Kinetic grinding test approach to estimate the ball mill work index 345 Kinetic grinding Exactly 700 cm3 of 100% passing 335 mm material from each sample was progressively grounded in periods of 033, 1, 2, 4, and 8 minut

Sales OnlineOct 24, 2018· The Work Index is a fitted coefficient to Bond's equation given in the picture above The work index can either be measured in the laboratory (the Bond ball mill work index determination is a.

Sales OnlineTypical Mill Circuit Represented by the Bond Ball Mill Test The procedure for the work index test bases the BW i value on the calculation of new fines generated in the test This means that the fraction of fines in the feed should not influence the test result significantly, if at all

Sales OnlineThe 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

Sales Online2 Calculate the Standard Circuit Bond Work Index (WiSTD) for the material being processed (equation 3) Wtotal WiSTD= –––––––––––– (3) 10 10 (––––－––––) √￣P80 √￣F80 The Bond Standard Circuit is the “conventional” crush-ing-rod-ball ,

Sales OnlineHowever, in this situation the ball mill has to supply this energy and it has a different (higher) work index than the crusher (ie the ball mill is less energy efficient than a crusher and has to input more energy to do the same amount of size reduction) Hence from equation 7, to crush to the ball mill circuit feed size (x 2

Sales OnlineThe work index obtained through the standard procedure was Wi = 1062 (kwh/ t)1 which compares quite well with the value calculated by the simplified method SELECTED APPLICATION EXAMPLES Different illustrative examples on the application of the simplified method are presented in this section

Sales OnlineJun 06, 2015· The Work Index (BWi) is calculated according to Fred Bond’s Equation Bond Work Index for Testing Procedure Cleaning and Storing of Ball ,

Sales OnlineThe 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) required to reduce the material of one.

Sales OnlineDec 12, 2016· Ball 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 ,

Sales OnlineMay 01, 2021· A Bond Work index mill ball charge and closing screen product size distributions for grinding crystalline grains Int J Miner Process , 165 ( 2017 ) , pp 8 - 14 , 101016/jminpro201705011

Sales OnlineBall Mill Batch Process The mill dimensions, (D × L), are 0204 × 0158 m and it is loaded with 65 kg steel balls between 25 and 32 mm in diameter The mill rotates on rolls and its frequency is , A New Approach to the Calculation of Work Index and the ,

Sales Onlinework indices for the AG/SAG mill and ball mill can be re-organised as [7] and [8], where B’Wio and A’Wio are the corrected operating work indices and WAG/SAG, WBM are the respective power draw of AG/SAG and ball mills Note that the ball mill operating work index is applied only on the portion that needs the additional grinding (Q2).

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