Jan 01, 2009 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., 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 for grinding, and for ball mill ...
Get PriceJan 01, 2009 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., 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 for grinding, and for ball mill ...
The aim of this study was to develop a new method for assessing the Bond work index in a ball mill BBWI, which is based on a first order kinetics present in the Bond ball mill for grinding mineral raw materials Austin et al., 1981 Ahmadi and Shahsavari, 2009. Theoretical basis of quick procedure
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 terms the Bond Work Index Procedure used by a Professional Metallurgical Testing Laboratory. If you ...
Bond Ball Mill Work Index kWhrtonne 18.34 17.17 The results showed the spherical grinding media to require 18.34kWhrt of energy to grind the sample compared with an energy requirement of 17.17kWhrt for the RELO Grinding Bodies, a difference of 6.4.
Bond Work Index Testing Equipment and Procedures See Annexes A, B and C for Bond crushing, rod mill and ball mill test equipment and procedures. Accuracy of Comparative Circuit Work Index Efficiency Determinations This will follow in an addendum to this guideline Sub-topics will .
For any circuit, whether a crushing circuit, a rod mill, or a closed ball mill circuit, the Work Index always means the equivalent amount of energy to reduce one ton of the ore from a very large size to 100 um.
Bond Index Ball Mill Rod Mill Bt 100 Xl Retsch. The grinding jar for the bond index rod mill is 12 x 24 in size and has a waveshaped design at least 15 to 20 kg sample material is required to simulate a closed grinding circuit in a ball or rod mill the rod mill work index rwi is used for particle size determination in a size range from 25 mm down to 21 mm whereas ball mill work
the bond ball mill work indices determinations gave reasonably reproducible results, significant variation was observed in the measurement of the bond rod mill work index on at least one sample tested, and large variations in abrasion index and crushing work index were due to variations in the test method across the laboratories.
Geometallurgy 1,213 words exact match in snippet view article find links to article commonly used for geometallurgical modeling Bond ball mill work index test Modified or comparative Bond ball mill index Bond rod mill work index and Bond low
bond ball mill work index testwork providers - chinagrindingmill.net. bond ball mill work index testwork providers 11 Jun 2012 Gulin supply Mining and construction equipment for mineral handling. The crushing, screening, washing ...
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 12 ore samples in a Ball Mill using a standard ball charge. Below describes in general terms the Bond ...
Bond Index Ball Mill Rod Mill BT 100 XL RETSCH. The grinding jar for the Bond Index Rod Mill is 12 x 24 in size and has a waveshaped design At least 15 to 20 kg sample material is required to simulate a closed grinding circuit in a ball or rod mill The Rod Mill Work Index RWI is used for particle size determination in a size range from 25 mm down to 21 mm whereas Ball Mill Work
Comparative assessment of the Bond Ball Mill Work Index tests. Authors Chitalov, L. S., Lvov V.V. The article presents the review, studies and classification of the existing methods of the Bond Ball Mill Work Index determination. The scope of the analysis embraces the methods of Aksani and S nmez, Todorovi, Berry and Bruce, Horst and Bassarear, Ahmadi, Kapur, Gharehgheshlagh, Lewis,
Keywords Ball Mill Work Index, Bond Index, Grindability, Ball grinding, Ore testing, Grinding energy consumption, Physical and mechanical ore properties. Cite this Article Vladislav Valerevich Lvov and Leonid Sergeevich Chitalov, Comparison of the Different Ways of the Ball Bond Work Index Determining, International Journal of Mechanical ...
Read more. This test is part of a suite that will help determine the operating parameters for ball mills and thus the economic viability of your project. The Laboratory Comparative Work Index gives an approximate Bond Work Index for an ore sample. This can then be used with Bonds Third Theory of Comminution to calculate net power requirements needed for grinding.
Jun 16, 2015 The test is designed to give a reasonable indication of the grinding work index of an ore material relative to one or more known standards. It is not applicable to mill tailings material. Basic Equipment Set of screens 75 to 2440 micron sizes. Ro-Tap Sieve Shaker Ball mill rolls CMS ball mill No.1 with approximately 10 kg of ball charge distributed as follows Procedure Crush the known and ...
The ball mill work index laboratory test is conducted by grinding an ore sample prepared to 100 passing 3.36 mm 6 mesh to product size in the range of 45-150 m 325-100 mesh, thus determining the ball mill work index Wi B or BWi. The work index calculations across a narrow size range are conducted using the appropriate laboratory work index determination for the material size of interest, or by
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 10P 10F Where W Net power consumption in kWht Wi Bond work index either Imperial or Metric units
WiBM Bond Ball Mill Test Work Index kWht Wic Bond Impact Crushing Test Work Index kWht WioACT Actual Operating Bond Work Index determined from measurements on the circuit kWht WiRM Bond Rod Mill Test Work Index kWht WiSTD Standard Circuit Bond Work Index expected or designed used for circuit design. Specific energy requirement at ...
The Bond work index is a measure of ore resistance to crushing and grinding and is determined using the Bond grindability test. Its value constitutes ore characteristic and is used for industrial...
FIGURE 8 ROD MILLBALL MILL WORK INDEX RATIO v. UNCONFINED COMPRESSIVE STRENGTH 100 200 300 400 UCS MPa 0 0.5 1 1.5 2 WiRMWiBM metric Siddall et al 1996 identified the ratio of Bond rod mill Work Index and ball mill Work Index as being indicative of an ores compentency. Figure 8 plots this ratio versus UCS no trend is apparent ...
JK Bond Ball Mill Test Since its introduction in the 1960s, the Bond Ball Mill Work Index BBMWi parameter has been extensively used in predicting ball mill power draw. Use of Work Index Along with comminution circuit design the work index parameter is widely used in tracking mill performance. Due to the age and lack of controls for the test,
The grindability of an ore in the process of mineral dressing can be determined by use of the Bond work index Wi. This index is determined on a laboratory-scale using a Bond ball-mill and by ...
Limestone Analyses via Bond Work Index For full scale on-site ... Limestone Analyses via Bond Work Index ... limestone is typically received with a diameter of about 1 in. 25 mm ... fraction underflow is returned to the ball mill.