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Heap leach draindown

PROBLEM

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?

SOLUTION

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.

Additional Articles


AACrossSec02

2D steady-state model of cross-section through AA center of tailings. Line divisions have been added to simulate the application zones.

Model filename: HeapLeach > AACrossSec02.svm

Tags: HeapLeach,SVFLUX,2D,Steady-State,HeapLeach,Heap leach draindown,Mining,Heap leach draindown,Heap Leach

Attachments:

Heap+Leach+on+Steep+Ground

Model filename: HeapLeach > Heap+Leach+on+Steep+Ground.svm

Tags: HeapLeach,SVFLUX,2D,Steady-State,HeapLeach,Mining,Heap leach draindown

Attachments:

HeapOverlinerFlowSS

Simple example of homogeneous flow with an overliner.

Model filename: HeapLeach > HeapOverlinerFlowSS.svm

Tags: HeapLeach,SVFLUX,2D,Steady-State,Heap leach draindown,Mining,Heap leach draindown,HeapLeach,Heap Leach

Attachments:

LayeredHeapSS

Increasing ksat with depth.

Model filename: HeapLeach > LayeredHeapSS.svm

Tags: HeapLeach,SVFLUX,2D,Steady-State,Mining,HeapLeach,Heap leach draindown,Heap leach draindown,Heap Leach

Attachments:

LeachingAirInjection

Simulation of heap saturation under the influence of air injection.

Model filename: HeapLeach > LeachingAirInjection.svm

Tags: HeapLeach,air injection,heap leaching,SVFLUX,SVAIRFLOW,2D,Transient,Mining,Heap leach draindown,airflow coupled with water flow,two phase flow,air pressure,water pressure,matric suction,heap saturation effect factor

Attachments:

LeachingWithoutAirInjection

This model is used for comparison to the coupled SVFlux/SVAirFlow model LeachingAirInjection

Model filename: HeapLeach > LeachingWithoutAirInjection.svm

Tags: HeapLeach,SVFLUX,2D,Transient,Mining,Heap leach draindown

Attachments:

PoreClogging

Represents the effect of pore clogging on the overall flow regime.

Model filename: HeapLeach > PoreClogging.svm

Tags: HeapLeach,SVFLUX,2D,Steady-State,HeapLeach,Heap leach draindown,Mining,Heap leach draindown,Heap Leach

Attachments:

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