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planilla de calculo molino bolas
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BOND BALL TOPSIZE CALCULATION FOR WET OVERFLOW MILLSEnglish case 1 case 2F80, microns 1496 1550SG 3.17 2.57WI, kwh/st 18.50676 14.2% critical speed 77.2 76Mill ID, ft 12.6 19.3
Ball Top Size, inches: 1.3 1.0Ball Top Size, mm 32.5 26.4
MetricF80, microns 1870 1550SG 2.85 2.57WI, kwh/mt 15.66 15.6% critical speed 73 76Mill ID, m 5.88 5.88
Ball Top Size, mm 30.4 26.4Ball Top Size, inches 1.2 1.0
B=[(√FK 3√S gW i
(%C s √3 .281D )]´ 25 . 4
where B = ball dia (mm )
F = F80 (mm) Wi = Work Index ( kWh/t ) Sg = ore specific gravity
Cs = Critical speed
D = Diameter inside shell (m )
K = 350 for wet overflow mills
= 330 for wet grate discharge mills
= 335 for dry grate discharge mills
B=[(√FK 3√S gW i
(%C s √3 .281D )]´ 25 . 4
where B = ball dia (mm )
F = F80 (mm) Wi = Work Index ( kWh/t ) Sg = ore specific gravity
Cs = Critical speed
D = Diameter inside shell (m )
K = 350 for wet overflow mills
= 330 for wet grate discharge mills
= 335 for dry grate discharge mills