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Get PriceMar 14, 2015· Calculate a Mill’s Operating Work Index Use this online formula to calculate a Ball Mill, Rod Mill or SAG Mill Operating Work Index Based on Fred Bond’s work you can estimate the energy used into your grinding circuit This is the most accurate and informative method, but much of the data necessary for its application is not yet available

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Get PriceThe Bond Ball Mill Work Index (BBWi) test is carried out in a standardised ball mill with a pre-defined media and ore charge The Work Index calculated from the testing can be used in the design and analysis of ball mill circuits The test requires a minimum of 10kg of sample that has been stage-crushed to 100% passing size of

Get Pricehs code for ball mill for measuring grinding work index The Bond Ball Mill Work Index is a measure of the resistance of the material to grinding in a ball mill It can be used to determine the grinding power required for a given throughput of material under ball mill grinding conditions It is a locked cycle test conducted in closed circuit with .

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Get PriceWioACT Actual Operating Bond Work Index determined from measurements on the circuit (kWh/t) WiRM Bond Rod Mill Test Work Index (kWh/t) WiSTD Standard Circuit Bond Work Index (expected or designed) used for circuit design Specific energy requirement at the drive pinions 3KEYWORDS Work Index, Work Index Efficiency, Bond Work Index testing

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Get Priceothers in Allis-Chalmers have developed a grinding test in a ball mill in a closed cycle until the establishment of stable recirculating load (Maxson et al, 1933) The Bond work index is a parameter which represents a measure of an ore resistance to grinding Numerically, the work index represents the energy (kWh/sht)

Get PriceDec 04, 2020· The laboratory procedure for running a Bond ball mill work index test requires that the operator choose a closing screen sieve size The instruction is to choose a ,

Get PriceBall Mill Wio, BWio 86 Circuit Wio, OWio 146 Bond Ball Mill Work Index, BWi, kWh/t 134 Bond Rod Mill Work Index, RWi, kWh/t 181 Table 1 Example of AG/SAG Ball Mill Circuit Wio Calculations [1] [2] ABstrAct Optimum use of power in grinding, both in terms of grinding efficiency and use of installed capital, can have a large effect on .

Get PriceOct 24, 2018· However, Bond Work Indeces are related to the type of equipment to be used (rod mill, ball mill, SAG uses Drop Ball parameter-Kwhr/m3-, so it is more complex than just specific energy consumption .

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Get PriceJul 30, 2020· The Bond Ball Mill Work Index is a measure of the resistance of the material to grinding in a ball mill It can be used to determine the grinding power required for a given throughput of material under ball mill grinding conditions It is a 'locked cycle' test conducted in closed circuit with a laboratory screen

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Get PriceThe ball mill work index laboratory test is conducted by grinding an ore sample prepared to 100% passing 336 mm (6 mesh) to product size in the range of 45-150 µm (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 .

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Get PriceAug 12, 2021· Hence, ball mills such as planetary ball mills usually work in cyclic mode to avoid elevated temperatur For instance, Schneider et al reported that samples were partly burned when planetary ball-milled for 60 min with a cyclic mode of ,

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