A simulation model for an airswept ball mill grinding coal
Experimental size distributions for coal ground in O_98 m LD. pilotscale airswept ball mill fitted with a twincone classifier 259 ing to a frac'tional filling of the mill volume by the bed of balls of J = 0_2, using a formal porosity of for the ball bed (290 lb/ft3)_ The dry mass of coal used was 122 g; assuming an apparent specific ...