Drum screening machine equipment is a type of fertilizer screening equipment used to separate fertilizer granules according to their size. It consists of a cylindrical drum, usually made of steel or plastic, with a series of screens or perforations along its length. As the drum rotates, the granules are lifted and tumble over the screens, separating them into different sizes. The smaller particles fall through the screens and are collected, while the larger particles continue to tumble and are eventually discharged at the end of the drum. Drum screening machines are commonly used in large-scale fertilizer production facilities for final product grading and classification.