By Binbin Zhao

In the world of animal feed production, pelleting stands out as a breakthrough process that yields many  benefits, ranging from improved digestibility and reduced waste to enhanced handling characteristics. 

By transforming loose, disparate feed ingredients into dense, uniform pellets, this compression and molding process ensures that every bite an animal takes is loaded with the exact balance of nutrients they need. This technological marvel has not just elevated the standard of animal nutrition but also has boosted farm productivity to unprecedented levels.

But the advantages of pelleting extend far beyond basic nutrition. By reducing feed dust, the process minimizes respiratory issues in animals, creating a healthier environment for both livestock and the people who work with them. The consistent uniformity of pellets brings precision to feeding programs, making it easier to meet specific nutritional requirements consistently and reliably.

Moreover, the physical properties of pelleted feed offer logistical benefits that are hard to ignore. Because pelleted feed takes up less volume and is easier to handle, transporting it becomes more straightforward and cost-effective. This translates to significant reductions in operational costs for farmers and feed producers.

The synergy of these benefits — improved nutrition, safer working conditions, precise feeding, and efficient logistics — solidifies pelleting’s role as an indispensable technique in modern agriculture. Far from being just another process, pelleting represents a cornerstone of contemporary farming practices, driving both innovation and efficiency in the quest for better animal health and farm productivity. In this landscape, pelleting isn’t just a process; it’s a game-changer, setting new standards and opening fresh possibilities for the future of agriculture.

Mastering pelleting challenges

Despite its many benefits, the pelleting process presents several significant challenges that manufacturers must carefully manage to maintain efficiency and profitability. Key among these challenges are issues related to maintenance and downtime, energy consumption, and the quality of raw materials.

The equipment involved in pelleting, such as pellet mills, conditioners and coolers, endure substantial mechanical stress. Routine maintenance is vital to prevent unexpected breakdowns, which can lead to significant downtime, affecting both productivity and profitability. The costs associated with downtime can be considerable, encompassing lost production time and potential delays in delivery schedules. Moreover, unexpected failures may necessitate expedited shipping for replacement parts and emergency repair services. Ensuring that parts like rollers, dies, and bearings are regularly inspected and replaced can extend the lifespan of the machinery, ensuring continuous operation and ultimately saving costs and minimizing interruptions.

Machine robustness plays a crucial role in minimizing downtime. High-quality components and robustly designed machines are better equipped to withstand the stresses of continuous operation, reducing both the frequency and impact of breakdowns. By investing in durable equipment, manufacturers can extend the intervals between maintenance, significantly enhancing overall system reliability and efficiency.

Pelleting is undeniably an energy-intensive process. From grinding raw materials to the actual pelleting and cooling stages, substantial amounts of energy are consumed. The inclusion of steam in conditioning the feed further increases energy demands. With energy costs fluctuating regularly, controlling these expenses becomes crucial for maintaining profitability. It’s vital for manufacturers to adopt energy-efficient technologies and practices to mitigate these costs. Strategies such as optimizing energy use during peak and off-peak hours and implementing more efficient machinery can make a significant difference.

The quality of raw materials is another factor that heavily influences the efficiency and quality of the pelleting process. Variability in moisture content, particle size, and ingredient composition can complicate the process, potentially leading to inconsistent pellet quality or increased wear on machinery. To address these issues, digital solutions offer real-time monitoring and analysis of raw material characteristics, ensuring consistency and optimal performance. Leveraging data analytics, these digital services can predict variations in raw material quality and automatically adjust process parameters to maintain high standards of feed quality. This not only improves the longevity of the equipment but also ensures that the final product consistently meets the required nutritional standards.

In summary, while pelleting offers significant advantages, it also presents its own set of challenges that require careful and continuous management. By focusing on robust maintenance practices, investing in durable machinery, adopting energy-efficient technologies, and leveraging advanced digital solutions to monitor and adjust for raw material variability, manufacturers can navigate these challenges effectively. This comprehensive approach will help them capitalize on the myriad benefits pelleting offers, enhancing productivity, profitability, and sustainability in the process.

Innovating feed production

Bühler has developed a state-of-the-art pelleting system to address the complex challenges in animal feed production. This comprehensive solution includes advanced pellet mills, optimized conditioning systems, cutting-edge digital solutions, and global service support. The pellet mills are designed for high efficiency, durability, and easy maintenance, featuring adaptive roller and die gap adjustment, efficient energy consumption, and robust construction materials. 

The Kubex 5 Series pellet mill is designed to redefine productivity and performance in feed production, the company said. It features a robust gear drive system for enhanced reliability and efficiency and complements Bühler’s existing pellet mills family that utilizes belt drive systems. The new pellet mill is built for continuous production with minimal maintenance, with rich and standard features to ensure consistent pellet quality and convenient operation. Bühler said this ensures exceptional performance with minimal downtime and flexible production.

The machine offers energy efficiency, exceptional mechanical features, and a user-friendly interface, setting new standards in maintenance ease and operational reliability, the company noted. It integrates seamlessly with Bühler’s digital platforms for real-time data monitoring and process optimization, meeting the evolving demands of the industry. 

Optimal conditioning plays a vital role in a high-quality pelleting process. Bühler’s systems pre-treat feed materials with steam and moisture, which enhances pellet durability, digestibility and nutrient absorption. Besides, with electrical surface heating and hot-start technology, it is much easier to achieve fast start-up and will significantly reduce waste. The integration of digital technologies allows for real-time monitoring and automation. Manufacturers can track every aspect of the process — from raw material intake to the finished product — optimizing settings, predicting maintenance needs, and reducing energy consumption, thus improving operational efficiency and cost management. Digital services, particularly PelletingPro, offer manufacturers advanced analytics and detailed insights, enhancing decision-making, profitability, consistent product quality and operational efficiency.

Bühler supports its advanced systems with a global service network, complete with strategically located service stations. This network provides expert assistance, replacement parts, and technical support, ensuring minimal downtime and smooth production. 

As animal feed production evolves, the need for robust and innovative solutions to overcome inherent challenges has become more critical. By prioritizing advancements in machinery, energy efficiency, and digital monitoring, the industry can not only enhance productivity but also ensure sustainability and profitability. Addressing these complexities with a comprehensive approach is key to driving the future of animal nutrition and feed production, setting a new benchmark for what is possible in modern agriculture.

Binbin Zhao is a product manager with Bühler, an expert in animal feed production. He can be reached at binbin.zhao@buhlergroup.com.