Pregnant leach solution

Pregnant Leach Solution (PLS) is acidic metal-laden water generated from stockpile leaching and heap leaching. Pregnant Leach Solution is used in the SX/EW process.[1]

The portion of an original liquid that remains after other components have been dissolved by a solvent is called raffinate.

References
  1. http://www.rosemonteis.us/glossary/term/285%5B%5D


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