This Table of Ball Mill Bond Work Index of Minerals is a summary as (AG/SAG, Rod, Ball Mills) Source 5: Doering international GmbH cylpebs Source 6: SME handbook of mineral processing, N.L Weiss Editor, NY 1985 . Bond Work Index Tester. By David Michaud 2017-09-22T18:26:56-04:00 June 19th, 2015 Categories: Grinding Comments Off on Table of Bond Work
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Measuring ore grindability in rod mills. The Bond Rod Mill Work Index is a measure of the resistance of the material to grinding in a rod mill. It can be used to determine the grinding power required for a given throughput of material under rod mill grinding conditions. It is a 'locked cycle' test conducted in closed circuit with a laboratory screen. Sample Requirements: A minimum of 20 kg of
* Bond F. C., “Crushing Tests by Pressure and Impact”, Trans AIME, Vol 169, 1947, pp 58-66. Bond Rod Mill Grindability Test. The test determines the Bond Rod Mill Work Index which is used with Bond’s Third Theory of Comminution to calculate net power requirements when sizing ball mills*. Various correction factors may have to be applied.
The test determines the Bond Rod Mill Work Index which is used with Bond’s Third Theory of Comminution to calculate net power requirements when sizing ball mills*. Various correction factors may have to be applied. The test is a closed-circuit dry grindability test performed in a standard rod mill. Contact Now. Bond's Work Index Ball Mills insmart systems. bond ball mill work index
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 2.1 mm whereas Ball Mill Work Index (BWI) is used for the range from 2.1 mm down to 100 µm. Adjustment of grinding parameters:
Bond rod mill work index results from Australian laboratories with smooth liners should not be used in the SAGMILLING.COM models. The test is a 'locked-cycle' test where ground product is removed from test cycles and replaced by fresh feed. The test must achieve a steady-state before completion. Sample Requirements. The test requires about 15 kg of material. Although it can work on feed as
Bond Inde Mill For Grinding China Mines Crusher For Iron ore crushing work index Service CHAT ON LINE iron ore crushing work index 511 A gyratory crusher received iron ore from the mines at 15 m top sie. and Mih HPGR ore work index can be A grinding mill 305 mm ˆ 305 mm was used for the Bond ball mill work abrasion index of jaw crusher for iorn ore. crushing and abrasion of line
Generally, Bond work index is a common method for selecting comminution equipment as well as estimation of grinding efficiency and calculating required power. In the current research, a simple, fast and accurate procedure is introduced to find the
Bond Rod Mill Grindability Test. Grinding Solutions can carry out Bond Rod Mill Work Index tests to determine the energy requirements for milling ore in a rod mill. The test requires a minimum of 20kg of -12.5mm material. Closing screen sizes typically range from 4.75mm to 212µm. Abrasion Index Test
The rod mill work index laboratory test is conducted by grinding an ore sample prepared to 80% passing 12.7 mm (½ inch, Index, or HGI, which is much the same as the relative ease or difficulty of grinding ores as assessed by the Bond Work Index (Bond, 1961). The HGI is determined by using standard techniques and equipment as described in ASTM D409 (ASTM, 2009), where coal specimens are
using Bond rod mill work index (RMWI), and Bond ball mill work index (BMWI). However, the author has developed a relationship between the Bond third theory SE values and the AG/SAG SE values to enable the additional power required for AG/SAG milling to be determined. AG/SAG inef ciency varies according to the transfer size ﬁ . Get Price. Bond Ball Mill Work Inde Determination. JKTech
FIGURE 5: BOND ROD MILL WORK INDEX v. UNCONFINED COMPRESSIVE STRENGTH 0 100 200 300 400 UCS (MPa) 5 10 15 20 25 30 35 WiRM (metric) The lack of fit observed relating the crushing Work Index was expected to carry over to the other Bond Work Indices. Figure 5 displays the plot of rod mill Work Index (Wi RM) versus UCS. These. Contact Now
The Bond Abrasion Test determines the Abrasion Index, which is used to determine steel media and liner wear in crushers, rod mills, and ball mills. Bond developed the following correlations based on the wear rate in pounds of metal wear/kWh of energy used in the comminution process. Wet rod mill : Rods: lb/kWh = 0.35(Ai 0.020) 0.2: Liners: lb/kWh = 0.035(Ai 0.015) 0.3 : Wet ball mill
Rod Mills, How Do They Work? Rod mills are very similar to ball mills, except they use long rods for grinding media. The rods grind the ore by tumbling within the the mill, similar to the grinding balls in a ball mill. To prevent the conditions leading to rod charge tangling, the length to diameter ratio is maintained at 1.4 to 1.6. Rod mills accept feed up to about 50 mm (2 in.) and produce a
Comparison of Ore Hardness Measurements for Grinding Mill Design for the Tenke Project John Starkey1, Bond rod and ball mill work indices are readily converted to pinion energy for rod and ball mills but not for SAG mills. Reproducibility, while not studied in this stone is clearly a part of the meaningfulness of the data presented. It was clear from the data that there are large variances
Bond’s approach consists of determining the ore hardness characteristics, or Work Index (Wi) via standardized laboratory testwork. The full suite of Bond comminution tests provide the Ball Mill Work Index (BWi), the Rod Mill Work Index (RWi), the Crusher Work Index (CWi) and the Abrasion Index (Ai). Over the years, it has been determined that
The Bond rod-mill work index is used in conjunction with Bond’s third theory of comminution to merely calculate net energy requirements for sizing rod-mills. This test was originally developed in the mid 1930s by F.C. Bond. Though, it was altered in succeeding years, it
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.