The paper by Angove & Dunne (1997) reports a standard deviation in crushing work index tests across laboratories as 4.5. The laboratory CWi value of 27.4 (metric) is almost within 4.5 units of the 22.4 value I calculated, so what you are observing is probably the natural variation in the crushing test.
Get QuoteJun 16, 2015· The test determines the Bond Impact Work Index which is used with Bondβs Third Theory of Comminution to calculate net power requirements when sizing crushers*. It is also used to determine the required open-side settings (jaw crushers and gyratory crushers) or closed-side settings (cone crushers) for a given product size.P80 = 25400 x Oss x (0.04Wi + 0.40)
Get QuoteApr 23, 2020nbsp018332the bond work index of the rock. this number will be used to calculate the power required to produce the final product. calcpower usedpower calc the calculated power to produce the crusher product. power 10.0 sq bwi 1.0sqrtp 80 1.0sqrtf 80 where sq is the solid mass flowrate bwi is the bond work index p80 and f80 are in m.
Get QuoteHow To Calculate Crusher Work Index Evert Bioenergie. Crusher work index infographicsdesignernl calculate crusher power from work index chapter 3 particle technology size reduction calculate crusher power from work index,an ideal crusher would 1 have a large capacity 2 require a small power input per unit of product and 3 yield a, the work index, wi, is defined as the gross energy
Get QuoteHow To Calculate Crusher Work Index. Bond crusher work index pendulum test,the bond work index is defined as the kilowatt-hours per short ton required to break from infinite size to a product size of passing 100 If the breakage. chat online; how To bond index In rock crusher. bond crusher work index pendulum test crusher bond work index Of green stone rock.
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Get Quote= 1.0 for all crushers operating in closed circuit with a classifying screen. If the crusher is in open circuit, eg pebble crusher in a AG/SAG circuit, K. 2. takes the value of 1.19. x. 1 = P. 80. in microns of the circuit feed . x. 2 = P. 80. in microns of the circuit product . M. ic = Crushing ore work index and is provided directly by SMC
Get Quotebond 26 2339 3 s rod mill for work index. 19.0 MINERAL RESOURCE AND . Table 18.3: Bond Crushing work index Results . power calculation of impact coal crusher based on bond work
Get QuoteThe Bond Low-Energy Impact test can be used to determine the Crusher Work index (CWi), also known as the Impact Work Index. The test determines the impact energy at which a specimen fails and allows approximation of net power requirements for sizing crushers. The open and closed sized settings for given product sizes can also be determined.
Get QuoteFeb 25, 2015· Bond Work Index π€ = 10ππ 1 π β 1 π W = Power required in KWH to crush 1 short tonne ( 2000 pound) of material Wi is the work index of the material p is the 80 % passing size of the product f is the 80 % passing size of the feed 2/25/2015 6:58:05 AM 23 24.
Get QuoteThe 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 short ton from a theoretically infinite feed size to size at which 80 percent of material passes through sieve with square aperture100
Get Quote1. Calculate the Actual Operating Bond Work Index of the grinding circuit. β’ Estimate the F80 and P80. β’ Calculate the work or specific energy input from the size reduction equipment power and circuit tonnage (equation 1). Auxiliary equipment power is excluded. P W = βββ (1) T
Get QuoteThe test determines the Bond Impact Work Index which is used with Bondβs Third Theory of Comminution to calculate net power requirements when sizing crushers*. It is also used to determine the required open-side settings (jaw crushers and gyratory crushers) or closed-side settings (cone crushers) for a given product size.
Get QuoteThe Bond work index is not solely a material constant but is influenced by the grinding conditions. For example, the finer the grind size desired, the higher is the kWh/t required to grind to that size. Magdalinovic [38] measured the Bond work index of three ore types using different test screen sizes. He produced a correlation between the mass of test screen undersize per revolution, G, and
Get QuoteDrop Weight Index (DWi) and the coarse ore grinding index (M ia). Test data from the Bond ball mill work index test is used to calculate the fine grinding index (M ib). The M ia and M ib indices are used to calculate specific energy for the coarse (W a) and fine (W b) components of the total grinding specific energy at the pinion (W
Get QuoteHow much material do you need? get the answer here! Select product to begin calculating amount. 1. Select product. Base material. Decorative Stones. Driveway Gravel. Granite Stone.
Get Quotetoothed roll crusher throughput calculation. Design Fabrication and Testing of a Double Roll Crusher. Design and production of an indigenous roll crusher from locally available materials for low hardness rocks was carried out in this work The throughput capacity of the machine was 143tonnes/hour The theoretical efficiency of the double roll crusher when crushing limestone was 60 while that of...
Get QuoteHow to Size a Ball Mill -Design Calculator Formula. 15/05/2015 In general, therefore, the required mill power is calculated using the following equation. where n is the number of efficiency factors, EFi, used and fo is the feed rate of new ore to the mill.
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