Cobalt Mine, DRC

Clean TeQ’s CLEAN-IX® continuous ion exchange technology was used to remove and concentrate uranium from a cobalt rich liquor at a large minerals processing facility in the Democratic Republic of Congo. If not removed, the uranium significantly reduces the sale price which can be achieved for the site’s final cobalt product. The plant is part of an operation which is focused on mining tailings wastewater reclamation, mainly focused on recovering copper and cobalt. Site construction occurred in late 2018, with commissioning in 2019. 

IMG E1996 2
Photo of the completed plant

The continuous ion exchange plant was designed to treat approximately 830 m3/h of liquor (20 ML/d) and reduced uranium concentrations from 30 mg/L to <1 mg/L.

DRC process 1

In order to provide the client with processing flexibility, during commissioning the continuous ion exchange plant was required to treat a more acidic feed than was designed for. Despite this significant change, uranium removal extent remained above 90%.

Our CLEAN-IX® CLX metal recovery technology provides a lower cost than fixed bed ion exchange with a small plant footprint. It was a cost efficient and robust solution to the client, handling different flow rates and feed water qualities.


LocationDemocratic Republic of the Congo
TechnologyCLEAN-IX® CLX
TreatmentUranium Removal and Recovery
Clean TeQ’s RoleEngineering, Procurement, Construction
Project StatusOngoing