typical compost bulk density and 1.5–2 m working depth, the 900 m² area is workable when lanes are well organized.

Curing is shorter and lighter because mass and moisture have already fallen during active composting. The project therefore does not dedicate another very large warehouse to a fixed 30-day aging period. Final maturity is determined by temperature trend, odor, stability and product testing.

Durazno has lower land pressure than Montevideo, but the customer still avoids unnecessary building area because roofing, enclosed odor-control volume and concrete directly increase capital cost and fan power.

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Equipment Configuration 

The equipment package is built around a compact 4–5 T/H finishing section and a 2–3 T/H granular branch. The granular product uses RICHI’s FZLH fertilizer-pellet series to produce cylindrical granules.

The organic fertilizer pellet making machine is the FZLH320. Its 2–3 T/H capacity matches the 5,000 T/A granular target because the project can make granules in dedicated production campaigns rather than forcing powder and granules through the same finishing equipment at the same moment.

The fixed RICHI equipment package is USD 225,000. The complete USD 420,000 project total also includes the compact compost hall, foundations, local steelwork, electrical connection, drainage, odor/dust systems, installation, inland delivery, commissioning and initial working capital.

A single shared compost turner is more appropriate here than three independent machines permanently assigned to three bays. It reduces capital, maintenance and idle equipment while still allowing each lane to be turned according to temperature and oxygen conditions.

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Process Flow

This organic fertilizer production line first stabilizes the manure blend, then splits the finished compost into powder and granular routes. Powder production avoids unnecessary pelletizing, while the granular route uses FZLH ring-die densification for easier transport and mechanical application.

Step 1: Receiving and Inspection

Stackable cattle manure, poultry litter and solid pig manure arrive by covered tipper or sealed truck depending on material condition. The receiving area checks moisture, foreign objects and load condition. Vehicles carrying manure use the small wash pad before leaving the site when cleaning is required.

Step 2: Straw Preparation

Wheat straw and corn residues are opened and chopped to a few centimeters so they can distribute through the manure and maintain air spaces during composting. The chopper is sized for intermittent batch preparation rather than a 15 T/H industrial straw-processing line.

Step 3: Batching and Mixing

Manure and chopped crop residues are combined in the twin-shaft mixer. Initial moisture is adjusted toward roughly 50–60% only when the actual blend requires it. There is no fixed annual clean-water addition; poultry litter and straw ratios, rainfall exposure and manure moisture change the requirement from batch to batch.

Collected leachate can be returned to early compost batches when its quality is suitable. This reduces freshwater demand while keeping recirculation away from finished product and packaging areas.

Step 4: Active Aerobic Composting

The mixed material enters the covered compost lanes for approximately 15–18 days. Temperature, oxygen and moisture determine turning and aeration. A practical thermophilic range is generally around 55–65°C for pathogen reduction and active decomposition; the process avoids intentionally holding the compost at 70–85°C, where excessive heat can suppress useful microbial activity.

Forced aeration supports the active phase, while the shared turner loosens compacted material and redistributes wetter or cooler zones. Odor-bearing air from the most active receiving and composting areas is captured and treated through a biofilter sized to the actual enclosed air volume.

Step 5: Curing

Stabilized compost moves to the curing area for roughly 10–20 days as required by maturity and moisture. The material is turned less frequently than during the active phase. Product is released to finishing only when temperature has returned close to ambient and the batch shows stable, earthy characteristics.

Step 6: Crushing and Primary Screening

Cured compost passes through the 4–5 T/H crusher and rotary screen. Oversize lumps return to the crusher. This common section creates a uniform feed for both powder and pellet routes.

Step 7: Powder Fertilizer Production

About 5,000 T/A is diverted after screening. The powder route receives final particle-size control and is packed directly when moisture and laboratory results meet the product specification. A practical screened organic-fertilizer powder can contain particles up to several millimeters; it does not need to be reduced to extremely fine dust.

Step 8: Granular Fertilizer Production

The remaining 5,000 T/A enters the Compost granulating machine application route using the FZLH320 ring-die unit. Material is conditioned to a suitable pelletizing moisture and pressed into 4–6 mm cylindrical granules. The related organic fertilizer granulator machine reference therefore describes ring-die pelleting rather than a machine that dries fertilizer internally.

Fresh pellets are cooled and screened before packing. Clean fines return to the pellet route. If moisture remains above the storage target, low-temperature drying is added as a separate controlled step.

Step 9: Packing and Storage

Powder and granules are packed in 20 kg, 25 kg or 40 kg bags, with FIBC available for larger farms and cooperatives. Finished stock is normally kept below about 10 days so the 250 m² warehouse remains sufficient.

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Utilities and Consumption

This compact project has a modest utility profile. The FZLH320 uses a 22 kW main motor; larger continuous loads come from compost ventilation, crushing, screening, conveying and dust extraction rather than the pellet mill itself.

The plant does not operate one oversized odor fan continuously all year. Extraction is divided by zone and follows receiving and active-composting duty, which is more appropriate for a small regional facility and materially reduces power consumption.

