Consulting Solutions: Heap Leach Pad Drain-down and Efficiency Analysis



There are a myriad of flow issues related to the successful design of a heap leach pad. Some of these issues are:

  • Is the design of the drainage system adequate for optimal recovery?
  • What is the time for the heap leach pad to drain-down once the operation is finished?
  • What application of liquor will result in an optimal saturation level in the heap?
  • What cover design will best allow ultimate closure of a heap leach facility?


The SVFLUX™ software package will allow successful modeling of a variety of operations and closure scenarios associated with heap leach pads. Various drainage scenarios may be modeled. The long-term performance of a proposed cover design may be modeled in order to minimize the amount of solution released from the closed heap pad.

Preferential flow can be modeled using the spatial variability features in SVFLUX. It is also possible to perform rudimentary modeling of the movement of the liquor solution in the pad when SVFLUX is coupled with the CHEMFLUX™ software.

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