192 and 4(f) show the minerals recovery distributions, following a very similar pattern to that of the Fe3+ concentration distribution. Figure 4 – Base case IPR simulation with distributions of: (a) porosity; (b) effective saturation; (c) flow velocity with white arrows showing flow streamlines; (d) normalised ferric ion (Fe3+) concentration after six month; (e) copper recovery after six month; and (f) pyrite recovery after six month. For mine production planning and scheduling, the copper recovery-time relationship is a key input, as it governs metal output profiles, cash-flow timing, and processing capacity utilisation. Figure 5(a) shows the total copper recovery for 12 months of IPR operation with the base case conditions. Copper recovery increases relatively rapidly in the first six months from 0% to 40%, and then it slows down and increases to 60% for the remaining six months. This change in copper recovery rate is due mainly to the different reaction rates of the three copper minerals and the different ore sizes, see Figures 5(c) and 5(d). In addition to the total copper recovery-time curve, the model can provide recovery assessment by spatial location, ore size, and mineral type, as shown in Figures 5(b), 5(c), and 5(d), respectively. This information provides valuable support for assessing IPR feasibility, optimising blast design, and refining leaching operations.
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