20161212Ball 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 Live Chat Ball Mill For Coal Powder For Power Plant Flow Diagram
20161212Ball 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 Live Chat Ball Mill For Coal Powder For Power Plant Flow Diagram
Get PriceAug 15 2021 The crusher product PSD was fed to the grinding circuit and A and b values were entered to the breakage function of the SAG model The ball mill model requires a Bond Work Index BWi value to represent rock breakage inside the machine and the hydrocyclone model requires entering the number of parallel units
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Get Pricebond work index test ball mill 911metallurgist 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
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Get PriceGrinding Operation an overview ScienceDirect Topics Measuring the change in ball mass 3 SG of the mineral 4 work Index of the mineral Bond 14 A mill ready to start a grinding operation could be around 150 t in dead weight Thus the initial torque on the mill shaft is very high and an electric drive motor and drive is designed to cope with it
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Get PriceIf you have done proper test work and assumed your Work index is as you provided above quickly I can estimate that your SAG throughput is around 517 th and if the total of mill charge is 25 of the total mill volume then you can assume the following assumption ie mass proportion of grinding body to ore be 15 steel balls and 10 ore 1
Get PriceIntroduction where W is the specic energy for grinding in kW hton Wi is the work index in kW hton P80 is the mill product d80 Grinding process mathematical modelling and com size in lm and F80 is the mill feed d80 size lm puter simulation particularly in mineral industry had been Given W Wi and F80 one can calculate the product size
Get PriceJan 07 2015 2 Shape size and weight of the grinding media 3 Friction between the lining and the grinding media 4 Internal friction mill charge Figure Grinding media 441 Grinding Ball Charge in Mills According to Levenson the optimum grinding ball charge should be r 016D The degree of ball charge varies with in the limit of 25 and 45
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Get PriceLaboratory studies indicated the differences in the grinding properties work index breakage rate etc and liberation sizes of these ores smooth operation of the ball mill was observed
Get PriceMeasurement of net ball volume in a SAG or ball mill can also be done by completing a grind out and remeasuring the volume with MillMapper These volumes are accurate to the nearest 1 and account for change in internal mill volume due to liner wear and also account for the volume taken up by the feed and discharge cone which are not accounted for by the manual estimates I mentioned before
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Get PriceProduct Description QM3 Measuring Grinding Work Index Lab Ball Mill for ceramics chemical industrial laboratory Grinding work index BOND referring to the grindability index of cement raw materials and mixtures is used to indicate the grinding difficulty of the material It is measured according to the principle that to calculate the grinding work index based on output of each revolution of the
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Get PriceThe Bond Ball Mill Work Index test has been an industry standard for more than 40 years It hasworked well and energy requirements are calculated as motor output or pinion energy Bond did thisbecause there were so many different styles of drives in his data base that the drive efficiency had to beremoved to get at the actual grinding energy Bond tests are available at any well equipped ore
Get PriceThe Bond Work Index W of an ore is determined by Bond Grindability Tests that grinding in a closed circuit at 250 circulating load in a Bond ball mill Get Price QM3 Measuring Grinding Work Index Ball Mill Machine View ball
Get PriceThis grindability test is conducted in a Bond ball mill of D L 0304803048 m dimensions at the speed of 70 rpm The mill is loaded with 21125 kg standard sized balls and 700 cm 3 of
Get PriceWhere Wi is the work index W is the work input motor output and F and P are the 80 passing sizes of the feed and product respectively in micrometers This relationship between feed and product energies and the calculation by difference of the required grinding energy is the basis for the two Bond Rod and Ball Mill Work Index Tests Both were
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