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SDM use Gekko System's InLine Pressure Jig

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article image Gekko System's InLine Pressure Jig for SDM
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Gekko System's  InLine Pressure Jig has been used for gravity separation for processing applications.

Plans to expand SDM's Janange 1 Plant in the Lunda Norte region of Angola include the installation of Gekko's Inline Pressure Jig 2400 for the pre-concentration of diamondiferous alluvial gravels.

The SDM is a joint venture between Endiama EP (the National Diamond Company of Angola) and Odobrecht Engineering (a Brazilian-based civil construction company that also operates the Catoca diamond mine).

Russell Heins, Manager: RSA Operations & Sales for Gekko Systems, is excited about both the project and the relationship with SDM. He said that this is the first Inline Pressure Jig in Angola.

The Angolan diamond industry is growing and has, at present, a diversity of operations which could benefit from the Inline Pressure Jig. These applications range from increasing installed capacity, improving DMS feed quality to use in small mobile alluvial sample plants.

The Inline Pressure Jig arrived on-site and was recently commissioned with tests yielding good diamond and value recoveries through the mineral processing. It will be used as a pre-concentrating device and will allow the plant to increase the tonnage of river gravel that is mined, thus increasing the carats produced from this section of the operation.

Denis Boska, Metallurgy Manager for SDM, said that based on the future mine plan, the decision to install the Inline Pressure Jig was made after it became clear that there was a shortage of installed DMS capacity at their Janange operations. He opines that after looking at all the possibilities, the Inline Pressure Jig clearly presented itself as the most suitable option in terms of performance, security, ease of operation and installation into their existing flow sheet.

He feels that the advantages over constructing and operating an additional DMS were significant compared to the labour and other operational costs that such a plant would have required.

The river gravel reporting to the DMS feed contains significant quantities of vegetation and other undesirable material. The Inline Pressure Jig will remove this material, thus minimising and improving downstream processing.

According to Russell Heins, the gravel at the Janange 1 site is fairly typical of Angolan alluvial gravels, therefore the successful installation at the SDM Plant will open the door for other operators to benefit from the application of Inline Pressure Jig technology, saving them money on operating costs and increasing carats recovered.

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