2019-12-17w is the work index measured in a laboratory ball mill kilowatt-hours per metric or short ton p 80 is the mill circuit product size in micrometers f 80 is the mill circuit feed size in micrometersod mill rotating drum causes friction and attrition between steel rods and ore particles.
For p80s finer than 75 m, the levin test, a modified bond ball mill work index test, may be used to predict grinding performanceignature plots no general work index formula governing energy use over a range of conditions, like the bond equation for intermediate.
2013-11-4the bond work index is one practical methodegards, tedeply postssteel ball must be dropped from to break a clinker nodulei have procedrue for clinker grindability test in excel formatef u insert the require values it will give the bonds work indexf u r interested please give your email id so that i can mail u.
2015-1-21bwi-bond ball mill work index kwht 19195 notes 1he ucs results indicated that the samples range from strong to very stronghe bond cwi results indicated the crushability of the samples is mediumhe smc results indicated that grinding of the samples by sag milling of the samples is hardhe bond ai results indicated.
One factor that is often inconsistently defined in these studies is the change in the bond ball work index bbwihe bond test can overestimate the reduction in ball milling energy requirements for hpgr products, not due to a change in the breakage characteristics of the particles, but because the bond test feed for a sample crushed in a hpgr.
2017-8-8figure 4 a standard laboratory bond ball mill 6 kingman, s, the bond mill test was developed as a method to classify an ore based on the energy required to achieve a given size reduction the work index represents the energy required to reduce ore from infinite grain size to a.
2018-4-712 determining the bond ball mill work index with fewer cycles darcia university of queensland, australia, gallantyne jkmrc, australia and hiang jktech pty ltd, australia 12 development of a laboratory test for regrinding ball mill or stirred mill circuits.
Sagdesign testing provides sag pinion energy grindability in kwht to within 5 from 152 to 1mm, and bond ball mill work index on sag ground ore, from the sag test on the same sampletarkey associates uses the patented sagdesign technology.
Minerals Testing And Research Center Mineralogical And
2019-4-2bond abrasion work index bond ballrod mill indices hpgr vxp licensed to conduct this test work at our facility, data is interpreted and results reported by the parent companyinerals testing and research center 7 p150 high-pressure grinding roll effective method to recover metals from an oreab stirred vessels, bottle roll, and.
2019-11-28jktech laboratory services bond ball mill index test brmwi a bond ball mill index test bbmwi is a standard test for determining the ball mill work index of a sample of orehe bbmwi is a measure of the resistance of the material to crushing and grindingt can be used to determineet price.
2008-10-30determination of grindability using hardgrove method consists in simple test performancespecially for these reasons mutual correlation between the results obtained using hardgrove method and results of tests by bondor the calculation of work index wi from hgi values bond 1954 proposed by the following formula 88.
Grinding In Ball Mills Modeling And Process Control
2012-7-10coefficient of reduction, the work index of the material, the mill shaft power and the specific gravity of the materialhese parameters are thoroughly studied in 4, 5 and an empirical relation is suggested expressing the mill capacity as a ratio of the mill shaft power and the energy consumed in the grinding process.
2019-7-16test and does not yet reflect the overall cleaner circuit recovery when a closed-circuit flotation circuit is heavy liquid separation was performed as an alternative beneficiation method to ore sortingeparations were performed at sg 3, 3, 2, 2, and 2 on 600m materialbond ball mill work index, bond abrasion index.
The guideline reviews the data required for the analysis, including hardness characterization data generated from the smc test and bond ball mill test work index, presents the morrell equations and their applications, and provides a worked example.
2014-11-18geometallurgical mapping and mine modelling comminution studies la colosa case study, amira p843a by paula andrea montoya lopera codes arc centre of excellence in ore deposit submitted in fulfilment of the requirements for the master of science in geology university of tasmania february, 2014.
Bond work index procedure and methodhis 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 sampleshese equation application methods are used to process 12 ore samples in a ball mill using a standard ball chargeelow describes in general terms the bond.
Index test, the bond rod mill work index test and the bond ball mill work index testead more a quick method for bond work index approximate value he bond work index is a measure of ore resistance to crushing and grinding and is determined using the bond grindability testts value constitutes ore characteristic and is used for industrial.
2019-12-13bond ball mill index test jktech 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 for the bond ball.
The bond ball mill work index test is thought to be additive because of its units of energy nevertheless, experimental blending results show a non-additive behavior 18 the spir value is known not to be an additive parameter, however errors introduced by block kriging are not thought to be significant.