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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The grindability of an ore in the process of mineral dressing can be determined by use of the Bond work index (W i). This index is determined on a laboratory-scale using a Bond ball-mill and by simulating dry grinding in a closed circuit until …
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The Bond work index is a measure of ore resistance to crushing and grinding and is determined using the Bond grindability test. Its value constitutes ore characteristic and is used for industrial ...
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The objective of this study was to conduct a rapid determination of Bond work index by considering grinding kinetics of the particles in standard Bond rod-mill as well as size-mass balance equations in the mill. ... a material generated from mechanical degradation of coke during handling which is used as solid combustible in iron ore sintering ...
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TL;DR: In this paper, the authors used the calculated retention time of the iron ores as a standard grinding reference time to the laboratory ball mill for optimizing the grinding time of each ore, and obtained a desired P80 (150μm) with an acceptable range of hematite liberation (> 75%) after reducing 6min from the total retention time taken in the Bond ball mill.
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The present investigation involves the identify the physical properties of three different types of iron ores by using Bond ball mill. The result shows that the maximum Bond work index of 14 KWh/mt was obtained for 'A' type iron ore sample. The Bond work index for 'B' and 'C' type iron ore sample are of 11 and 10 KWh/mt.
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The results showed that the ore is hematitic ore with Goethite and quartz minerals. The ore is low grade containing 41.41 % Fe2O3 and 50.88 SiO2. The bond work index test obtained high work index 52.60 kw.h/t and consumed power 11.72 kw.h/t to grind one ton of low grade iron ore and this attributed to the high concentration and hardness of ...
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The Bond Work Index (Wi) is a common technique for the estimation of hardness and energy requirement for comminution using ball mills. ... sulphured ore with high iron content and ore D (31.5% Si ...
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The initial size of the sample is strictly defined to be - 3.35 mm. This paper describes the methodology for the determination of the Bond work index when coarse or fine raw material is found in the initial sample (i.e. when the initial …
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DOI: 10.1016/J.MINPRO.2016.10.006 Corpus ID: 99402495; Prediction of Bond's work index from field measurable rock properties @article{Chandar2016PredictionOB, title={Prediction of Bond's work index from field measurable rock properties}, author={Karra Ram Chandar and S. N. Deo and Ashwin J. Baliga}, journal={International Journal of Mineral Processing}, year={2016}, …
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As well as, the Bond Work Index (BWI) and consumed power to grind one tone of iron ore were determined via standard Bond mill. The results showed that the ore is hematitic ore with Goethite and quartz minerals. The ore is low grade containing 41.41 % Fe2O3 and 50.88 SiO2.
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Metals, 2021. It is a well-known fact that the value of the Bond work index (wi) for a given ore varies along with the grinding size. In this study, a variability bysis is carried out with the Bond standard grindability tests on different critical metal ores (W, Ta), ranging from coarse grinding (rod mills) to fine grinding (ball mills).
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This Grindability Test or Bond Ball Mill Work Index Procedure is used to determine the Bond Work Index of minus six mesh or finer feed ore …
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The bond work index test obtained high work index 52.60 kw.h/t and consumed power 11.72 kw.h/t to grind one ton of low grade iron ore and this attributed to the high concentration and hardness of ...
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determination of the work index of BirninGwari iron ore in Nigeria. - A reference ore is ground for a certain time period and the power consumption recorded. An identical weight of the test ore is then ground for a length of time such that the power consumed is identical with that of the reference ore. Equation 1 gives the work index of the ...
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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,
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The Bond work index is a measure of ore resistance to crushing and grinding and is determined using the Bond grindability test. Its value …
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Bond's work index is very useful in blasting and communition process, but its determination is very lengthy and cumbersome process ... to stress fracture ore samples and the standard Bond's grindability tests showed that microwave heating reduced the work index of iron ores by 10 to 24%. ... Rapid determination of Bond rod–mill work index by ...
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The ore is low grade containing 41.41 % Fe2O3 and 50.88 SiO2. The bond work index test obtained high work index 52.60 kw.h/t and consumed power 11.72 kw.h/t to grind one ton of low grade iron ore and this attributed to the high concentration and hardness of quartz mineral which is considered the main gangue of the ore in study area .
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The Bond's equation was then used to calculate the work index of the Muro iron ore which was found to be 24.84 kWh/ t when marble was used as reference ore and 27.41 kWh/ t when granite was used ...
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This Grindability Test or Bond Ball Mill Work Index Procedure is used to determine the Bond Work Index of minus six mesh or finer feed ore samples. These equation application methods are used to process <1/2″ ore …
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The Bond ball mill grindability test is run in a laboratory until a circulating load of 250% is developed. It provides the Bond Ball Mill Work Index which expresses the resistance of material to ...
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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'.
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Discover the significance of Bond index in mineral processing and its application in grinding system design. Explore a study on the Bond work index of Birnin-Gwari iron ore in Nigeria …
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As well as, the Bond Work Index (BWI) and consumed power to grind one tone of iron ore were determined via standard Bond mill. The results showed that the ore is hematitic ore with Goethite and quartz minerals. The ore is low grade …
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A higher Bond work index value was found for the BHJ ore (15.4 kWh/ton) than for the BHQ ore (12.4 kWh/ton). A decrease in the product particle size was associated with an increase in the work index value. Single-particle breakage experiments were designed by varying feed particle size and input energy.
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The work index of reference minerals; marble and granite were used to calculate the work index of iron ore. The value of 28.66 Kwh/short ton and 24.92 Kwh/short ton were obtained. The value of 20.39 Kwh/short ton was selected as it is within the range indicated by previous research work on iron ore in Nigeria.
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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 911 Metallurgist is a trusted resource for practical insights, …
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Rapid determination of Bond rod-mill work index by … In this paper, iron ore sample from the Chadormalu was investigated to determine some comminution properties. Chadormalu deposit is one of the largest iron ore mine in Iran, which is located in Yazd province. ... The objective of this study was to conduct a rapid determination of Bond work ...
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