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the p 25 and p 10 levels were increased by 30 percent above the p 50 level because literature indicates that the bottom of the ore body has not yet been determined. owner: big river minerals corp (1990) operator: pea ridge iron ore co. reo in iron ore = 0.5%. reo also occurs in 4 breccia pipes = 2 million mt at 12%
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In this study, the Bond work index of Birnin- Gwari iron ore in northern Nigeria is determined using modified Bond's method using 'reference ore'. Samples of iron ore were sourced using random method, reference minerals; marble and granite of known weight and iron ore of known weight were ground using the laboratory ball mill grinding ...
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Characterization And Bond Work Index Determination . bond work index and the consumed energy berry and bruce discovered new method for determining the work index, the concept of this method depended on the use of a reference ore of known work inde. iron ore is one of the important industrial minerals used in steel industrials. magnetite, …
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A developed approach based on grinding time to determine, Besides, the results of work index tests are accordingly implemented in Equation 5 to calculate the ore work index valu Equation 5 is similar to Bond work index equation, but it has been defined for the foregoing calibrated bond ball mill 15 P F P G Wi i i 10 10 1176 1 1 230 75 u u 5 Where, W i …
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Work Index De Bond Iron Ore - jarzynowakuchnia.pl. 05.07.2021· razorback iron ore: typical pilbara ore: bond work index (bwi) 9 kw/t > 24 kw/t: crushing work index (cwi) 10 kw/t > 16 kw/t: uniaxial compressive strength (ucs) 80 mpa > 200 mpa : negligible overburden resulting in a very low strip ratio . overburden is the rock and soil that ...
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Aug 1 2018 PDF The Bond work index is a measure of ore resistance to crushing and grinding and is determined using the Bond grindability test Its value ... This is an experimental work on a local oolitic iron ore deposit The objective was to Also calculated is Bond s constant to be used for estimating the power re quirements of large mills ...
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Ball Mill Design For Gold Ore In Ethiopia- SOF . Deze pagina vertalen. Mining Ore Gold Ore Ball Mill Machinery Ethiopia. 201915the brilliant prospects of mineral exploiting and using in ethiopia could be apparently sensed and its green rock belt is one of the best gold areas that over 500 cubic ton minerals mainly including gold niobium tantalum ore potassium ore …
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Jan 31, 2019 · Parameters such as Bond work index and single-particle breakage are widely used to measure the energy requirements for size reduction in the analysis of ore properties. The Bond work index test is a standard method of ore characterization used to assess the energy required for size reduction, and finds wide application in the ...
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Bond index is useful in designing of grinding system in mineral processing. In this study, the Bond work index of Birnin- Gwari iron ore in northern Nigeria is determined using modified Bond's method using 'reference ore'. Samples of iron ore were sourced using random method, reference minerals; marble and granite of known weight and iron ore of known …
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The work index (Bond, 1952) is the work input in kilowatt hours per ton required to break from theoretically infinite size to 80% passing 100 microns. ... Two blasting tests (Bond, 1954) on Taconite iron ore in Minnesota five years ago gave work index values of 14.5 and 13.5, or an average of 14.0, which compares with 14.7 recently obtained in ...
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May 01, 2021· The Bond work index (BWI) is a well-known method used when selecting comminution equipment, to evaluate the grinding efficiency and to calculate the required grinding power. ... Specifically, the grinding behaviour of two different mill feeds (model quartz and iron ore) together with solid loadings (50, 57, and 67 wt% solids) were …
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Jan 01, 2009· A Bond Ball Mill Work Index test is a standard test for determining the ball mill work index of a sample of ore. It was developed by Fred Bond in 1952 and modified in 1961 (JKMRC CO., 2006). This index is widely used in the mineral industry for comparing the resistance of different materials to ball milling, for estimating the energy required ...
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observed that the Bond ball mill work indices for the ore Wi varies from 146 to 209 kWh/t The relationship between the ore hardness and iron content presented in Figure 2 indicates that the samples with a higher magnetite content Fe are softer lower bond work index, suggesting that the magnetite in the ore may be softer than the non ....
Details Jan 01, 2017· The 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 )
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The work index of 20.39 Kwh/s ton value obtained when granite was a reference ore is within the limit of work index of some iron ores in Nigeria (Weiss, 1965 and Thomas, 2007). 4. CONCLUSION AND RECOMMENDATIONS The study shows that work index of Birnin –Gwari iron ore can be taken as 28.66 Kwh/ston i.e.
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2020110the bond work index for b and c type iron ore sample are of 11 and 10 kwhmt. the variation of bwi of three iron ore sample may be varied during the geological formation of each iron ore sample. the output product of three iron ore sample composed of three different sie fractions when ground in bonds ball mill.
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