0.8–1.0 T/H Shrimp Feed Micron Grinding Equipment in Ecuador

The Real Problem Was Hidden before Micro-Pelleting

The customer is a specialized aquafeed producer supplying shrimp hatcheries and nursery operators along Ecuador’s Pacific coast. Its product range includes fine crumble, micro-pellet, and specialty hatchery feeds for whiteleg shrimp, Litopenaeus vannamei.

Ecuador is an entirely credible location for this type of project. The country has one of the world’s most developed shrimp industries, and Guayaquil sits at the center of a large aquaculture supply chain serving farms, hatcheries, feed manufacturers, processors, laboratories, and exporters.

The plant already had conventional crushing, batching, mixing, micro-feed forming, drying, screening, and packing equipment. What it lacked was a stable ultrafine grinding step between normal feed grinding and the precision manufacturing stages used for hatchery products.

The existing system could reduce material sufficiently for ordinary juvenile shrimp feed, but not consistently enough for the finest product families.

100–120 Microns Is an Ingredient-Grinding Target, Not the Finished Feed Size

This distinction became central to the final equipment selection.

A hatchery-feed manufacturer may need individual dry ingredients ground extremely fine so they can be mixed uniformly and subsequently formed into very small finished particles. That does not mean every shrimp larva should receive a final feed particle measuring exactly 100–120 μm.

Finished feed size changes with larval and post-larval development, feeding behavior, feed technology, and product design. Research and commercial practices use different particle classes as shrimp progress from protozoea through mysis and post-larval stages.

The SWFL90 therefore prepares the ingredient base. Downstream micro-pelleting, agglomeration, crumbling, screening, or microencapsulation determines the final feed particle supplied to the hatchery.

This process logic is much more realistic than treating a micron grinder as if it alone manufactures ready-to-feed larval diets.

Why the Previous Grinding Route Limited Product Development

The customer had previously used a fine grinder combined with repeated screening and recirculation. The system could produce a relatively fine powder, but particle distribution remained broad.

Some material was already sufficiently fine while another fraction had to be returned several times. This reduced effective throughput and complicated production planning.

For hatchery feed, broad particle distribution can create additional problems downstream. Very coarse particles may not disperse uniformly in a small micro-pellet matrix, while excessive fines can affect bulk behavior and dust generation.

The production team therefore wanted better classification rather than simply more impact energy.

SWFL90 Selected for Controlled Ultrafine Grinding

The supplied SWFL90 micro crusher machine configuration is intended for the ultrafine range and combines high-speed grinding with classification rather than relying only on a fixed screen opening. The project reference data gives approximately 75–180 μm capability, with around 0.8–1.0 T/H considered a more realistic output when the customer operates in the finer 100–120 μm region. 

What Actually Goes through the Micron Grinder

The SWFL90 does not receive the complete shrimp-feed formula exactly as it will later be sold.

The finest grinding duty is focused on selected dry protein and carbohydrate ingredients that benefit from additional particle-size reduction before final mixing.

These can include high-quality fish meal, squid-derived dry ingredients, selected marine protein meals, finely prepared plant proteins, starch-bearing ingredients, and other dry components used in premium hatchery formulations.

Fish oil, lecithin, and other liquid lipids do not pass through the micron grinder. These are introduced later through the formulation and mixing process.

This matters because high surface fat can make ultrafine grinding much more difficult. Oily materials may smear, reduce classifier efficiency, and accumulate inside the grinding system.

Where a marine protein ingredient has unusually high fat content, the customer evaluates it separately rather than assuming the SWFL90 will process every fish-derived material at the same capacity.

Pre-Grinding Makes the SWFL90 More Efficient

The customer does not feed large flakes, whole pellets, or coarse raw ingredients directly into the ultrafine grinder.

Material first passes through conventional size reduction so the SWFL90 receives a reasonably uniform pre-ground feed.

For the finer product campaigns, the customer typically prepares material around the sub-millimeter to roughly 1 mm class before ultrafine grinding.

