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Forwarded from مرجع فرآوری مواد معدنی و هیدرومتالورژی
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Forwarded from H.Karimi
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Sustainable management of mining operations.PDF
12.1 MB
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Send by:H.Karimi
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Forwarded from H.Karimi
🔔🔔 Heap Leach Pads 📢📢
The stages for heap leaching can be described as:
1- Ground Preparation and pad construction: Here the soil on a slightly sloping ground is compacted and covered by an impermeable pad (can be made of plastic).
2- Ore stacking: Then the crushed ore is stacked in the form of big heaps. Amount of fines is decreases as low as possible to improve permeability.
3- Then the leaching agent such as cyanide or acid is sprayed over the heap.
4- As, the reagent passes through the heap; the valuable metals get dissolved in it.
5- The solution containing metal is drained from the heap and collected in a pond and the solution is sent for subsequent process for metal recovery.
Here is an illustration of the process:
👇👇👇👇👇👇👇👇👇👇👇👇
The stages for heap leaching can be described as:
1- Ground Preparation and pad construction: Here the soil on a slightly sloping ground is compacted and covered by an impermeable pad (can be made of plastic).
2- Ore stacking: Then the crushed ore is stacked in the form of big heaps. Amount of fines is decreases as low as possible to improve permeability.
3- Then the leaching agent such as cyanide or acid is sprayed over the heap.
4- As, the reagent passes through the heap; the valuable metals get dissolved in it.
5- The solution containing metal is drained from the heap and collected in a pond and the solution is sent for subsequent process for metal recovery.
Here is an illustration of the process:
👇👇👇👇👇👇👇👇👇👇👇👇
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Title of Figure:Heap Leach Pads
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Title of Figure:Heap Leach Pads
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Forwarded from H.Karimi
DESIGN
Conceptually there are a number of designs of heap leach pads to consider. The design will be determined by the geography, amount of space available or climate. The principal types available are:
✔️Reusable Pad
✔️Expanding Pad
✔️Valley Method
👇👇👇👇👇👇👇👇👇👇👇👇
Conceptually there are a number of designs of heap leach pads to consider. The design will be determined by the geography, amount of space available or climate. The principal types available are:
✔️Reusable Pad
✔️Expanding Pad
✔️Valley Method
👇👇👇👇👇👇👇👇👇👇👇👇
Download in the mineral processing & hydrometallurgy. Channel
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Title of Figure:Heap Leach Pads
@mineralprocessing
Send by:H.Karimi
Title of Figure:Heap Leach Pads
@mineralprocessing
Download in the mineral processing & hydrometallurgy. Channel
Send by:H.Karimi
Title of Figure:Heap Leach Pads
@mineralprocessing
Send by:H.Karimi
Title of Figure:Heap Leach Pads
@mineralprocessing