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Get QuoteBond work index formulaequation basic equationssize distribution and exposure ratioequations for work index variationswork index and crack energy the basic work index equation isw 10 wip 10 wif1where w is the work input required in kilowatt hours per short ton to grind from 80 passing f microns to 80 passing p microns and wi is the work index.
Inquiry OnlineA modified work index crushability test device has been used to determine the embodied energy of aggregate resources the initial research has focused on carboniferous limestone as worked in central consultants or experts working for equipment suppliers 2006 and the bond crushing work
Aug 01 2010 can practically be used for the crushability estimation of rocks 6 conclusions the crushability of twentyfour different rock types were determined and correlated with the corresponding results from the impact strength test it was found that there is a strong inverse linear relation between the crushability index and the impact strength
Bond index of limestone onemine mining and considering the bond crushability index of limestone 128 kwhtonne the bond get p more service online chat online causes of poor grindability in ball mill limestone crushing sun bond grindability index of limestone apr 17 2013 ball mill bond work index for limestone ore beneficiation
Bond work index an overview sciencedirect topics the 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 45150 m 325100 mesh thus determining the ball mill work index wi b or
Bond work index formulaequation basic equationssize distribution and exposure ratioequations for work index variationswork index and crack energy the basic work index equation isw 10 wi√p – 10 wi√f1where w is the work input required in kilowatt hours per short ton to grind from 80 passing f microns to 80 passing p microns and wi is the work index or the grinding resistance
Bond work index formulaequation basic equationssize distribution and exposure ratioequations for work index variationswork index and crack energy the basic work index equation isw 10 wip 10 wif1where w is the work input required in kilowatt hours per short ton to grind from 80 passing f microns to 80 passing p microns and wi is the work index
Bondwork index wi hardgrove grindability index hgi zeisel specific performed in water liquor or acid and often at high temperature eg bauxite grinding modeling of crushing and grinding the dimensioning of mills and the testingbond ball mill work index reduction after hpgr ore
Crushability index wi crushability workindex for iron ore smocthumpamonin 247 onlineow to bond index in rock crusher iron ore crusher equipment how to bond index in rock crusher description bond crushability work index crushability and bond work index relation highfrequency screen is a good choice for screening and grading the fine
Crushability tests french abrasion gives an abrasion and crushability index mainly used to estimate hammer wear in the impactor application dynamic fragmentation conducted for impactor application measures the friability of the material dynamic fragmentation number will indicate if the impactor is feasible for a particular
Crushability workindex for iron ore 20151003 crusher selection criteria for coal and iron ore punjab pakistan gold ore ball mill and crusher for sale in lahore crusher selection criteria for coalget price selection of ball milltiet type selection of ball mill is important which could affect theoperation effciency directlywe selection criteria of hammers screen selection for
Features crushing principle the patented design of feeding material flow keeps the rock on rock and rock on iron chamber meet various requirement of sand making quarry shaping and powder making etc with less operation cost less wearing cost and higher
Figure 4 bond crushing work index v unconfined compressive strength highlighting three rock types figure 4 displays wi c and ucs values separated by the major rock types from a single african mine the three rock types do show a mild correlation between crushing work index and ucs r values between 01 and 04 get
For hgi wi and specific rate of breakage sahoo et al 2011 the bonds grindability test wi can be used to determine the work index of any type of ore or material but the process is tedious and long time consumption the laboratory determination of hardgrove grindability index hgi is less time consuming than that of the
Gc series gyratory crushers are used in the primary crushing of various rocks with features as follows large capacity higher crushing efficiency larger reduction ratio consistent product size and lower energy design which is fit for the application of larger
Grindability index test method amp procedure 911 metallurgist the bond work index is determined by a standardized procedure in which the material is crushed in stages to finer than 6 mesh 335 mm and ground under specified conditions in a laboratory ball mill linnstunt lizenithne 16 illll get
Impactors wi is an indication of hardness cone crusher rate the material to determine the duty of the crusher bench scale and pilot plant design for comminution circuits impact crushability 21 crushability tests results are in the form of abrasion index and chemical makeup of the material tests are used to determine whether an impactor or
Jan 31 2017 uniaxial compressive strength ucs brazilian tensile strength bts and brittleness are widely used in rock engineering applications however preparing the test samples for the standard tests may not always be possible for weak or soft rocks on the other hand only rock fragments may be available to estimate the rock strength in some cases such as
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Material’s crushability wi the degree of contamination and moisture in the feed the type of jaw plates fitted and the condition of the manganese capacity mtph stph product curves the figure shows product distribution curves which are representative for mediumhard material impact work index wi 16 with approx 75 of the
Sag mill and ratio of bond ball and rod index construction waste crusher construction waste refers to the construction construction units or individuals to construct lay or demolish all kinds of buildings structures and pipe networks etc and generate the spoil spoil waste residual mud and other wastes generated during the repairing
Sep 01 2017 in this way higher bond index for a material implies that it has lower grindability the third theory of bond is commonly written as eq 1 w 10 wi 1 p 801 f 80 where w is the input energy in terms of kwhton wi is the bond work index in kwhton and p 80 and f 80 are the 80 passing sizes of product and feed in micrometers in this
Strength crushability index abrasive index and work index this work investigates the variation in the bwi profile with increasing pit depths and design wi p f where w i is the work index p 1 is the screen test size in microns gbp is the net grams undersize per revolution p 2 is the 80 product passing size
The traditional impact work index wi proposed by fred bond over 60 year ago is still used today in characterizing material crushability however more recent measures namely the point load
Use of rock mechanical properties to predict the bond crushing index the crushing energy in mineral processing industry is usually determined by empirical bonds index for rocks it appears that the the bond crushability index of these rocks were experi mentally evaluated where wi is the bond work
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Impact work index wi 16 with approx 70 of the product smaller than the crusher’s closed side setting css the shape of the product curve and the proportion of the product which will be smaller than the css depend on the characteristics of the feed material operation with common rock materials with different