### A Comparison of Test Procedures for Estimating the

Both procedures were conducted using a standard Bond test mill INTRODUCTION The Bond ball work index is widely used in the field of minerals processing as an indicator of ore grindability The work index is determined by means of a locked cycle test procedure that typically

Get Price### Bond Work Index Procedure and Method

Bond Work Index Procedure and Method This Grindability Test or Bond Ball Mill Work Index Procedure is used to determine the Bond Work Index of minus six mesh or finer feed ore samples These equation application methods are used to process <1/2″ ore

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A Bond Ball Mill 12 x 12 of fabricated construction comes with electric motor and gear reducer drive digital counter jogging button to provide positioning of drum for loading and unloading emergency stop button 44 ½ lb ball charge stand and receiving pan Perform Fred C Bond s grindability tests with this standard BWi test ball mill.

Get Price### Test Method For Bond Ball Mill Work Index ball Mill

Standard Bond Ball Mill Grindability Test Methodprocedure Here is the old allischalmers bond work index grindability test procedure the standard feed is prepared by stage crushing to all passing a 6 mesh sieve but finer feed can be used when necessary it is screen analyzed and packed by shaking in a 1000cc graduated cylinder and the weight of 700 cc is placed in the mill and ground dry at 250

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For fine and ultrafine grinding the Bond work index is an inappropriate measure of grindability so alternatives are discussed clinker in a ball mill with its own two step grinding process

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Efficiency correction factors are applied with the Bond equation The method is valid both for clinker grinding and for raw materials grinding This method only gives a rough and initial idea for sizing a cement ball mill To go ahead a deeper study is necessary with ball mills suppliers or a specialized engineering office.

Get Price### Bond Work Indexan overview ScienceDirect Topics

The ability to simulate the Bond work index test also allows examination of truncated ball mill feed size distributions on the work index For grinding circuits where the feed to a ball mill is sent directly to the classifier and the cyclone underflow feeds the ball mill see Figure 3.10 a question arises as to whether this practice will alter the ball mill work index BW i of the material

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The Bond Index conforming rod charge consists of 6 rods of 1.25 diameter and 21 length 2 rods of 1.75 diameter and 21 length The grinding jar for the Bond Index Rod Mill is 12″ x 24″ in size and has a wave shaped design At least 15 to 20 kg sample material is required to simulate a closed grinding circuit in a ball or rod mill.

Get Price### Standard Bond Ball Mill Grindability Test Method Procedure

Here is the old Allis Chalmers Bond Work Index Grindability Test Procedure The standard feed is prepared by stage crushing to all passing a 6 mesh sieve but finer feed can be used when necessary It is screen analyzed and packed by shaking in a 1000 cc graduated cylinder and the weight of 700 cc is placed in the mill and ground dry at 250

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Bond grinding of clinker mcph bond ball mill work index clinker bond grinding index of clinker The F.C Bond Ball Mill is a small universal laboratory mill used in calculating the grindability of Once a suitable grinding charge is prepared from one grade ofballs count and note the number . diameter as shown in the work index Equation 1 .

Get Price### Determination of Bond Work Index of Lucky Cement

In this regard calculation of work index of limestone made by standard Bond grindability test Ball mill was employed to conduct the grinding test of seven different samples Among all seven samples collected from the different faces of quarry Bond work index of limestone Face4A results less than 20kwh/t remaining 6 samples are marked as hard

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Process Ball Charge Clinker Cement Clinker Cement the most commonly employed formula was developed by bond and is as follows max 20.17 where example max biggest ball diameter mm sieve dimension where 20 is retained 15 000 specific mass of material grams 3.09 Wi bond work index kwh short ton 13.49 Du useful inside mill diameter 3.5 In this regard calculation of work index

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The Bond ball mill test provides the so called standard work index WI defined as the specific power required kWh/t to reduce a material from a nominal infinite size to a P80 80 of the material passing through a sieve aperture size of 100 μm 2 3 .Instrumented indentation also known as depth sensing indentation or nanoindentation is

