The amount of energy required to do this work is important to understand to maximise efficiency Typical Values for Crushing Work Indices Crushing Work Index Material 8 Clay 13 Coal 22 Basalt Crushing Work Index Material 17 Iron Ore 14 Copper Ores 3 Glass Crushing Work Index Material 14 Quartz 13 Limestone 16 Gold
·The brittleness indices of the ores were calculated using the chemical composition of the gangue and a good correlation between brittleness indices and Bond work indices was observed which highlights the importance of the gangue composition in determining the fracture behaviour of the ores There is scope for
The traditional Bond work index proposed by Bond over 60 years ago is still today a useful tool for characterizing material crushability and grindability in the minerals industry
·As a fast method the determination of the Bond index from the Hardgrove index by calculation is almost matching with measured Bond s work index The Bond s work index of the above rock samples calculated from the Hardgrove index value has shown a variation from to kWh/ A correlation is found between the friability value and
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
·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
·The traditional Bond work index proposed by Bond over 60 years ago is still today a useful tool for characterizing material crushability and grindability in the minerals industry
The commonly used grindability tests included in the database are the Bond work indices for ball milling rod milling and crushing; the drop weight test results A b A×b DWi Mia Mic Mih and
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