Determination of Bond index of Birnin- Gwari Iron Ore in Nigeria


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 weight were ground using the laboratory ball mill grinding machine. 80% passing size for the iron ore marble and granite samples were obtained at 100μm sieve size for the feeds and products. 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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K. Olatunji and A. Durojaiye, "Determination of Bond index of Birnin- Gwari Iron Ore in Nigeria," Journal of Minerals and Materials Characterization and Engineering, Vol. 9 No. 7, 2010, pp. 635-642. doi: 10.4236/jmmce.2010.97045.

Conflicts of Interest

The authors declare no conflicts of interest.


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