copper distribution even at coarse flotation feed grind sizes. Overall, the results confirm that the NovaCell™ can recover valuable copper minerals across all size fractions for a range of ore bodies. Figure 15 – NovaCellTM copper recovery contributions by size ¡Error! No se encuentra el origen de la referencia. presents the NovaCell copper enrichment ratios for the ROM ore bodies. The plot indicates the relative copper recoveries vs enrichment ratios for the bulk (black dots), coarse (green dots) and fine (blue dots) size fractions. Enrichment ratio (product grade ÷ feed grade) is a standard metric for flotation performance (Wills & Napier-Munn, 2006). For rougher flotation stages, typical enrichment ratios are reported to range approximately from 4 to 10, depending on ore type and circuit conditions. Figure 16 – NovaCellTM copper enrichment ratios by size The NovaCell™ results indicate bulk enrichment ratios ranging from 8 to 16. The coarse fraction enrichment ratio ranged from 5 to 22, while the fine fraction enrichment ranged from 9 to 23.
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