Figure 14 – Simplified flowsheet of NovaCellTM CPF circuit 2. CASE STUDIES Case Study 1: NovaCell CPF test programs on ROM material Jord, together with our partner laboratory, has undertaken multiple test programs on ore deposits globally. Although other commodities have been tested, the focus of this study is on copper porphyry, copper porphyry-like, and iron-oxide copper gold (IOCG) ores delivered as ROM material. ¡Error! No se encuentra el origen de la referencia. presents six ore bodies, detailing the feed grades and feed grind sizes tested under laboratory conditions. Table 4 – Copper ore bodies tested with the NovaCellTM Location USA USA Australia Australia Canada Australia Feed Grind Size P80 µm 490 480 460 365 350 212 Feed Grade % Cu 0.4% 0.2% 0.5% 0.4% 0.2% 1.0% Deposit Type Porphyry Porphyry Porphyry Porphyrylike Porphyry IOCG The objective of the work was to evaluate the NovaCell™ in the CPF application of coarse gangue rejection. Thus, relatively coarse flotation feed grind sizes were tested, and the NovaCell™ performance was evaluated. For the proposed simplified NovaCell™ CPF flowsheet to be a viable option, recovery and selectivity in both coarse (+106 µm) and fine (-106 µm) size fractions were evaluated separately. Figure 15 presents the NovaCell™ copper recoveries for the ROM ore bodies. The plot shows the ore feed size vs copper recovery for the bulk, coarse and fine size fractions. The bulk recovery is shown by the line graph. The contributions of coarse and fine size fractions is represented by the green and blue bar graphs, respectively. The NovaCell™ results indicate bulk copper recoveries ranging from 87% to 94%, with contributions from both the coarse and fine size fractions. The fluidized bed targets coarse particle recovery, with recovery contributions ranging from 23% to 45%. The downcomers target finer particle recovery, with recovery contributions between 48% and 67%. It’s typical that the finer size fractions provide a larger contribution, as these fractions generally have a higher
RkJQdWJsaXNoZXIy MTM0Mzk2