Effects of Wet Soybean Dregs on Forming Relaxation Ratio, Maximum Compressive Force and Specific Energy Consumption of Corn Stover Pellets
2025
Tianyou Chen | Wenyu Zhang | Yuqiu Song | Yanlin Wang
This study aims to explore the influence mechanism of wet fermented soybean dregs on corn stover formation, improve the forming quality of straws and reduce the power demand and specific energy consumption of forming equipment. This study takes 2 mm and 4 mm corn stover sizes as the objects and explores the influence of different amounts of fermented soybean dregs on the volume relaxation ratio, maximum compressive force and specific energy consumption of straw forming pellets under compression displacements of 90 mm and 92 mm. Different amounts of water are selected according to the total moisture content of the mixed feed, and the effects of adding water and fermented wet soybean dregs on feed forming are compared and studied. The results indicate that, under certain conditions, adding water or wet fermented soybean dregs to straw is beneficial for shaping. Adding wet fermented soybean dregs to straw can improve the nutritional value of feed and promote the utilization of agricultural waste. Therefore, adding wet fermented soybean dregs is an effective method for processing high-quality feed pellets. Taking into account the quality and specific energy consumption of mixed feed processing, the optimal pelleting process for corn stover and wet fermented soybean dregs in a mixed feed is as follows: straw particle size of 4 mm, added mass ratio of wet fermented soybean dregs of 5% and compression displacement of 92 mm. These results support the research and development of technology and devices for high-quality and low-energy mixed formation using fermented soybean dregs and straw, and they offer a new route for the utilization of other high-moisture feeds.
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