Pellet separators are devices used to sort and classify pellets based on size and quality. They work by utilizing vibrating screens or rotating sieves to filter out pellets that meet specific criteria, such as size or density. In applications like animal feed or industrial processes, pellet separators help ensure uniformity and consistency in the product by removing oversized or undersized pellets. This sorting process improves the efficiency and quality of the final product, making pellet separators crucial for maintaining high standards in production and processing environments.