Industrial screening is extensively used for size separations from 300 mm down to roughly 40 µm, although the efficiency decreases rapidly with fineness. Dry screening is generally limited to material above ca. 5 mm in size, while wet screening down to ca. 250 µm is common. Although there are screen types that are capable of efficient size separations down to 40 µm, sizing below 250 µm is more commonly undertaken by classification. Selection between screening and classification is influenced by the fact that finer separations demand large areas of screening surface and therefore can be expensive compared to classification for high-throughput applications.
Screen performance; mathematical models; vibration ...