Optimal pellets cannot be produced using single machines or systems alone, but only on the basis of a seamlessly matched process chain – from cleaning and grinding to mixing, conditioning, pelleting, and cooling. Proper pellet cooling is one of the key elements to achieve this.
Integral pelleting processes require individual system components that can be fully integrated in the overall production process. According to Stefan Hoh, Product Manager Feed at Bühler: "Efficient cooling of the still hot pellets is a process step that should not be neglected if high-quality end products are to be obtained. Proper cooling of feed pellets in the pelleting process chain means very much more than just to reduce the pellet temperature. Cutting costs, by means of energy efficiency is also important".
Stefan Hoh explains that a new cooler*, developed by Bühler has a positive impact on feed producers' margins, due to the efficient use of energy. "Feed manufacturers can stretch the moisture content of their end product to the legally allowed limits and reduce their raw material consumption. This uniform cooling action enables the moisture content variance to be reduced to about half the value of conventional coolers, allowing margins to be perceptibly increased yet again," Hoh says.
Energy reduction is also achieved because the cooler needs much smaller fans. "This cuts energy consumption in comparison to other countercurrent cooler designs by as much as 10%," explains Hoh.
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