Investigation on enhancing classification of moist material by variable vibration intensity elastic screening

Abstract

In mineral beneficiation, screening is critical for classifying materials. There are problems with low screening efficiency and adhesion and accumulation of material during the screening process of moist material. So, the process of enhancing the classification of moist material by an elastic screen surface with variable vibration intensity (ESSVVI) was investigated in this paper. The feeding speed of material was optimized during screening, and the synergistic effect of multi-parameters was further investigated by response surface methodology (RSM). The results showed that this screen surface could achieve elastic screening with variable vibration intensity, effectively overcome the moist material adhesion, and resolve the issue of material accumulation. The screening efficiency reached the maximum at 10.00 t·h−1·m−2 feeding speed. The impacts of screen body amplitude, frequency, and feeding speed on elastic screening performance with variable vibration intensity were found significant, and there were significant interactions among these parameters. This work can provide a reference to enhance the classification of moist material.