The Bond ball mill work index is one of the most commonly used grindability tests in mining and is often referred to as the Bond work index The test is a lockedcycle test where ground product is removed from test cycles and replaced by fresh feed
Get PriceA Bond Ball Mill Work Index test is a standard test for determining the ball mill work index of a sample of ore It was developed by Fred Bond in 1952 and modified in 1961 JKMRC CO 2006This index is widely used in the mineral industry for comparing the resistance of different materials to ball milling for estimating the energy required
A Bond Ball Mill Work Index test is a standard test for determining the ball mill work index of a sample of ore It was developed by Fred Bond in 1952 and modified in 1961 JKMRC CO 2006 This index is widely used in the mineral industry for comparing the resistance of different materials to ball milling for estimating the energy required
Procedure for determination of ball Bond work index in A Bond Ball Mill Work Index test is a standard test for determining the ball mill work index of a sample of ore It was developed by Fred Bond in 1952 and modified in 1961 JKMRC CO 2006 More Detail Bond Ball mill work index determination Grinding
Ball mill bond work index for limestone A Bond Ball Mill Work Index may also be used in the simulation and optimisation of existing mills and the associated grinding circuits Sample Requirements A minimum of 8 kg of material crushed to nominally minus 10 mm is preferred JKTech would stage crush the sample to minus 335 mm as required
Oct 03 2012 The Bond Ball Mill Work Index on SAG ground ore is 1055 kilowatt hours per tonne of material a relatively low amount of energy required to grind the material in a ball mill Read More The Bond ball mill grindability test measures hardness as an index regardless of the feed size so it does not give credit for the additional fines
A Method of Calculating AutogenousSemi In 1991 the Canadians developed the SAGPower Index SPI test using 2 kg of material in a 300 mm diameter mill This test has been further developed by Starkey Hindstrom and Orser 2006 This test now includes a Bond Ball mill work index test The Macpherson test is
Test Method For Bond Ball Mill Work Index Milling Equipment test method for bond ball mill work index A class of machinery and equipment that can be used to meet the production requirements of coarse grinding fine grinding and super fine grinding in the field of industrial finished product can be controlled freely from 0 to 3000 mesh
Bond Work Index Procedure and Method Mineral 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 12″ ore samples in a Ball Mill using a standard ball charge Below describes in general
First a Jar Mill grindability test requires a 5 lb 2 kg sample and produces a direct measured specific energy net Hphrt to grind from the design feed size to the required product size The second test a Bond Work Index determination results in a specific energy value
can be determined using the data generated by a conventional Bond ball mill work index test M ib is NOT the Bond ball work index M ic and M ih values are also provided as a standard output from a SMC Test Morrell 2009 The general size reduction equation is as follows Morrell 2004 b f x f x 2 1 i i 4 2 W M x x 1 1 where
Some authors have proposed methodologies to estimate the BWi using grinding kinetic results due to the difficulties of the standard Bond Ball test reaching acceptable local results but
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
1 Introduction A Bond Ball Mill Work Index test is a standard test for determining the ball mill work index of a sample of ore It was developed by Fred Bond in 1952 and modified in 1961 JKMRC CO 2006This index is widely used in the mineral industry for comparing the resistance of different materials to ball milling for estimating the energy required for grinding and for ball mill
The test work program was carried out on those five ore samples obtained from the copperporphyry orebodies Total of 38 Bond work index tests including duplicates were done Standard Bond ball mill test procedure were carried out on crushed 335 mm 6 mesh material at different
Bond ball mill index test bbmwi a bbmwi test is a standard test for determining the ball mill work index of a sample of ore it was developed by fred bond in 1952 and modified in 1961 the bbmwi is a measure of the resistance of the material to crushing and grinding Online Chat Hot Products
The Bond Ball Mill Grindability Test is a lockedcycle laboratory grinding test It provides the Bond Ball Mill Work Index which expresses the resistance of a material to ball milling This Index is widely used in the mineral industry for comparing the resistance of different materials to ball milling for estimating the energy required for grinding and for ball mill scaleup
Oct 03 2012 The Bond Ball Mill Work Index on SAG ground ore is 1055 kilowatt hours per tonne of material a relatively low amount of energy required to grind the material in a ball mill Read More The Bond ball mill grindability test measures hardness as an index regardless of the feed size so it does not give credit for the additional fines
Bond Rod Mill Grindability Test The test determines the Bond Rod Mill Work Index which is used with Bonds Third Theory of Comminution to calculate net power requirements when siing ball mills Various correction factors may have to be applied The test is a closedcircuit dry grindability test performed in a standard rod mill
Bond Work Index Procedure and Method Mineral 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 12″ ore samples in a Ball Mill using a standard ball charge Below describes in general
can be determined using the data generated by a conventional Bond ball mill work index test M ib is NOT the Bond ball work index M ic and M ih values are also provided as a standard output from a SMC Test Morrell 2009 The general size reduction equation is as follows Morrell 2004 b f x f x 2 1 i i 4 2 W M x x 1 1 where
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
submitted to the Bond ball mill work index test The number of SAG mill revolutions required to grind the material to a P 80 of 17 mm is used to predict AGSAG specific energy using quation 4 Correction E factors for feed size and pebble ing are applied to the AGSAG specific energy as well as specific crush
FIGURE 6 BOND BALL MILL WORK INDEX v UNCONFINED COMPRESSIVE STRENGTH 0 100 200 300 400 UCS MPa 5 10 15 20 25 30 WiBM metric Figure 6 displays the plot of ball mill Work Index Wi BM versus UCS Still no relationship is observed
The Bond lowenergy impact crushing work index more informally the Bond crushing work index is not as common as the Bond ball mill work index and it is a notoriously noisy test The test is a perspecimen test where individual specimens of prepared rock are handpicked by the test operator and placed into the apparatus
Kinetic grinding test approach to estimate the ball mill work index 343 The W i parameter is obtained from Bond’s ball mill grindability test Bond 1961 This test is performed according to the standard Bond procedure which proposed model is presented in Eq 1 This standard grindability test
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