The Bond crushing work index test (sometimes called the "impact work index" test) is noisy, and the difference you observed is perfectly reasonable. 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

Get PriceSizing a crusher can be done reliably calculated thanks to the Impact/Crushing Work Index and the testwork research done by Fred Chester Bond and his 1952 paper. According to Bond’s Third Theory of Comminution, the work/energy input is proportional to the new crack tip length created during particle breakage and equivalent to the work represented by the product the feed.

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Get PriceCrusher Work Calculate . bond work index cone crusher . bond work index cone crusher. formula for calculation of impact crusher. Bond Impact Crushing Work Index Procedure and Table ofSizing a crusher can be done reliably calculated thanks to the Impact/Crushing Work Index and the testwork research done by Fred Chester Bond and hispaper. Learn

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Get PriceThe test determines the Bond Impact Work Index which is used with Bond’s 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 PriceA quick method for the Bond work index approximate value determination, which is based on the first order grinding kinetics, is presented in this paper. Comparative experiments for the Bond work

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Get PriceA quick method for the Bond work index approximate value determination, which is based on the first order grinding kinetics, is presented in this paper. Comparative experiments for the Bond work

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Get PriceHowhow To Calculate Crusher Work Index; Crushing work index Calculation Crushing, Crushing, Screening & Conveying robertd 2017-04 and the variation between the laboratory test and your observation of the operating crusher is within the normal range of other Work index (if we wont calculate it) and

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Get Price25/02/2015· Bond Work Index 𝑤 = 10𝑊𝑖 1 𝑝 − 1 𝑓 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 PriceHowhow To Calculate Crusher Work Index; Crushing work index Calculation Crushing, Crushing, Screening & Conveying robertd 2017-04 and the variation between the laboratory test and your observation of the operating crusher is within the normal range of other Work index (if we wont calculate it) and

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Get PriceCrushers may be used to reduce the size, or change the form, of waste materials so they can be more easily disposed of or recycled, or to reduce the size of a solid mix of raw materials (as in rock ore), so that pieces of different composition can be differentiated. Get Price; To Calculate Crusher Work Index. 8. To Provide Coal For Coke Ovens

Get Pricesubjected to blasting by one and by two pieces of detonating cord (1996). For taconite, a substantial reduction in work index was calculated. The reduction was greater for the two detonating cord case than for the one cord test. We have used data about core dimensions and the detonating cord used, found in their paper, to calculate a powder factor.

Get Priceindex and Bond work index. The Bond work index is regarded as one of the crushing resistance; it can therefore be presumed that the Bond work index is correlated to the mechanical properties of materials [4]. Literature review on impact crusher performance in relation to machine configuration and operational conditions, by experimental work and

Get Price25/02/2015· Bond Work Index 𝑤 = 10𝑊𝑖 1 𝑝 − 1 𝑓 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.

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