Mufulira slag dump has 14 tonnes of material at average grade of 1.18 and 0.48 weight \% copper and cobalt. Determine the expected gross revenue copper and cobalt are extracted at an efficiency of 80 and \( 70 \% \), respectively. Assume the price of copper and cobalt is 9,100 and 24,900 USD per tonne? [6 marks]
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\[ \text{Total copper} = 14 \, \text{tonnes} \times \frac{1.18}{100} = 0.1652 \, \text{tonnes} \] \[ \text{Total cobalt} = 14 \, \text{tonnes} \times \frac{0.48}{100} = 0.0672 \, \text{tonnes} \] Show more…
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