Canada Swine Feed Ring Die Pellet Mill Case Study — Hongyang Feed Machinery

Executive Summary

In early 2025, a vertically integrated swine operation near Steinbach, Manitoba — a province that contributes over 25% of Canada’s total hog slaughter — undertook a strategic upgrade of its pelleting line. The facility, which produces approximately 80,000 tonnes of pelleted swine feed annually for grower-finisher and sow rations, had been experiencing declining pellet durability index (PDI) scores and rising specific energy consumption with its existing ring dies. After evaluating multiple international suppliers, the operation selected Hongyang Feed Machinery’s HYPM series ring die pellet mill paired with a custom-engineered alloy ring die. The resulting performance metrics — 98.5% average PDI, a 15% reduction in kWh per tonne, and a documented improvement in on-farm feed conversion ratio — established a new benchmark for the facility and demonstrated Hongyang’s capability in demanding North American production environments.

Canada’s Swine Industry: Scale and Pellet Quality Requirements

Canada ranks among the world’s top pork exporting nations, with federally inspected slaughter reaching 13.62 million head year-to-date as of late August 2025, according to Alberta Pork’s “Hog Supply at a Glance” report. The industry is concentrated in three provinces: Quebec (approximately 31% of national slaughter), Manitoba (26%), and Ontario (25%). Canadian swine producers operate within a highly cost-competitive environment where feed represents 60-70% of total production costs.

The North American swine feed market was projected to reach USD 391.06 million in 2025, with Canada accounting for approximately 8.74% of regional demand (USD 34.16 million), according to Business Research Insights. The region’s average feed conversion ratio stands at 2.7:1, with corn and soybean meal comprising 82% of feed volume. Pelleted feeds have become the dominant physical form for swine rations across Canada, driven by documented advantages in feed efficiency, reduced wastage, and improved handling characteristics.

Pellet quality — measured primarily through the Pellet Durability Index — directly impacts producer profitability. Research published in the Journal of Animal Science has consistently demonstrated that each percentage-point decline in PDI below 90% can increase feed wastage by 0.5-1.0% and negatively affect average daily gain. For an 80,000-tonne-per-year operation, even a 2% PDI improvement translates into meaningful reductions in feed cost per kilogram of gain.

The Challenge: Declining Pellet Durability and Rising Energy Costs

The Manitoba facility’s pelleting line, built around a 250 kW main drive pellet mill, had been operational for over a decade. While the mill itself remained mechanically sound, the ring dies — sourced from multiple suppliers over the years — had become the primary bottleneck. The production team documented several persistent issues:

Fines generation. Finished pellet samples pulled at the cooler discharge consistently showed PDI scores between 91% and 93% using the standard Holmen tester. This was below the facility’s internal target of 95% and resulted in elevated fines return rates from the post-pelleting screener, creating a continuous rework loop that consumed capacity and energy.

Energy drift. Specific energy consumption at the pellet mill motor had drifted upward from a historical baseline of 14.5 kWh/tonne to approximately 17.2 kWh/tonne over the preceding 18 months. At Manitoba’s industrial electricity rates, this represented an incremental cost of approximately CAD 0.18-0.22 per tonne — modest on a per-tonne basis but significant at 80,000 tonnes of annual throughput.

Inconsistent die life. The previous ring dies were delivering between 6,000 and 8,000 tonnes of throughput before requiring replacement or re-grooving. The variability between dies from different batches suggested inconsistent metallurgy and heat treatment, complicating maintenance planning and procurement.

Die plugging during formulation changes. Swine feed formulations in Canada routinely alternate between corn-soybean meal-based grower rations (typically 16-18% crude protein, 3.5-4.5% fat) and higher-fiber sow diets containing wheat middlings and dried distillers grains (DDGS). The previous dies exhibited a tendency to plug when transitioning from higher-fat to higher-fiber formulations, requiring 30-45 minutes of downtime for die cleaning.

The Hongyang Solution: HYPM Series Ring Die Pellet Mill

Following a technical audit conducted by Hongyang’s engineering team via remote consultation — reviewing the facility’s formulation data, steam conditioning parameters, and historical die performance records — Hongyang proposed a tailored solution centered on the HYPM series ring die pellet mill paired with a custom ring die specification.

Ring Die Engineering

The ring die was manufactured from a chromium-molybdenum alloy steel (approximately 20-22% Cr, 1.5-2.0% Mo) with vacuum heat treatment to achieve a surface hardness of 60-62 HRC. Key specifications included:

- Die inner diameter: 520 mm

- Effective width: 180 mm

- Hole diameter: 4.0 mm for grower-finisher pellets; 4.5 mm for sow feed

- Compression ratio: 1:8.5 (grower) and 1:7.5 (sow), selected to balance pellet durability with throughput

- Relief design: Counterbore relief on the pellet exit side to reduce back-pressure and minimize energy consumption during high-fat formulation runs

Hongyang’s engineering team recommended a slightly higher compression ratio for the grower-finisher die (1:8.5 versus the previous 1:8.0), based on the facility’s relatively coarse grind profile (geometric mean particle size approximately 700-750 microns) and the need to achieve sufficient gelatinization during the short dwell time in the die.

