1000 KG Feed Mixer Machine for Consistent Feed Output Quality in Poland

Before upgrading, the farm relied on a 20-year-old Polish-made ribbon mixer that had worn bearings and a badly bent ribbon. The discharge gate no longer sealed properly, allowing fines to leak out during mixing.

The nutritionist estimated that feed waste alone cost the operation about 180,000 złoty (approximately $45,000 USD) per year, not including the performance losses from inconsistent nutrition.

The farm manager had been quoted by a German manufacturer for a replacement twin-shaft mixer, but the price—over €45,000—was too high for the farm's current budget. A feed industry consultant recommended RICHI as a reliable and cost-effective alternative.

The farm already had a hammer mill for grinding cereals and a micro-dosing system for vitamins and minerals. They also had a liquid addition system for molasses and fat. What they lacked was a robust mixer that could produce a uniform mash with minimal segregation.

They needed a machine that could handle the wide range of particle sizes in their diet—ground barley (2.5mm), ground wheat (2.0mm), soybean meal (2.5mm), rapeseed meal (3.0mm), and coarse bran (4.0mm)—without allowing the heavier particles to settle.

After analyzing their feed samples at our Qingdao testing facility, we recommended the SLHY2.5L ribbon mixer with an 18.5kW motor and a batch capacity of 1,000 kg (pneumatic discharge).

This model uses a double-helix ribbon design that creates two opposing material flows, effectively homogenizing mixtures with wide particle size distributions. The farm purchased one unit as a direct replacement for their old mixer, not as part of a larger system.

Why Mixing Consistency Directly Affects Pig Performance

Pigs are less selective than poultry, but they still exhibit feed sorting when presented with a heterogeneous mix. More importantly, inconsistent mixing leads to batch-to-batch variation in nutrient density.

The farm nutritionist conducted a feed sampling study and found that crude protein levels in finished feed varied by as much as 2.5 percentage points between batches from the old mixer—a range that violates EU feed labeling regulations. The health consequences included uneven growth, increased medication costs, and higher mortality in the grower barns.

The SLHY series mixers use a specially designed double-helix ribbon. The outer ribbon moves material in one direction while the inner ribbon moves material in the opposite direction, creating a fluidized mixing zone that keeps particles of different densities suspended.

The farm's quality control team tested the first 100 batches from the new mixer and found a CV of 4.2% on average, well below the 7% industry standard for swine feed and consistent enough to meet EU regulatory requirements for complete feeds.

Machine Selection and Mixing Parameters for Swine Rations

The farm selected the SLHY2.5L from our SLHY series of ribbon mixers. The "L" designation indicates a larger effective volume (2.5 cubic meters) for the rated batch size, which allows for gentle mixing and reduced particle degradation.

The 18.5kW motor is gear-driven and operates at a relatively low ribbon speed (28 rpm), which minimizes the breakdown of friable particles like soybean meal. The mixer is equipped with a pneumatic drop-bottom discharge that opens fully in under five seconds.

The mixing parameters that gave the best results were:

• Mixing time per batch: 4 minutes (reduced after optimizing the loading sequence)
• Loading sequence: Half of the base grain (barley and wheat) first, then the protein meals, then the remaining grain, then the fat and molasses sprayed over the top during the last 60 seconds, and finally the mineral premix on top
• Filling level: 85% of the effective volume (2.1 cubic meters of material). Overfilling reduced mixing efficiency significantly.
• Discharge: Pneumatic gate opens after mixing completes, feeding into a bucket elevator that delivers the finished mash to the finisher barn silos

One challenge they encountered was the addition of molasses at 3% inclusion. When added too quickly, the molasses would form sticky balls with the ground grain. The solution was to install a heated molasses tank (keeping it at 35°C) and a set of three finer spray nozzles that distribute the liquid evenly across the bed of moving material. After this adjustment, the molasses was uniformly distributed without clumping.

What the Mixed Feed Is Used For

The farm produces three distinct rations for different stages of production:

Sow lactation ration (for farrowing sows):

• 35% ground barley and wheat
• 20% soybean meal
• 15% wheat bran
• 12% rapeseed meal
• 8% molasses
• 5% vegetable fat
• 5% minerals and vitamins

Finisher ration (for pigs 50-110 kg):

• 45% ground barley and wheat
• 15% soybean meal
• 12% rapeseed meal
• 10% wheat bran
• 8% peas
• 4% molasses
• 3% vegetable fat
• 3% minerals and vitamins

Grower ration (for pigs 25-50 kg):

• 40% ground barley and wheat (60:40 ratio)
• 18% soybean meal (46% protein)
• 12% rapeseed meal (local, lower cost than soybean)
• 10% wheat bran
• 8% peas (homegrown)
• 5% molasses
• 4% vegetable fat
• 3% minerals, vitamins, and additives

The farm manager reported that the new mixer reduced batch-to-batch variation dramatically. Before, samples taken from different silos receiving the same formula showed crude protein differences of up to 2.5 percentage points.

After installing the SLHY2.5L mixer machine, the variation dropped to under 0.5 percentage points. This consistency allowed the nutritionist to lower the safety margin on protein inclusion, saving about 90,000 złoty ($22,000 USD) per year in ingredient costs.

