(c) The ore being placed on the heap has an average copper grade of 1.0% and the lixiviant addition rate is 900 m3 /hr. 5% of the liquid is lost through evaporation and other loses and the pregnant solution contains an average of 2.1 kg Cu/m³. The solvent extraction stage recovers 90% of this copper, with the barren solution having additional acid and water added to make up for the lost volume and consumed material before being added back onto the heap. What is the average recovery of the copper from the heap leaching assuming no losses in the SX/EW?

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(c)
The ore being placed on the heap has an average copper grade of 1.0% and the lixiviant
addition rate is 900 m3 /hr. 5% of the liquid is lost through evaporation and other loses
and the pregnant solution contains an average of 2.1 kg Cu/m³. The solvent extraction
stage recovers 90% of this copper, with the barren solution having additional acid and
water added to make up for the lost volume and consumed material before being added
back onto the heap. What is the average recovery of the copper from the heap leaching
assuming no losses in the SX/EW?
Transcribed Image Text:(c) The ore being placed on the heap has an average copper grade of 1.0% and the lixiviant addition rate is 900 m3 /hr. 5% of the liquid is lost through evaporation and other loses and the pregnant solution contains an average of 2.1 kg Cu/m³. The solvent extraction stage recovers 90% of this copper, with the barren solution having additional acid and water added to make up for the lost volume and consumed material before being added back onto the heap. What is the average recovery of the copper from the heap leaching assuming no losses in the SX/EW?
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