# bond ball mill calculations spreadsheet

### AMIT 135 Lesson 6 Grinding Circuit Mining Mill Operator

The mill product can either be finished size ready for processing or an intermediate size ready for final grinding in a rod mill ball mill or pebble mill. AG/SAG mills can accomplish the same size reduction work as two or three stages of crushing and screening a rod mill and some or all of the work of a ball mill.

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Rod mill as first stage and ball mill sizing with the Bond method for rod mill s ball 7 Power kW HP 8 Diameter calculation Mill of the critical speed . live chat Ball Mill Power Calculations. Aug 23 A nice and pretty online Ball Mill Power draw Calculator was put live by one of the great prophets of grinding. live chat

Get Price### Ball Mill Design/Power Calculation

Jun 19 2015 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 as P80 and maximum and finally the

Get Price### Procedure for determination of ball Bond work index in the

The Bond ball mill grindability test is run in a laboratory until a circulating load of 250 is developed. It provides the Bond Ball Mill Work Index which expresses the

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May 01 2021 The Bond grindability test is performed in a standard Bond ball mill dimensions DxL=305x305 mm and a speed revolution of 70 min −1. The mill is filled with balls with a diameter of 15.5 to 30.6 mm and has a total weight of 20.125 kg.

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### DETERMINATION OF THE BOND’S WORK INDEX OF BABAN

Bond devised several methods for predicting ball mill and rod mill energy requirements and mass passing each sieve size was plotted against particle size on spreadsheets to determine the 80 passing size of products for both reference and test ores. Previous works Deniz the computer programme was used to calculate the 80 passing size.

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### GMSG GUIDELINE DETERMINING THE BOND EFFICIENCY

Results of Bond ball mill tests conducted with closing screens of 75 µm or finer are to be treated with caution. The Common Plant Grinding Circuit Calculations 1. Rod Ball Mill Circuit or Single Stage Ball Mill s or Multi Stage Ball Mills or HPGr Ball Mill s Circuit F80 = 19 300µm P80 = 155µm W Total = 8.56

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There are two basic ways to perform calculations in Excel Formulas and FunctionsFormula vs FunctionA Formula is an equation designed by a user in Excel while a Function is a predefined calculation in the spreadsheet application.

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Get Price### Calculation Of Power For Ball Mills And Grinding

Calculation Of Power For Ball Mills And Grinding. More suitable grinding media in preparing the feed of flotation tests may be the priority in sizing industrial ball mills by means of accurate measurements equation of dimensional homogeneity and of simple structure containing the ball mill in dry grinding tests correspond to c 106 while the power.

Get Price### PDF Grinding in Ball Mills Modeling and Process Control

Jun 01 2012 Grinding in ball mills is an important technological process applied to reduce the. size of particles which may have different nature and a

Get Price### How grinding mill design changed over the last 30 years

Jun 03 2020 The design of such grinding mills is extremely critical requiring sophisticated software tools proprietary calculation worksheets and experienced technical engineers and drafters. This blog will review how the mill design process has changed over the last 30 years. While most of the changes have been positive new issues and problems have risen in the

Get Price### Bond formula for the grinding balls size calculation

Oct 19 2017 There is a mathematical solution to this problem the Bond formula. 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

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### Small Scale Tests to Characterise Ore Grindibility

The Bond rod mill work index is used to calculate the power requirement at intermediate size i.e. from 12.5mm to about 1mm. The test has been mainly used for the design of rod mills or primary ball mills but it can also be used along with the other Bond tests BWI and cWI for SAG mill design using semi empirical relationship 6 . BOND LOW

Get Price ### Ball mill calc 2

Ball mill calc 2. Arm of gravity a Please Enter / Step to Input Values. Centre Distance mill center to media top layer h m. Mill Effective Diameter. Deff m.

Get Price### Machine Foundation Design Calculation Xls

Ball Mill Design Calculation Xls And PDF File Cement mill Wikipedia the free encyclopedia. Energy consumption is typically half that of a ball mill. Get Price Agitator Design Calculation Xls. Home Search Directory agitator design calculation xls. Use this MS Excel spreadsheet to calculation the power requirements and mixing Washing Machines

Get Price### Calculation of energy required for grinding in a ball mill

The grinding product size P in a Bond ball mill which is given by the aperture size which passes 80 of the grinding product as a function of the aperture size of the test screen Pk can be expressed by the formula P= P k K 2. These functions for G and P enable us to calculate the value of Wi for any other size of grinding product if we know

Get Price### Excel Sheet For Mass Balance Calcs

Order of calculation is a major concern if the spreadsheet contains calculations with circular references e.g. circulating loads around a ball mill circuit . A spreadsheet program that calculates by backward chaining to determine an optimal order of calculation e.g. Lotus 1 2 3 Corel Quattro Pro can converge a calculation much faster than

Get Price### Heat balance calculators

The calculation of the thermical balance of the ball mill is now proposed according 2 methods The first method we know the ventilation of the mill the cement temperature and we want to calculate the water quantity we need to inject in order to get the temperature at mill outlet we would like to have.

