Hydrometallurgical process for extraction of metals...
Hydrometallurgical process for extraction of metals...
Hydrometallurgical process for extraction of metals...
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Kamberović et al.- <strong>Hydrometallurgical</strong> <strong>process</strong> <strong>for</strong> <strong>extraction</strong> <strong>of</strong> <strong>metals</strong>i... 147<br />
Table 4. b) Calculated dependence <strong>of</strong> gold amount vs. payback time, 100 kg <strong>of</strong> waste<br />
input material per batch<br />
EXECUTIVE SUMMARY – 100 kg<br />
Total Capital Investment 149,000$<br />
Capital Investment Charged to this Project 149,000$<br />
Operating Cost 144,000$/yr<br />
Gold amount, Total revenues, Return on investment, Payback time,<br />
ppm<br />
$/yr<br />
%<br />
years<br />
200 99,000 -21.68 not feasible<br />
300 129,000 -2.71 not feasible<br />
440 169,000 17.32 5.77<br />
500 188,000 24.88 4.02<br />
600 219,000 37.44 2.67<br />
700 252,000 50.75 1.97<br />
800 281,000 62.30 1.61<br />
890 299,000 69.65 1.44<br />
1000 339,000 85.55 1.17<br />
Gold (ppm)<br />
1000<br />
900<br />
800<br />
700<br />
600<br />
500<br />
2 4 6 8 10 12<br />
Return on investment (year)<br />
Diagram 1. Dependence <strong>of</strong> gold amount vs. payback time, 50 kg <strong>of</strong> waste input material<br />
per batch
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