filter-pressed dry stacking: design considerations based
TRANSCRIPT
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C.Hore, C.Crystal, I.Ezama
Filter-Pressed Dry Stacking:Design Considerations Based on Practical Experience
Tailings and Mine Waste, 2018, Keystone Colorado
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The Challenge
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The Challenge
This is where we are going
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Can my tailings be filtered?
Yes!*With a tiny fine print disclaimer…
It’s about efficiency.
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What variability should I expect?
Often a lot!
Talk to the Geologists
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Do I need to filter all my tailings?
Maybe Not…
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Target Moisture Content - DriversConveyability Truckability or
trafficability
Compaction LiquefactionLandform Stability
Water saving
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Target Moisture Content - DriversConveyability Truckability or
trafficability
Compaction LiquefactionLandform Stability
Water saving
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Target Moisture Content
Moisture (%)
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Target Moisture Content
Moisture (%)
Tailings Property or Use
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Target Moisture Content
Moisture (%)
Tailings Property or Use
Moisture (%)
Image source: Nelson Amoah, published materials, April 2018)
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Target Moisture Content
Target Range
Upper limit
Image source: Nelson Amoah, published materials, April 2018)
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Off-spec tailings managementCommissioning Operations
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Off-spec tailings management
Loading pad
Zones within facility or
separate facility
Back-up transport
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Climate – Not Just Arid Environments
Wet Coldand/or
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Climate – Challenges and Opportunities
Wet Coldand/or
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Pore Pressure Generation
?
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Understanding is Critical
Instrumentation &Monitoring
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Co-Disposal and Co-Mingling
Significant opportunities
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Cost – Holistic, Not Isolated
Closure
Land
WaterTailings OPEX
Risk
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The Challenge
Scale
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C.Hore, C.Crystal, I.Ezama
Filter-Pressed Dry Stacking:Design Considerations Based on Practical Experience
Tailings and Mine Waste, 2018, Keystone Colorado
Thank You