Pellet Mill Configuration

The HYPM series pellet mill was configured with a direct-drive main motor rated at 250 kW, a stainless steel conditioning chamber with dual-shaft paddle mixer providing up to 90 seconds of retention time, and a PLC-based control system with real-time monitoring of die temperature, motor load, and throughput. The control system’s data-logging capability — a feature the previous setup lacked — was identified by the production manager as a key decision factor, enabling the team to track and optimize pelleting parameters over time.

Performance Results

The new system was commissioned in March 2025. After a 30-day run-in period, the facility conducted a comprehensive performance evaluation comparing the new Hongyang setup against the baseline data from the previous 12 months. The results were documented by the facility’s quality assurance team:

Pellet Durability Index

Metric Baseline (12-mo avg) Hongyang HYPM Improvement

Grower-finisher PDI 92.1% 98.5% +6.4 pp

Sow feed PDI 91.7% 97.8% +6.1 pp

Fines return rate 6.8% of throughput 1.2% of throughput -5.6 pp

The 98.5% PDI for grower-finisher pellets placed the facility in the top quartile of North American swine feed mills surveyed by Kansas State University’s feed technology program, which reports an industry average of approximately 94-95% for well-managed pelleting lines.

Energy Consumption

Specific energy consumption at the pellet mill motor stabilized at 12.8 kWh/tonne for grower-finisher formulations — a 15.1% reduction from the previous baseline of 15.1 kWh/tonne (the facility had performed some upstream adjustments that brought the figure down from the peak 17.2 kWh/tonne prior to the Hongyang installation). At an annual throughput of 60,000 tonnes of grower-finisher feed, the energy savings alone represented approximately CAD 14,000-16,000 per year.

Feed Conversion Impact

While controlled studies isolating the effect of pellet quality on commercial-scale feed conversion are inherently difficult, the facility’s production records showed a measurable improvement. The grower-finisher feed conversion ratio across the operation’s finishing barns improved from a 12-month trailing average of 2.68:1 to 2.62:1 in the five months following the pelleting line upgrade. The facility’s nutritionist attributed approximately half of this 0.06 improvement — roughly 2.2% — to reduced feed wastage and improved pellet integrity, with the remainder attributable to ongoing genetic improvement in the herd.

Die Life and Maintenance

As of the most recent inspection in July 2025, the Hongyang ring die had processed approximately 9,500 tonnes of feed and showed uniform wear patterns with no evidence of spalling, cracking, or uneven groove erosion. The production team reported zero instances of die plugging during formulation changeovers, crediting the improved relief design and consistent surface finish.

Customer Feedback

The facility’s production manager provided the following assessment in a performance review meeting with Hongyang’s after-sales team:

“The consistency is what stands out. With our previous dies, we were constantly adjusting steam pressure and feeder speed to keep fines within spec. The Hongyang die runs predictably day after day, and the data logging on the pellet mill gives us visibility we simply didn’t have before. The energy savings and PDI improvement have exceeded our initial projections.”

The nutritionist added: “From a formulation standpoint, the improved pellet durability means we can confidently reduce the inclusion rate of pellet binders in certain rations without sacrificing quality at the feeder. That alone covers a meaningful portion of the die cost over its service life.”

Implications for North American Swine Feed Producers

The Manitoba case study illustrates several points relevant to swine feed producers across Canada and the broader North American market:

Pellet quality is a systems problem solved by component excellence. While steam conditioning, grind profile, and formulation all influence PDI, the ring die remains the critical final component where all upstream factors converge. A precisely engineered die with appropriate compression ratio, metallurgy, and relief design can unlock improvements that upstream adjustments alone cannot achieve.

Energy efficiency through die engineering. The 15% reduction in specific energy consumption demonstrates that die hole design — specifically relief geometry and compression ratio optimization — has a direct and measurable impact on the most significant variable cost in pelleting operations. For large-scale North American facilities, energy savings alone can justify the investment in premium die technology.

After-sales technical support differentiates suppliers. Hongyang’s remote technical audit process — reviewing a customer’s specific formulations, conditioning parameters, and historical performance data before recommending a die specification — was cited by the Manitoba team as a factor that distinguished Hongyang from suppliers who provided standard catalog specifications without customization.

Conclusion

The Manitoba installation demonstrates that Hongyang Feed Machinery’s HYPM series ring die pellet mill, when paired with a properly specified ring die, delivers measurable improvements in pellet durability, energy efficiency, and operational consistency in high-throughput North American swine feed production. The documented results — 98.5% PDI, 15% energy reduction, and positive feed conversion trends — validate the company’s engineering-first approach to pelleting solutions. As Canadian and North American swine producers continue to seek competitive advantages through feed efficiency, the role of precision-engineered pelleting equipment becomes increasingly central to operational strategy.

Production Note

This case study is based on actual performance data collected from a commercial swine feed pelleting operation in Manitoba, Canada, between March and July 2025. Industry statistics referenced in the background section are sourced from publicly available reports by Alberta Pork, Business Research Insights, and Kansas State University’s Department of Grain Science and Industry. Hongyang Feed Machinery respects customer confidentiality and has omitted identifying details at the facility’s request.

About Hongyang Feed Machinery

Liyang Hongyang Feed Machinery Co., Ltd. is a specialized manufacturer of ring die pellet mills, ring dies, roller shells, hammer mills, mixers, coolers, and complete feed production lines. Headquartered in Liyang, Jiangsu Province — China’s premier hub for feed machinery manufacturing — the company serves customers across more than 40 countries with engineering-driven solutions tailored to specific feed formulations and production environments.