#### PDF Measurement and modeling of residence time

Measurement and modeling of residence time distribution of overflow ball mill in continuous closed circuit Ahmad Hassanzadeh Related Papers A survey on troubleshooting of closed circuit grinding system By Ahmad Hassanzadeh Dynamic simulation of grinding circuits By Steven Spencer . Ball mill Ball grinding mill All industrial Tecno 3 Srl ball mill ML series horizontal for ceramic for the pharmaceutical industry ball mill ML series Rotational speed 50 rpm 300 rpm The ball mill splits the sample because of the hits against the balls It moves along an arc of a semi circle due to the dragging of the pitcher in the cylinder motor . Optimization and Performance of Grinding Circuits The The ball mill grinding efficiency was poor and could be indicated by the fraction < 125 µm of only 5 9 % or x P 80 >400 µm in the mill discharge This was deemed due to poor hydrocyclone performance which was characterized by higher feed solids content coarser overflow x P 80 >200 µm as well as cut sizes x T > 200 µm . Overflow Ball Mill Wet Type Overflow Ball Mill XinhaiThe main component of wet overflow ball mill is a cylinder with bigger diameter and smaller length which is revolved by transmitting machinery Materials are put in cylinder through the feed opening and then thoroughly grinded The falling course of iron balls and ores can produce huge falling impact and autogenous grinding