This method enhances the material’s absorption of fats/oils, allowing them to penetrate more easily into the feed pellets. If fats/oils only adhere to the pellet surface, they may gradually seep into the packaging bags during slightly longer storage periods. This not only compromises the bags’ appearance but also leads to nutrient loss in the feed.
In the post-processing stages after the extruder, particularly in the dryer, it is almost impossible to completely prevent the accidental detachment of equipment parts such as bolts. In some cases, even broken extruder blades may mix into the finished feed. Although a grading sieve is typically installed after the dryer, it may not effectively remove these occasional metal contaminants—especially when large-aperture screens are used for producing large-diameter feed. Therefore, installing a permanent magnetic drum before the finished product bin is still essential to ensure product safety and quality.
The extruder is the core equipment in the production of extruded feed. Its operational status directly affects both upstream and downstream processes. Therefore, close coordination between the extruder and the control room operators is essential to ensure smooth production and reduce energy consumption.