This reduces the amount of work the classifier-grinding circuit has to perform and helps maintain more stable feed rate.

Pre-grinding condition has a direct effect on SWFL90 capacity. If incoming material becomes substantially coarser, the same classifier setting will normally reduce throughput.

Classification Is More Important Than One Exact RPM

One reason the customer selected the SWFL design was the ability to control particle separation through an air-classification stage.

Material sufficiently fine to meet the selected cut point leaves the grinding circuit with the airflow, while oversized particles remain in circulation for further grinding.

This creates a narrower distribution than repeatedly passing an uncontrolled product through a conventional hammer mill.

The classifier speed can be changed according to the required fineness, but the plant does not use one permanent number such as 3,100 rpm for every formulation.

Classifier speed, airflow, feed rate, material density, moisture, fat content, and grinding condition work together. A setting that produces the desired result with fish meal may not create the same distribution with a different protein ingredient.

The Plant Measures Particle Size Instead of Guessing from a Screen

At micron scale, conventional visual inspection is not sufficient.

The quality-control team therefore verifies particle-size distribution using suitable laboratory methods rather than assuming that a particular classifier setting automatically equals a specific micron value.

This is especially important around the 100–150 μm range.

The customer is interested not only in the average particle size but also in how much coarse material remains and how wide the distribution is.

A batch with an average near 120 μm can still be unsuitable if it contains an excessive tail of much larger particles.

Why Ecuadorian Shrimp Feed Makes This Investment Plausible

The equipment scale also needs to fit the local industry.

A small hatchery producing feed only for its own tanks would not normally justify a 90 kW industrial micron grinder. The SWFL90 makes much more sense for a specialist feed manufacturer supplying multiple hatcheries and nursery customers.

That is the customer profile used in this project.

Ecuador’s commercial shrimp sector is large enough to support specialized upstream suppliers, and the Guayaquil area provides access to imported marine proteins, premixes, oils, packaging, laboratory services, and port logistics.

The customer can therefore run the micron grinder in concentrated production campaigns for several hatchery-feed SKUs rather than operating continuously on one product.

Fine Grinding Does Not Automatically Increase Shrimp Survival

The customer markets feed quality carefully.

Appropriate feed size and ingredient fineness matter in hatchery nutrition, but larval survival cannot be attributed to a grinder alone.

Survival depends on broodstock quality, water chemistry, pathogen control, stocking density, live-feed management, feeding rate, nutrient balance, digestibility, feed stability, tank hygiene, and many other hatchery conditions.

The SWFL90 can improve control over one manufacturing variable: particle size of selected feed ingredients.

That can support more uniform downstream feed manufacture, but it would be technically inappropriate to claim that switching from one grinder to another automatically raises PL survival by 10% or 20%.

The Finished Hatchery Feed Is Created Downstream

After ultrafine grinding, the micronized ingredients enter the controlled batching and mixing section.

Other nutritional ingredients are added according to the product formula. Liquids such as fish oil and lecithin are incorporated through suitable mixing or coating stages rather than being micron-ground.

The blended feed is then processed into the required physical form.

Depending on the product family, that may mean very small agglomerates, micro-pellets, crumble fractions, or encapsulated feed particles. Screening and classification afterward produce the size classes required for different hatchery stages.

This is where the actual feeding particle is defined.

Dust Management Became More Important after Going Finer

Micron grinding increases the specific surface area of the powder and creates much more airborne fine material than ordinary feed grinding.

The Ecuadorian plant therefore treats airflow, cyclone separation, filtration, sealing, and housekeeping as part of the equipment package rather than optional accessories.

This has both product-recovery and worker-environment benefits.

Fine marine-protein powders are valuable ingredients. Losing them into the production room is a direct raw-material loss as well as a sanitation problem.

The system also needs to prevent condensation and buildup inside the air circuit, particularly when operating with ingredients that contain more residual fat.

Wear Is Monitored by Product, Not by Calendar

Ultrafine grinding is demanding on wear components.

