The 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 .
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Get PriceWORK INDEX Include friction in the crusher power Material Specific gravity Work Index, W i Bauxite Cement clinker Cement raw material Clay Coal Coke Granite Gravel Gypsum rock Iron ore (hematite) Limestone
Get Price= Bonds constant Energy required to reduce from Dpf to Dpp 𝑊 = I =𝐾 ... •It is desired to crush 10 ton/hr of iron ore hematite. The size of the feed is such that 80% passes a mm screen, and 80% of product a screen. Calculate the gross power requirement for wet grinding and dry grinding. Work index of Hematite is [Ans ] Size Reduction Equipment A. Crushers ...
Get Price· What is the Bond Work Index FormulaEquation? In case you had forgotten, here is a classic: You can read all the details of this now "Biblical" grinding power requirement calculation formula in Fred Bond's original paper.. You can also review the stepbystep Bond Work Index Test Procedure I posted here.. See this useful summary Table of Bond Work .
Get Pricedetermination bond work index of iron ore. Procedure for determination of ball Bond work index in the . ABSTRACT Laboratory studies were carried out to determine the grindability and work index of ltakpe Iron ore Okane Nigeria The Bond work index was measured in this study due to its reasonable appliion in the range of conventional ball mill and rod mill grinding as well as its wide ...
Get PriceSIMPLIFIED BOND WORK INDEX DETERMINATION By: R. O. Jauregui Kaiser Engineers International, Inc. 300 Lakeside Drive, Oakland, Ca. 94623, USA To design grinding circuits or evaluate their performance the Bond Theory of comrninution is used. Equation (1) is the mathematical statement of the Third Theory: where W = the energy input to the mill, (kwh/t) Wi .
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Get PriceLuckie [1]) Bond work index may be useful for mill design, but not for optimization of operating ball mills. The main limitations of Bond´s equation are associated to the fact that it does not allow decoupling the contributions of the mechanical environment, the mill transport and size classifiion. As such, the empirical equation for specific energy calculation implicitly assumes that the ...
Get Price· This Table of Ball Mill Bond Work Index of Minerals is a summary as tested on 'around the world sample'. You can find the SG of each mineral samples on the other table.
Get Pricerespect to the effect of ore hardness, circuit efficiency, grind size, and feed grade. The first energy curve shows the impact of ore hardness as assessed using the Bond work index comparative methodology. Both the Bond work index (BWi) and the operating work index (OWi) are presented as separate overlayed curves (Figure 1). The BWi is an industrystandard .
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Get Price· Table of Bond Abrasion Index for Varied MineralsMaterials. The Bond Abrasion Test determines the Abrasion Index, which is used to determine steel media and liner wear in crushers, rod mills, and ball mills. Bond developed the following correlations based on the wear rate in pounds of metal wear/kWh of energy used in the comminution process.
Get PriceSoft ore Coefficients k Bond work index (w i), kWh/short ton Denver orehardness Table. Relationship between the Bond work index (w i) and the ore hardness designated by Denver . 12 Relationship between the Bond work index (w i) and the Coefficients k k = w i Thus, the specific grinding energy w is given now from the general expression: wwDdif = − .
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Get Price· Relative Bond Work Index BWi | Comparative Grindability Test Procedure . Post navigation. Previous. Next. The test is designed to give a reasonable indiion of the grinding work index of an ore material relative to one or more known standards. It is not applicable to mill tailings material. Basic Equipment. Set of screens 75 to 2440 micron sizes. RoTap Sieve .
Get Price= Bonds constant Energy required to reduce from Dpf to Dpp 𝑊 = I =𝐾 ... •It is desired to crush 10 ton/hr of iron ore hematite. The size of the feed is such that 80% passes a mm screen, and 80% of product a screen. Calculate the gross power requirement for wet grinding and dry grinding. Work index of Hematite is [Ans ] Size Reduction Equipment A. .
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