Get Price### Correction of Bond Ball Mill Work Index Test for Closing

The goal of this work is to create an equation to adjust a Bond ball mill work index from one P 80 basis to another The proposed model consists of two components the variable coefficient that is determined from a specific work index determination and a fixed exponent determined by a

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Firstly Standard Bond Work index tests were made for limestone and clinker samples The Bond Work index values of limestone and clinker samples were determined as 13.52 and 13.69 kWh/t respectively The standard set of grinding conditions used is shown in Table 2 for a laboratory mill with a 6283 cm 3 volume Six monosize fractions −0.850

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Bond Ball Mill Work Clinker Process Ball Charge Clinker Cement Clinker Cement the most commonly employed formula was developed by bond and is as follows max 20.17 where example max biggest ball diameter mm sieve dimension where 20 is retained 15 000 specific mass of material grams 3.09 Wi bond work index kwh short ton 13.49 Du useful

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Correlation between the Bond Work Indices calculated from three different method HGI Bond Ball Mill Work Index and Bond Rod Mill Work Index was established the investigation of clinker

Get Price### Grindability of mixtures of cement clinker and trass

Bond ball mill grindability tests Results of the Bond tests are given in Table 1 Experimental work indices for singly ground clinker and trass are the mean of two replicates The replicate values are 13.08 and 13.89 for clinker and 11.52 and 11.78 for trass.

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rod mill Work Index test for these purposes Chose a o closing screen for the ball mill test one standard square root of 2 series mesh size coarser than the plant ball mill circuit P80 If between standard mesh sizes the finer of the chose two Results of Bond ball mill tests conducted with closing

Get Price### Bond Work Indexan overview ScienceDirect Topics

The ability to simulate the Bond work index test also allows examination of truncated ball mill feed size distributions on the work index For grinding circuits where the feed to a ball mill is sent directly to the classifier and the cyclone underflow feeds the ball mill see Figure 3.10 a question arises as to whether this practice will alter the ball mill work index BW i of the material

Get Price### Bond Grinding Of Clinkerchistemania

Bond Work Index BWI Values Of Clinker And Colemanite Are 18.89 Kwh/T And The Clinker Grinding Has Been Reported Also Early Develop Ment Of Strength And More Details Aluminate And Ferrite Is Easier To Grind Than The Clinker Rich In Belite And Objective Of The Bond Ball Mill Test Is To Determine The So Called Standard Work Index

Get Price### A Review of Alternative Procedures to the Bond Ball Mill

Clinker 200 12.36 12.25 0.89 estimation of the Bond work index when the standard Bond ball mill is not available and are faster procedures with a reduced number of grinding steps The

Get Price### CONVENTIONAL CLINKER GRINDINGA NEW

Conventional ball mill for clinker grinding 29/6/2006 10 Thus when E 1 is the energy needed for the first size reduction phase and E 2 is the energy needed in the second grinding phase for the clinker grinding and the clinker Bond work index w i kWh/short ton .

Get Price### QUICK METHOD FOR BOND WORK INDEXAPPROXIMATE

micrometers in size According to the Bond standard procedure the work index is determined by simulating a dry grinding in a closed circuit in the Bond ball mill to achieve 250 circulating load Bond 1949 1952 1961 The test is performed on a raw material approximately weighing 10 kg which coarseness is 100 3.327 mm.

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limestone bond ball mill work Ball mill for limestone grinding power calculation fl ball mill for cement grinding versatile system based on standard modules 2 the fl ball mill is designed for grinding of clinker gypsum and dry or moist additives to any type of cement more info optimization of mill

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WiBM Bond Ball Mill Test Work Index kWh/t Wic Bond Impact Crushing Test Work Index kWh/t WioACT Actual Operating Bond Work Index determined from measurements on the circuit kWh/t WiRM Bond Rod Mill Test Work Index kWh/t WiSTD Standard Circuit Bond Work Index expected or designed used for circuit design Specific energy requirement at

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Bond Ball Mill Work Index is used for determine the grindability of materials and help to choose the suitable grinding equip Position Home Page >>> Products >>> Laboratory Equipments >>> Lab Grinder Bond Ball Mill Work Index.