Finisher pig growth rates increased from 780 g per day to 850 g per day – a 9% improvement – which the manager attributes primarily to more consistent energy intake across the herd. Days to finish (from 30 kg to 110 kg) dropped by 12 days on average, significantly reducing the farm's cost of production.

Why the Farm Chose the SLHY Series Over Competitors

The farm manager evaluated three options before selecting RICHI:

• A German ribbon mixer: €32,000 ($35,000 USD), 12-week lead time
• A Polish-made ribbon mixer: 180,000 złoty (about $45,000 USD), 8-week lead time, but with a smaller motor and lighter construction
• RICHI SLHY2.5L: 78,000 złoty ($19,500 USD) delivered, 8-week lead time, full 12-month warranty, and a comprehensive spare parts kit included

Beyond price, the deciding factor was the pre-sale material testing. RICHI engineers replicated the farm's exact grower ration in Qingdao, measured the mixing uniformity coefficient (CV of 3.9% after 4 minutes), and sent them a video of the mixing process. Seeing their own ingredients being mixed to a uniform consistency built the trust that no brochure could provide.

Customer Feedback After 16 Months of Operation

We spoke with the farm manager about 16 months after installation. Here is what he told us:

"This feed mixer machine for consistent feed output quality has transformed our operation. Our old mixer was producing inconsistent batches that frustrated our nutritionist and worried our veterinarians.

The SLHY2.5L gives us the same result batch after batch, day after day. The pigs are growing faster and more uniformly. We have reduced the variation in slaughter weights significantly, which means more pigs falling into the premium price category.

The only maintenance we have performed is lubricating the bearings every 200 hours and tightening the chain drive once. The ribbon shows minimal wear after 5,000 batches. The pneumatic discharge gate has been trouble-free."

The farm has since recommended the SLHY series to two other pig operations in the Wielkopolska region, and one has purchased an SLHY3.5L for a 1-million-bird poultry operation.

Other Applications of the SLHY Mixer in Central Europe

The SLHY ribbon mixer is highly versatile beyond swine feed. In Poland, a major grain and meat producer, these mixers are also used for:

• Poultry feed production: Mixing ground maize, wheat, soybean meal, and premixes for broilers and layers
• Cattle feed premixing: Creating custom mineral and vitamin blends for dairy herds
• Organic fertilizer production: Blending composted manure with lime and other minerals
• Grain blending: Mixing different cereal grains to achieve specific nutritional profiles for on-farm feed mills

The farm manager noted that they have also used the mixer to blend mycotoxin binders into contaminated grain during wet harvest years – a common problem in Poland. The ribbon action ensures the binder is evenly distributed throughout the grain.

Logistics: Shipping from Qingdao to Gdańsk

The SLHY2.5L was shipped from Qingdao to the Port of Gdańsk on the Baltic Sea – about 32 days at sea. Gdańsk is Poland's largest seaport and the main gateway for agricultural imports. From Gdańsk, the customer arranged truck transport to Poznań, approximately 300 kilometers south. The total transit time was about 42 days.

The mixer was shipped in a 20-foot high-cube container, partially disassembled (the ribbon was removed for shipping). The customer's team reassembled the ribbon and connected the motor using our detailed video guide, completing the installation in less than a day.

Pre-Sale Services We Provided

Before the farm placed their order, we offered:

• Ingredient flowability testing: We analyzed their ground barley, wheat, soybean meal, rapeseed meal, and bran to determine the optimal filling level and mixing time
• Molasses addition simulation: We tested different spray nozzle configurations to find the one that did not create clumps
• Particle size degradation study: We measured the particle size distribution before and after mixing to confirm that the ribbon design did not over-grind friable ingredients
• Control system customization: We programmed the PLC to automatically log the number of batches produced each day, which the farm uses for inventory control
• Operator training video in Polish: We had the video professionally translated and narrated in Polish, which the farm manager said was very helpful for training new employees

The farm manager later told us that the molasses addition simulation saved them weeks of trial-and-error adjustments because they could see exactly which nozzle configuration worked best before the machine arrived.

Plans for a Second Mixer

The farm is now planning to purchase a second mixer – an SLHY3A paddle mixer with a 1,500 kg batch capacity – to separate their sow lactation feed from the grower-finisher feed. Lactation feed is more nutrient-dense and contains higher levels of fat and molasses, which can leave residues in the mixer.

Having dedicated mixers prevents cross-contamination between diets and eliminates the need for a clean-out batch between formula changes. The farm manager estimates that the time savings from having dedicated mixers will allow them to produce an additional 15 tons of feed per day without adding labor.

Across Poland and Central Europe, a feed mixer machine for consistent feed output quality is no longer optional for large-scale livestock operations. With feed representing 65-75% of the cost of production, any improvement in mixing uniformity directly improves profitability.

RICHI Machinery supplies the full range of SLHY ribbon mixers, SLHJ single-shaft paddle mixers, and SLHSJ twin-shaft paddle mixers to livestock operations throughout Europe and beyond. For more information or to schedule a material test at our Qingdao facility, contact RICHI Machinery today.