Sendelingsdrif

Dry Mining Screening, DMS, De-Grit & Thickening Mine Workshop, Fuel Bay, Wash Bay & Offices

ADP Marine and Modular were commissioned by Namdeb to determine and implement a complete economically viable and sustainable solution to mine the Sendelingsdrif alluvial deposit located in Namdeb’s Orange River Mines Mining License Area (ML42) on the Namibian side of the Orange River.

The Sendelingsdrif area has a tourism-based land end use and as such the full design of the project was done with that end state in mind.  An Environmental Impact Assessment was conducted and included various specialist studies as identified by the project team and Interested & Affected Parties (I&AP) during the stakeholder engagements.

The Sendelingsdrif project team (a partnership between ADP and the Namdeb Owners team) executed the detail design and construction of the Sendelingsdrif Treatment Plant (STP) and the associated infrastructure.

Seamless transition between the current Daberas operation and the Sendelingsdrif operation was seen as one of the biggest challenges of the project as the same mining equipment had to be utilised as was currently in operation at Daberas.

All of the on-mine infrastructure was provided to cater for the necessary support services, including water, power, earthmoving and treatment maintenance facilities, as well as the associated administration buildings.

Implementation:

The Sendelingsdrif Treatment Plant was designed to treat 850 tph of head feed from seven separate alluvial mining zones.

The plant is divided into two distinct areas – a dry front-end comprising main tip with rotating barrel screen feeding the dry primary screening and de-sanding screening sections.  The classified stockpiled material is then fed to a wet screening section, after which it is processed through a dense-medium separation plant and a recovery plant.

A feature of this plant was substantial re-use of re-furbished secondhand plant from the Client which served to reduce the capital costs of the processing plant significantly.

Construction started mid 2012 and first gravels were processed in March 2014.  The construction included two summer periods where temperatures regularly exceed 50 degrees Celsius.

This project achieved 750,000 injury free man-hours.

Area:   Orange River Mines