Get Price### Bond Grindability Test Procedure

The Bond Ball Mill Grindability test is designed to give a measure of the grinding characteristics of a material by finding the amount of size reduction resulting from a controlled energy input Ball Mill Grindability of a material depends upon its hardness structure the manner in

Get Price### Bond Grinding Circuit Efficiencyceecthefuture

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

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Limestone Bond Ball Mill Work Rod mill limestone grinding mm to mm size wiersmaenzoonnlod mill limestone grinding 10 mm to0 mm size 20 tp h the bond index ball mill rod mill bt 100 xl is used in the planning of in a size range from 25 mm down to 21 mm whereas ball mill work index bwi is used material feed size 335 mm with.

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Bond Ball Mill Work Index is used for determine the grindability of materials and help to choose the suitable grinding equip Position Home Page >>> Products >>> Laboratory Equipments >>> Lab Grinder Bond Ball Mill.

Get Price### Botswana Bond Ball Mill Grindability Test

Botswana Bond Ball Mill Grindability Test Grindability Test Fives Has Developed And Continuously Improved Over The Years A Precise And Reliable Grindability Batch Test The So Called FCB Index The FCB Index Requires Less Than 50 Kg Of Raw Material To Measure Grinding Specific Energies And Grain Size Distributions When Using An Optimized Ball Mill Operating In A Close Circuit

Get Price### Table of Bond Work Index by Minerals

Source 1 Table of materials reported by Fred Bond Source 2 Outokumpu The science of comminution Source 3 Equipment and pipelines Source 4 Tenova Bateman mills AG/SAG Rod Ball Mills Source 5 Doering international cylpebs Source 6 SME handbook of mineral processing N.L Weiss Editor NY 1985 Bond Work Index Tester

Get Price### Name Of Unground Clinker Ball From Cement Mill

Name Of Unground Clinker Ball From Cement Mill 116 Portland Cement Manufacturing Aug 17 116 portland cement manufacturing process description17 portland cement is a fine powder gray or white in color that consists of a mixture of hydraulic cement materials comprising primarily calcium silicates aluminates and aluminoferrites more than 30 raw materials are known to be used in the

Get Price### Alsto Bond Index Ball MillMineral Stats

Alsto Bond Index Ball Mill Internationally accepted mineral metallurgical standard test procedures to determine the physical properties of ores include the Bond ball mill work index This is empirical index determined by closed circuit grindability tests developed by F.C.Bond in the mid 1930 s It requires a specific 305mm diameter x 305mm

Get Price### Bond Efficiency GMG ICE v1 r04 Determining

WiBM Bond Ball Mill Test Work Index kWh/t Wic Bond Impact Crushing Test Work Index kWh/t WioACT Actual Operating Bond Work Index determined from measurements on the circuit kWh/t WiRM Bond Rod Mill Test Work Index kWh/t WiSTD Standard Circuit Bond Work Index expected or designed used for circuit design Specific energy requirement at

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I have procedrue for clinker grindability test in excel formate If u insert the require values it will give the Bonds work index If u r interested please give your email id so that i can mail u procedure as well as calculations Following is my mail id blmurthy sagarcements BLM Reply Page 1 of 3 1 2 3.

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Calculation of the power draw of dry multi compartment ball mills May 6 2004 Key words power draw cement dry grinding ball mill right mill for the specified duty is the most critical for circuit design since it has the Bond method has been used for ball mill selection in both mineral and cement.

Get Price### A study on the effect of ball diameter on breakage

volume of mill the rate of ball on ball contacts per unit time increases with the increase in ball diameter because the number of balls in the mill increases as 1/d3 Thus the rates of breakage of smaller sizes are higher for smaller ball diameters The relation with T a and ball diameter in a 0.6 m diameter mill were given as aT α 1/d 9.

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W = Bond s work index kWh/t P 80 = particle diameter of product 80 passing µm F 80 = particle diameter of feed 80 passing µm o The Bond s Work Index of a material which is commonly used in the British Commonwealth as well as US is determined in a standard laboratory ball mill but the test is cumbersome to perform.

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The laboratory procedure for running a Bond ball mill work index test requires that the operator choose a closing screen sieve size The instruction is to choose a sieve size that results in the

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