About 10–12 employees are sufficient for one finishing shift because the plant uses a shared turner, compact equipment layout and campaign-based powder/granule production. Staffing covers receiving, compost operation, finishing, packing, loader work, maintenance, QC and supervision.

No thermal dryer is assumed to run continuously. Composting and curing remove most water through controlled aeration; the granular product receives low-temperature moisture reduction only when seasonal conditions require it.

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How RICHI Customized This Line for Uruguayan Conditions

The project is tailored to a central-Uruguay customer that needs a commercially credible plant without the capital burden of a much larger export-scale factory. Capacity, buildings and environmental controls are therefore sized to the 10,000 T/A business rather than copied from a 30,000–50,000 T/A manure facility.

1. The 5,000 T/A granular route uses one FZLH320 at 2–3 T/H; a larger FZLH model would spend most of its time under-loaded.
2. The common post-compost crusher and screen are rated at 4–5 T/H, matching the total annual finishing requirement.
3. One mobile/rail compost turner serves the active compost lanes instead of buying one machine for every lane.
4. Raw straw inventory remains mainly with farms and contractors, reducing the plant’s covered storage requirement.
5. Moisture adjustment follows actual batch measurements; the line does not add a predetermined multi-thousand-ton quantity of water.
6. Odor extraction is concentrated on manure receiving and active composting, avoiding excessive ventilation of clean packing and warehouse areas.

The split after primary screening allows the operator to send stabilized compost either to powder bagging or to the manure pellet mill route. Campaign production also makes cleaning and product inventory easier for a small team.

Training focuses on compost temperature and moisture, aeration, crusher and screen settings, FZLH die/roller service, pellet cooling, product sampling and housekeeping. RICHI provides startup guidance and acceptance checks, while local product registration and agronomic claims remain the customer’s responsibility.

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Product Specifications

The factory releases products against its registered Uruguay specification and laboratory analysis. MGAP provides a dedicated framework for organic fertilizers and organo-mineral fertilizers, so the technical sheet, label and analytical evidence must match the registered product rather than a foreign fertilizer standard.

The case does not guarantee one fixed organic-matter percentage, NPK value or pathogen number without product-specific laboratory records. Manure nutrient content changes with livestock diet, bedding, water, composting loss and crop-residue ratio.

The granular product is cylindrical because the project uses ring-die pelleting. Product quality is controlled through diameter, length, moisture, strength and fines rather than a spherical-roundness index.

Pricing is kept outside the technical specification. Bag cost, transport, manure collection, dealer margin and competing fertilizer prices change over time, so current quotations are more useful than a fixed historic price table.

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Market Outlook for Organic Fertilizer in Uruguay

Uruguay has enough livestock and crop activity to support regional organic-fertilizer businesses, but its domestic population and high share of extensive grazing mean that a 10,000 T/A plant should be treated as a meaningful regional project rather than automatically as a large national producer. The business must sell into crop farms, improved pastures, horticulture and dealer channels rather than assuming all cattle manure becomes a commercial fertilizer market.

Official agricultural statistics show the scale of both sides of that market: the country had about 11.45 million cattle in 2024, while the 2024/25 season recorded about 1.46 million tonnes of wheat and 1.17 million tonnes of malting barley. These figures support manure and crop-residue availability without needing an invented annual growth rate for organic fertilizer.

Uruguay also maintains a formal framework for organic production and certification. A registered organic fertilizer may be useful to certified farms, but it still has to be acceptable under the relevant production rules; it does not confer organic status on the crop by itself.

Future expansion should first review regional sales and manure contracts. If the customer later secures significantly more demand, the compact layout can add a second FZLH line or more curing capacity without starting with an oversized site today.

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Why an Organic Fertilizer Line Makes Sense in Uruguay

The project makes sense because central Uruguay combines a large livestock economy with commercial crop production, but the selected scale remains disciplined. A 10,000 T/A plant can source concentrated manure within a practical regional radius and sell through farms, cooperatives and dealers without requiring a national-scale logistics network.

The 4–5 T/H common finishing line and 2–3 T/H FZLH320 granular branch match the annual workload. This keeps power, labor and maintenance under control and avoids buying a large pellet mill that would run only a small part of the year.

For equipment delivery, a practical route is Qingdao to the Port of Montevideo followed by road transport to Durazno. The Port of Montevideo operates a specialized container terminal and continues to handle substantial container traffic, making it the natural entry point for containerized fertilizer-line equipment.

For another organic fertilizer production project, the first design inputs should be manure type, whether it is stackable or slurry, annual dry matter, crop-residue supply, required composting time, powder/granule sales split, product registration target, available site area and regional sales radius. These inputs determine composting area, FZLH model, odor control and storage.

RICHI scope covers process engineering, equipment manufacture, factory inspection, export packing, controls, installation guidance, commissioning and operator training. A practical implementation period for this compact plant is about 5–7 months when the covered compost hall, utilities and equipment manufacture proceed in parallel.