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ball mill

ball mill

Processing capacity:140-367t/h

Feeding size:≤14mm

Appliable Materials: new-type building material,fertilizer,ore dressing of ferrous metal,glass ceramics,iron ore,glass etc. All grindable materials, various metal ores, non-metallic ores, non-flammable and explosive materials

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  • The grinding jar for the bond index rod mill is 12 x 24 in size and has a waveshaped designat least 15 to 20 kg sample material is required to simulate a closed grinding circuit in a ball or rod millthe rod mill work index rwi is used for particle size determination in a size range from 25 mm down to 21 mm whereas ball mill work

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  • Theball mill work indexlaboratory test is conducted by grinding an ore sample prepared to 100 passing 336 mm 6 mesh to productsizein the range of 45150 m 325100 mesh thus determining theball mill work indexwi b or bwi the work index calculations across a narrowsizerange are conducted using the appropriate laboratory work index determination for the materialsize

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  • Thebond indexconforming ball charge consists of 43 x 145balls67 x 117balls10 x 1balls71 x 075balls 94 x 061ballsthe optimum number of grindingballsis 285 however the ball diameters vary due to wear therefore the total ball number should be adjusted from time to time to ensure a total mass of 20125 grams the grinding jar of thebond index ball millmeasures

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  • Mar 01 1983 makeup feedmillintroduction thebond method1 2 forsizingtumblingball millshas been used successfully for many years on the other hand a more detailedmethodof analysis of the grinding process has been developed in recent years 3 11 based on mathematical models of the process

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  • The bond work index wi is defined in a bond ball mill on the samples of standard size 3327 0 mm

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  • The grinding jar for thebond indexrodmillis 12 x 24 insizeand has a waveshaped design at least 15 to 20 kg sample material is required to simulate a closed grinding circuit in aballor rodmill the rodmill work indexrwi is used for particlesizedetermination in asizerange from 25 mm down to 21 mm whereasball mill work

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  • Themethodis used tosizeacement ball mill efficiency correction factors are applied with thebondequation themethodis valid both for clinker grinding and for raw materials grinding thismethodonly gives a rough and initial idea forsizingacement ball mill

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  • Bond work indexdetermination with a sepor batchball millbond ball mill work indexdetermination grinding dear all have a good day i am trying to determineball mill work indexfor a very soft if i follow bonds procedure to do experiment not able to determine the following is the data of ore sample f mic mesh of grind mic mic in feed in this case if the sample is gri get price

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  • 3index bond millof mining industry labtech outotec merganmethodis faster than thebond ball milltest and requires less sample material however the merganmethodgives grinding energy consumption which can be used to calculate merganwork index but this merganwork indexdiffers from thebond work index

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  • In practice it is possible to find materials of nonstandardsizethat are finer than 3327 mmin thiswork a procedure for the calculation of thebond work indexis suggested for cases when the

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  • Correction ofbond ball mill work indextest for closing meshsizesit is commonly known that one must run thebond ball mill work indextest such you pick a closing mesh to give a p80 close to desired grindsize

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  • Dec 12 2016 the basic parameters used inball milldesign power calculations rodmillor any tumblingmill sizingare material to be ground characteristicsbond work index

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  • Bond ball millgrindability test thebond ball mill work indexbbwi test is carried out in a standardisedball millwith a predefined media and ore charge thework indexcalculated from the testing can be used in the design and analysis ofball millcircuits the test requires a minimum of 10kg of sample that has been stagecrushed to 100

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  • Grindability indextestmethod procedure 911metallurgist the proposedgrindabilitytest uses thebondstandard testmilland a energy required for grinding comparison of plant data estimates based on thebond worksizeto another it can be expressed in different ways the best known being the in a laboratory hatchball mill and the times required for each material

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  • Abond ball mill work indextest is a standard test for determining theball mill work indexof a sample of ore it was developed by fredbondin 1952 and modified in 1961 jkmrc co 2006thisindexis widely used in the mineral industry for comparing the resistance of different materials toballmilling for estimating the energy required

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  • Mar 01 2003 w i 11 445 p i 023 g bg 082 10 p 80 10 f 80 w i is thework indexkwht p i screensizeat which the test is performed 106 m g bgbonds standardball millgrindability net weight ofball millproduct passing sievesizep i produced permillrevolution grev p 80 sieve opening which 80 of the product passes m

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  • Similar to a comparativework index this test is an open circuit dry batch grindability test run in the standardbond ball millfor a set time it can be used at meshsizesfrom 65 to 200 mesh normally 100 mesh the test requires calibration against the standardbond ball mill work indextest to estimate thework index

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  • Numerically thework indexis the energy required in kwht to reduce a given material from theoretically infinite feedsizeto 80 passing 100 microns thework indexof a particular material is determined in the laboratory by conducting the standardbondgrindability testbonddeveloped separate tests for the rodmilland theball mill

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  • Equations for power draft capacity andworkinput for predicting the performance of industrial grindingmillsare derived based on torque measurements using a laboratory instrumentedmill these derivations are based on mechanical principles and on the firstorder kinetics of the grinding process rittingers kicks andbonds laws expressworkinput aswork indexwi

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  • Determining thebond work indexis a standardizedmethodfor characterizing the comminution performance of mineral samples cemtec uses thismethodfor designing rod andball mills the comminution performance is just like the desired comminution step and the production capacity crucial for determining the requiredmill size

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  • Jan 01 2016 a change in transfersizecan be accommodated between 04 and 35 mm by an adjustment using thebond ball mill work index starkey found that there was no observable difference in the energy consumption in a sagmillorball millin thissizerange thismethodof estimatingmillpower requirement has been successful in recent years 346

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  • Chinabond work indexfor rodmillmanufacturers and introduction thebond work indexforball millis a special equipment for testingbond ball mill work indexsimple lab test can chooseball millby powermethodor judge the effects of material properties change to theballmilling process or the operation condition of crusher by using this equipment

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  • Jul 30 2020 an improvedmethodusing less mass compared to thebond ball mill work indextest the jkbond ball milljkbbm test is a locked cycle grindability test conducted using a standard laboratorybond ball millwith the same steelballcharge and material feedsize100 passing 335 mm as thebond ball mill work indextest

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  • Themethodrequires all the elements of theball mill work indextest to be filled inball millwi test closing screensize umclosing mball millwi test productsize p 80 mball millwi test feedsize f 80 mball millwi grams per revolution at test conclusion gpr required parameters f 80 m is the 80 passingsizeof the

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