The customer keeps spare grinding parts and monitors condition according to actual operating hours and material processed.

However, the plant does not assume that hammers must be changed after exactly 400 or 500 hours.

Mineral contamination, ingredient hardness, classifier setting, feed rate, and target fineness all affect wear.

Gradual loss of grinding efficiency can often be seen through rising power consumption, falling throughput, or a change in particle-size distribution before a component reaches its mechanical wear limit.

A Different Production Schedule from Ordinary Shrimp Feed

The micron grinder is not required for every tonne of feed the factory produces.

Standard juvenile and grow-out shrimp feeds can use a coarser grinding specification, while the SWFL90 is reserved for finer hatchery and specialty products.

This means the customer schedules the machine by product family.

One campaign may process fine marine protein ingredients for post-larval microfeed; another may use a slightly coarser cutoff for a nursery formula.

This approach gives the plant much better utilization than sizing the SWFL90 against total annual aquafeed tonnage.

Shipping into Guayaquil Fit the Project Naturally

The SWFL90 was exported from Qingdao Port in China and delivered through Guayaquil.

For a customer located in Ecuador’s main shrimp-industry and commercial corridor, this route is practical. Guayaquil is the country’s principal maritime trade gateway, while Contecon’s terminal handles containerized cargo, general cargo, heavy machinery, and project cargo.

The equipment package included the grinding unit, classifier-related components, feeder, air-separation equipment, specified wear parts, electrical documentation, and Spanish-language operating information.

Final sailing time and customs duration were confirmed from the actual shipping schedule rather than built into the case as permanent fixed numbers.

What Changed after Commissioning

The customer’s main gain was not a dramatic headline such as “2.5 times more survival.”

The real improvement was process control.

Instead of repeatedly regrinding batches and relying heavily on downstream screening to remove coarse material, the plant can now establish a repeatable ultrafine grinding condition for each principal ingredient family.

That makes mixing and microfeed forming more predictable and reduces the number of corrective passes through the grinding section.

“Before, we spent too much time trying to correct particle size after grinding. Now we work from a defined micron specification before the material reaches the microfeed section. That has made formulation runs easier to repeat, especially when we change between marine protein ingredients with different densities and fat levels.”

The Specification Buyers Should Send before Choosing a Micron Grinder

For this type of shrimp-feed project, asking only for “100 micron powder” is not enough.

RICHI needs to know what material is being ground, its initial particle size, moisture, fat content, required particle distribution, desired kilograms per hour, downstream feed process, and how the customer will verify final fineness.

A buyer should also clarify whether 100–120 μm refers to an ingredient specification or the final feed particle. Those are completely different engineering requirements.

If the desired final hatchery-feed particle is 300, 500, or 800 μm, the ingredients may still need to be ground much finer before the finished microfeed is formed.

Shrimp Feed Micron Grinding Equipment in Ecuador for Precision Hatchery Feed Production

This shrimp feed micron grinding equipment in Ecuador project is a precision raw-material preparation application rather than a generic feed-mill grinding case.

The Guayaquil manufacturer uses one SWFL90 to reduce selected dry aquafeed ingredients into a controlled ultrafine range before micro-pelleting, agglomeration, or other hatchery-feed forming processes. The project working range is mainly around 100–150 μm for selected ingredients, while final feed size is subsequently produced and classified according to the target shrimp stage.

The SWFL90 reference configuration supports approximately 75–180 μm grinding under suitable conditions, with the finer 100–120 μm region requiring lower practical throughput than standard fine grinding.

For another Ecuadorian hatchery-feed project, RICHI Machinery would first evaluate ingredient type, incoming particle size, fat level, moisture, target micron distribution, hourly output, laboratory particle-size testing method, downstream microfeed process, dust-control requirements, available electrical supply, and factory layout before confirming the final grinder and classifier configuration.

That makes the equipment investment useful for the real manufacturing problem: preparing a repeatable fine ingredient base for specialized shrimp feed, rather than using an impressive micron number as a substitute for complete hatchery-feed engineering.