Ball mill Observation of the milling process: comminution of solids Features - comminution with a ball mill - observation of the milling process Learning objectives/experiments - cascade and cataract motion, critical speed - theoretical and actual power demand - degree of comminution dependent on milling time, rotation speed, ball diameter, ball filling, material to be milled Specification [1] comminution of solids with a ball mill [2] 2 drums with steel jackets and transparent fronts, 1 steel drum with lifting bars [3] 1 drive roller with adjustable speed, 1 loose roller [4] axle spacings of rollers adjustable to accommodate different drums [5] measurement of power consumption [6] milling time programmable by timer Technical data 2 drums with borosilicate fronts - Ø 100mm/185mm - capacity: approx. 1,15L/7,5L 1 drum with lifting bars - Ø 185mm - capacity: approx. 7,5L Drive roller, loose roller - Ø approx. 50mm 1 set of milling balls - Ø 5/10/15mm Measuring ranges - power consumption: 0...200W - speed: 0...370min-1 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 600x520x460mm Weight: approx. 76kg