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ball mill work index calculation

AMIT 135: Lesson 7 Ball Mills & Circuits Mining Mill

Mill diameter; Mineral density; Work Index. Bond estimated the amount of wear in terms of kilograms per kWh based on the abrasion index, A;, i.e., Wet Ball Mill = kg kWh = 0.16(A i-0.015) 0.33; Dry Ball Mill = kg / kWh = 0.023A i 0.5; Replacement Ball Size

Ball Mill Sizing With Bond Method Work Index Base

Sizing Of Ball Mill Based On Grindability. The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are material to be ground, characteristics, bond work index, bulk density, specific density, desired mill tonnage capacity dtph, operating % solids or pulp density, feed size as f80 and maximum chunk size, product size. Live Chat; Jktech Laboratory Services

Bond Tests | SGS

The test determines the Bond Ball Mill Work Index which is used with Bonds Third Theory of Comminution to calculate net power requirements*. Various correction factors may have to be applied. W = Wi (10/P 10/F) Where W = Net power consumption in kWh/t Wi = Bond work index

ball mill work inde calculation

Work Index Know More 'Work Index' is to measuring energy in size reduction what the 'meter' is to measuring It starts with Bond's Work Index equation: For any circuit, whether a crushing circuit, a rod mill, or a closed ball mill circuit, the Work Index always means...

ball mill work index calculation

Ball Mill Design/Power Calculation. 2018-6-21 · The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index, bulk density, specific density, desired mill tonnage capacity DTPH, operating % solids or pulp density, feed size as F80 andget price

Ball Mill Work Calculation Xls

ball mill work index calculation xls - Barite Metallurgy Mill. ball mill work index calculation xls. Bond Work Index Formula-Equation BASIC EQUATIONSSIZE DISTRIBUTION AND EXPOSURE RATIOEQUATIONS FOR WORK INDEX VARIATIONSWORK INDEX AND CRACK ENERGY The basic work index equation is:W = 10 Wi/P 10 Wi/F(1)where W is the

Bond Index Ball Mill / Rod Mill BT 100 XL - RETSCH

In order to perform the Bond Index Test successfully it is necessary to use pre-crushed sample material as defined below: Module Ball Mill. Minerals pre-crushed to < 3.35 mm and sieved ; Drillcore pre-crushed to < 3.35 mm and sieved ; Half Drillcore pre-crushed to < 3.35 mm and sieved ; The Bond Index conforming ball charge consists of: 43 x 1.45 balls

A New Approach to the Calculation of Work Index and the

The mill power is measured by an electric system based on the torsion of the axis and depends on the rota- tion frequency. For each batch test i the mill is loaded with a feed mass m = 1 kg and rotates for a time ti. At the end the energy Ei(Joules) is recorded and

Bond formula for the grinding balls size calculation

19/10/2017· It uses to help determine the grinding media optimal size must be loaded into the ball mill for proper operation ensure. The calculation formula is below: B the grinding balls diameter, mm; A the correction factor (for grinding balls A = 20,17; for cilpence A = 18,15);

CORRELATION BETWEEN BOND WORK INDEX AND

ball mill grindability. The test mesh used was 100 mesh P > 14-16 ]. The Bond work index W i was calculated from Equation (2) W i = 44.5/(P 1) 0.23 X (Gbp) 0.82 [10/(P 80) 0,5 0.5± 10/(F 80) ] (2) Where: F 80 is the size in (µm), at which 80 percent of the new feed to ball mill passes,

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