Question

Copper ore of average grade 0.65% is mined, milled, smelted and then refined. The following information is available:

Mill recovery rate : 85%

Average grade in mill concentrate : 20%

Loss in smelting process : 5 kg/tonne of concentrate

Loss in refining process : 2 kg/tonne of blister copper

The amount of refined copper obtained per tonne of ore in kg is

MCQ

5.10

5.37

5.52

6.50

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