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### Flange Calculation Xls

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Pneumatic conveying design guide Methods for 2021 2 21 6. Free Excel calculation tool. The following link gives access to the download of an Excel file performing the calculations according to this methodno guarantee is given one should use this file as a 1st approximation and consult a reputable company for detail design Link This pneumatic conveying calculation

Get Price### Ball mill work index adjustment

Calculate the Bond specific energy of each ball mill test E ball = 10 Wi P80 0.5F80 0.5 . If you are going to use Morrell equations then also calculate the Morrell specific energy for each ball mill test E ball = 4 Mib P80 0.295 P80 10 6F80 0.295 F80 10 6 . Fit the specific energy results for all BM tests E ball = K

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### FC Bond Mill

grams per revolution Gbp is the ball mill grindability. The ball mill work index Wi kWh/short ton is calculated from the following equation Bond 1961 1 The mill should be cleaned by either blowing air into it or wiping the interior with a cloth and or brush. The FC Bond ball mill is now ready for the next sample.

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### Application of Operating Work Indices in Autogenous

Bond Ball Mill Work Index BWi kWh/t 13.4 Bond Rod Mill Work Index RWi kWh/t 18.1 Table 1. Example of AG/SAG Ball Mill Circuit Wio Calculations 1 2 ABstrAct Optimum use of power in grinding both in terms of grinding efficiency and use of installed capital can have

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### C O N S U L T I N G L T D TECHNICAL ..

EF5BM= P80 10.3 1.145 P80 3 The EF4 formula requires both the rod mill and ball mill work index rod mill Wi is used to calculate the optimal feed size and because this is a single stage ball mill calculation the F80 is actually the rod mill feed size 10 000 µm from Table 1 and the P80 is the ball mill circuit product. The EF5 factor only applies below 75 µm to ball

Get Price ### Determination Of The Bond Work Index Using An Ordinary

Numerically the work index is the energy required in kwh/t to reduce a given material from theoretically infinite feed size to 80 passing 100 microns. The work index of a particular material is determined in the laboratory by conducting the standard Bond grindability test. Bond developed separate tests for the rod mill and the ball mill.

Get Price### Circulating load

Nov 18 2014 Slide 2 Content Introduction Circulating load calculate Most factories the purpose of control Effective factors for circulating load Test design Conclusion References 3. Slide 3 circulating load ratio As the ratio of the amount of solids going through the ball mill divided by the amount of solids going through the circuit.

Get Price### Ball Mill Design/Power Calculation

Dec 12 2016 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

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### Bond Grinding Circuit Efficiency

Mill Ball Mill Closed circuit crushing to 16 mm Open circuit 8’ dia. rod mill to 1 mm Closed circuit 8’ dia. ball mill to P80 um The ore Test Work Index = Circuit Operating Work Index 9 The Standard Bond Circuit Coarse Ore Bins Fine Ore Bins Screen Crushing Screen Classification Rod Mill Ball Mill THIS IS THE REFERENCE BASIS FOR ALL WORK

Get Price ### Bond formula for the grinding balls size calculation

Oct 19 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

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### Grinding Mill Computer Model

Ball Mill Kb Kb=E4 E5 E6 E7 E8 E4Oversized feedif the feed is greater than 16 000µ for the rod mill and 4 000µ for the ball mill. E RW FF F R rr o o r 4 7 = − − R F r r = Pr FoOptimum Feed Size for rod mills F o W r =16 000 13 o E RW FF F R rb o o r 4 7 = − − R F r P b b = FoOptimum Feed Size for ball mills F Wb =4 000 13 MILLCALCv2a 7 19/02/2004

Get Price ### Bond F C Crushing And Grinding Calculations Allis Chalmers

Since mills and crushers operate 247 replacing a worn liner requires significant shutdown time.Crushing and Grinding Calculations by Bond F. C. 62 reprinted from British Chemical Engineering by Allis Chalmers Industrial Press Department This is the premier Bond Work Index equation application manual.

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