Performance investigation of indigenously designed multideck Screen (MDS)

Abstract

Multideck screen (MDS) has found wide applications in mineral processing industry and their performance can be evaluated on the basis of various parameters. The screen was indigenously designed with three decks of various changeable screens. The efficiency of MDS was evaluated at different parameters through efficiency equation and partition/Tromp curves. The imperfection factor and cut size was also determined. Material feed rate of 1 kg/min, 2 kg/min and 3 kg/min; screen angle of 7°, 10° and 13°; aperture size of 2 mm, 1mm and 0.3 mm in the three decks were taken into account. The results showed that the efficiency of MDS improves with increasing screen angle and aperture size whereas it reduces with increasing feed rate. The cut size value improves with increasing screen angle and aperture size whereas it reduces with increasing feed rate. The imperfect factor value reaches zero with increasing screen angle and aperture size while value of imperfect factor increases with increasing feed rate. The maximum efficiency was found approx. 95% at screen angle of 13°, feed rate of 1 kg/min and aperture size of 2 mm.