2015-12-16work indices for the agsag mill and ball mill can be re-organised as 7 and 8, where bwio and awio are the corrected operating work indices and wagsag, wbm are the respective power draw of agsag and ball millsote that the ball mill operating work index is applied only on the portion that needs the additional grinding q2,.
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2015-12-16work indices for the agsag mill and ball mill can be re-organised as 7 and 8, where bwio and awio are the corrected operating work indices and wagsag, wbm are the respective power draw of agsag and ball millsote that the ball mill operating work index is applied only on the portion that needs the additional grinding q2,.
Get PriceOperating work index is not the specific energy consumptionct 24, 2018 the work index can either be measured in the laboratory the bond ball mill work index determination is a common example or it can be calculated from the operating performance of a milling et price.
Get Price2016-1-10work index rwi for finer particles ball milling work index bwi tablehese indexes are readily obtained using the special-purpose laboratory equipment figinding the total specific energy consumption in the wet autogenous mill central discharge ball mill circuit wam cdbm in the framework of the discussed method, total.
Get PriceCalculation of energy required for grinding in a ball millntinerrocess25 41-46he bond work index, wi, as an indicator of the grindability of raw materials is not a material constant but rather it changes with change of size of the grinding product.
Get PriceThe ball mill work index laboratory test is conducted by grinding an ore sample prepared to 100 passing 3 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 bwihe work index calculations across a narrow size range are conducted using the appropriate laboratory work.
Get Price2018-2-20rod mill work index has not been de ned as yethe ball mill work index is con rmed at 16 kwhthe operating work index, though, is in the range of 21 kwht to 25 kwht showing high inef ciencyhis raises the point that, in some cases, the bond ef4 oversize factor calculation is not suf cient to compensate.
Get PriceBall mill ball size calculation - namesprojectsouthflorida all mill power calculation example a wet grinding ball mill in closed circuit is to be fed 100 tph of a material with a work index of 15 and a size distribution of 80 passing inch 6350 microns.
Get Price2014-10-1submitted to the bond ball mill work index testhe number of sag mill revolutions required to grind the material to a p 80 of 1mm is used to predict agsag specific energy using quation 4orrection e factors for feed size and pebble ing are applied to.
Get Price2019-11-10the bond ball mill work index is a measure of the resistance of the material to grinding in a ball millt can be used to determine the grinding power required for a given throughput of material under ball mill grinding conditionst is a locked cycle test conducted in closed circuit with a laboratory screen.
Get Price2013-12-24index by calculation is almost matching with measured bonds work indexhe bonds work index of the above rock samples calculated from the hardgrove index value has shown a variation from 7to 10 kwhsh a correlation is found between the friability value and work index.
Get PriceBall mill work index calculation xls alculate a mills operating work index 911 metallurgist use this online formula to calculate a ball mill, rod mill or sag mill operating work indexased on fred bonds work you can estimate the energy used into your grinding circuit.
Get PriceBond formula for the grinding balls size calculation october 19, 2017 archive 0 he enterprises consumers grinding media have a question about right choise the grinding ball size diameter for the mill in order to achieve the required grinding quality.
Get Price2013-5-6ball mill work index 13 kwht had sag hardness as low as 1kwht in one case aurora and up to 34 kwht in the other case where nico data was reported in january 2010 at the cmp in ottawa this proved that a bond bm wi alone must never be used for designing a sag mill.
Get PriceComparing of ball mill design using bond work index according to fred bond in his paper crushing grinding calculation part i, where he the bond work index bwi, the work index is the.
Get Price2018-2-20mill ball mill closed circuit crushing to 16 mm open circuit 8 diaod mill to 1 mm closed circuit 8 diaall mill to p80 um the ore test work index circuit operating work index 9 the standard bond circuit coarse ore bins fine ore bins screen crushing screen classification rod mill ball mill this is the reference basis for all work.
Get Price2015-4-16mill was measured using a purpose built power meter to facilitate the calculation of specific grinding energyesults table i shows the bond ball mill work index obtained for the ore samples as well as the iron and silica content in concentrate and tail after limshe concentrate weight recovery was in the order of 5060urthermore it may be.
Get Price2019-11-2a ball mill, a type of grinder, is a cylindrical device used in grinding or mixing materials like ores, chemicals, ceramic raw materials and paintsll mills rotate around a horizontal axis, partially filled with the material to be ground plus the grinding mediumifferent materials are used as media, including ceramic balls, flint pebbles and stainless steel balls.
Get Price2007-9-5coefficient 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.
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