Heap leaching converts the desired minerals into a chemical compound, which, at the bottom of the leach pile
, drains into perforated pipe and is carried by gravity to the final extraction process, usually via a pregnant solution pond.
2]) allowing them to 'walk' on either the drainage layer or the leach pile
without compacting it.
designs must take into account a lack of surface area that can create long hauls if dumps are shallow.
The negative aspect of recycling pregnant solution is an increase in gold inventory in the leach pile
because the entrapped solution is of a higher grade.
2]) that allow them to walk on either the drainage layer or the leach pile
, without compacting it.
Barren solution from the Pampa Larga processing plant, near the Carachugo leach pad, is pumped to the Maqui Maqui leach pile