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 Ore processing |
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 Artisanal mining |
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| Semi-industrial mining |
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| Industrial mining |
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Several techniques are used to process the diamantiferous ore. The techniques
used will not be the same between artisanal and industrial mining, however there are
some common elements:
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| Artisanal mining |
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 The material for this type of mining is very rudimentary: shovel, picks, sieves,
pumps, etc... It is the will and the courage which is significant for the miner. It is the form of diamond mining which employs the most labour. |
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| Semi-industrial mining |
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| Mobile diamond washing plant |
Dredge |
 A mobile diamond washing plant can be a judicious choice, it is
autonomous and it can be moved from a place to another. We recommend the French company Soditra-Sodiloc, for any mobile washing plant.
Their website: Soditra-Sodiloc. |
 Depending on the hardness of the bottom floor, it allows an average extraction of 7 to 10 cubic
meters per hour of stelled gravels to a depth of 10 meters. Density separation up to 91% heavy materials above 80 micromilimeters are collected.
The french company Soditra-Sodiloc, offers those types of dredges. |
| Diamond washing plant (fixed or semi-mobile) |
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 The capacity of these washing plants is definitely higher than mobile washing plant.
Their capacity varies between 15 m3/h to 200 m3/h. They can be entirely automated, and so there is no direct contact with diamonds. All washing
plants are customed. The Soditra-Sodiloc
company provides and installes the Hymex diamond washing plant in Guinea (capacity 160 m3/h). |
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| Soditra-Sodiloc photos: dredges 4" and 6", mobile washing plant, Hymex washing plant. Click here. | |
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| Industrial mining |
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 The costs to be considered for this type of mining are
considerably higher than the two other types of mining. Several parameters are essential: negotiations with the authorities, systematic study
of the deposit (shape, dimensions, nature of the ground and the subsoil), study of the climatic conditions, provisioning of water and electricity,
construction of roads, creation of schools and hospitals, etc... We can say to finish that it is the nature of the deposit which defines the mode
of mining. |
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| For this type of mining the operations of diamond collecting are
automated, they use a x-ray separator. You can find below a diagram and an image (click
to enlarge images). |
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