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,
Read More2020-7-30 A Bond Ball Mill Work Index may also be used in the simulation and optimisation of existing mill(s) and the associated grinding circuit(s). 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 3.35 mm, as required for the Bond Ball Mill Work Index test feed.
Read More• Grindability as indicated by the bond ball mill work index (BWi) ranged from 10–35 kWh/t, with the majority between 15 and 27 kWh/t. No clear relationships in terms A*b and/or BWi was identified with geological aspects logged from the drill core such as weathering, lithology, alteration, alteration intensity, veining or combinations of these.
Read MoreJK Bond Ball Mill Test; Our flotation ore characterisation test is the JKTech Floatability Index (JKFi) Test. JK Drop Weight Test and SMC Tests® are licenced to 48 metallurgical laboratories globally. To date, over 55,000 JKTech
Read MoreJKTech’s testing, equipment and laboratory services ensure globally reliable results. JKTech Pty Ltd P: +61 73365 5842 ... • Bond Ball Mill Work Index Test • Bond Rod Mill Work Index Test • Point Load Test • Equotip esTt • HPGR esTt • Flotation esTting
Read More2021-11-27 A total of 221 variability samples from the Lac Otelnuk deposit were submitted for a grindability characterization study which involved the SPI® and
Read MoreJKTech Pty Ltd UQ Experimental Mine Site 40 Isles Road Indooroopilly QLD 4068 Brisbane, Australia P: +61 7 3365 5842 F: +61 7 3365 5900
Read More2015-6-6 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.
Read More2018-12-7 The test work program was carried out on those five ore samples obtained from the copper-porphyry orebodies. Total of 38 Bond work index tests, including duplicates, were done. Standard Bond ball mill test procedure were carried out on crushed (
Read MoreJKTech’s testing, equipment and laboratory services ensure globally reliable results. JKTech Pty Ltd P: +61 73365 5842 ... • Bond Ball Mill Work Index Test • Bond Rod Mill Work Index Test • Point Load Test • Equotip esTt • HPGR esTt • Flotation esTting
Read MoreThe 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 Sönmez, Todorović, Berry and Bruce, Horst and Bassarear, Ahmadi, Kapur, Gharehgheshlagh, Lewis, Magdalinovich, Karra, Smith and Lee, Armstrong, as well JKTech and Aminpro approaches.
Read MoreConsequently, the Bond abrasion test, dating back to 1963, is still used to estimate total mill media wear. This is a purely empirical test based only on ore properties. A comparison of the wear/energy values resulting from the Bond abrasion test with actual mill data for five ores and 11 mills is shown in Figure 1. 0 0.02 0.04 0.06 0.08 0.1 0 ...
Read More2021-11-27 The FC Bond Work Index Test Ball Mill was designed by F. C. Bond for use in determining the Bond Index, a measure of grindability and power required for grinding applications. The FC Bond Mills are used in laboratories throughout the world. A copy
Read More2020-3-24 the relative grindability of different ores in ball milling (Bond, 1961 and Rowland and Kjos, 1980) To use the Bond ball mill work index to determine the ball mill specific energy required for a particular grinding task, the Bond equation must be used and the
Read More2018-12-7 The test work program was carried out on those five ore samples obtained from the copper-porphyry orebodies. Total of 38 Bond work index tests, including duplicates, were done. Standard Bond ball mill test procedure were carried out on crushed (-3.35 mm / 6 mesh) material at different
Read More2021-11-30 Only relatively small quantities of sample are required and can be re-used to conduct Bond ball work index tests. The results from conducting the SMC Test® are used to determine the so-called drop-weight index (DWi) which is a measure of the strength of the rock as well as the comminution indices Mia, Mih and Mic.
Read More2013-7-15 In the standard A-C closed circuit ball mill grindability test the work index is found from. where Pi is the opening in microns of the sieve mesh tested, and Gbp is the net grams of mesh undersize produced per revolution of the 12″ x 12″ test ball mill.
Read More2014-10-1 Test data from the Bond ball mill work index test is used to calculate the fine grinding index (M ib). The M ia and M ib indices are used to calculate specific energy for the coarse (W a) and fine (W b) components of the total grinding specific energy at the pinion (W T) according to Equation 7. W i = 4.K.M i.[Pf(P)-Ff(F)] (6) W
Read MoreThe 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.
Read More2020-3-24 the relative grindability of different ores in ball milling (Bond, 1961 and Rowland and Kjos, 1980) To use the Bond ball mill work index to determine the ball mill specific energy required for a particular grinding task, the Bond equation must be used and the various relevant efficiency factors applied. In
Read MoreThe 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
Read More2018-12-7 The test work program was carried out on those five ore samples obtained from the copper-porphyry orebodies. Total of 38 Bond work index tests, including duplicates, were done. Standard Bond ball mill test procedure were carried out on crushed (
Read More2021-11-30 Only relatively small quantities of sample are required and can be re-used to conduct Bond ball work index tests. The results from conducting the SMC Test® are used to determine the so-called drop-weight index (DWi) which is a measure of the strength of the rock as well as the comminution indices Mia, Mih and Mic.
Read More2017-1-7 The Work Index is used when determining the size of the mill and grinding power required to produce the required ore throughput in a ball mill. 2. Procedure 2.1. Bond Ball Mill Grindability The sample was crushed to 100% passing 6 mesh (3.35mm), from this a 700 cc volume was measured and weighed to be used as feed for the Bond Mill.
Read More2013-7-15 In the standard A-C closed circuit ball mill grindability test the work index is found from. where Pi is the opening in microns of the sieve mesh tested, and Gbp is the net grams of mesh undersize produced per revolution of the 12″
Read More2014-10-1 Test data from the Bond ball mill work index test is used to calculate the fine grinding index (M ib). The M ia and M ib indices are used to calculate specific energy for the coarse (W a) and fine (W b) components of the total grinding specific energy at the pinion (W T) according to Equation 7. W i = 4.K.M i.[Pf(P)-Ff(F)] (6) W
Read More2015-6-16 The test determines the Bond Impact Work Index which is used with Bond’s Third Theory of Comminution to calculate net power requirements when sizing crushers*. It is also used to determine the required open-side settings
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