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The work index is the comminution parameter, which expresses the resistance of the material to crushing and grinding;numerically it is the kilowatt-hours per short ton required to reduce the materialfrom theoretically infinite feed size to 80% passing 100 microns.Hukki (1975) suggests that the relationship between energy and particle size .
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This reduction was made up of a 21% reduction by implementing best practices and a 40% reduction from research and development that improves energy efficiency of mining and mineral processing technologies.
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