Refining
Our refinery is in the Bugesera Special Economic Zone, south of Kigali. It is where we use our proprietary hydrometallurgical process to refine concentrate from the mines into high-purity tantalum and niobium oxides for the global network of pyrometallurgical smelters.
It is Africa’s only tantalum refinery and is compliant with the Responsible Minerals Assurance Process.
Responsible Minerals Assurance ProcessResponsible Minerals Initiativeresponsiblemineralsinitiative.orgOur clients can rely on us:
- Licensed. PowerX is fully licensed to process minerals, to operate a traceability system and to export.
- Assessed. The refinery is assessed under the Responsible Minerals Initiative's Responsible Minerals Assurance Process, and its annual due-diligence reports are published on our Policies & reports page.
- Measured. Every lot that enters or leaves the refinery is weighed, sampled and assayed in our own laboratory, and the result is recorded against the lot.
- Traced. Third-party feed is accepted only from suppliers who have passed our know-your-counterparty checks and an on-the-ground assessment of their site. Every lot keeps its own Original Evidence record from the mine gate to the product drum.
- Documented. Every product lot ships with a certificate of analysis and its Original Evidence record.
We take supply chain ethics seriously. If you would like to report an issue:
Speak up