The Imouraren deposit, located in Niger, is considered to be the largest open-pit uranium mine in western Africa with production set to extend more than 35 years.
The deposit is expected to produce 5 000 t/y of U2O4 (Yellowcake) and the process will consist of heap leach pad facilities plus solvent-extraction (SX) and precipitation.
Since 2009 Ausenco has contributed to the Imouraren project by successfully delivering conceptual design and basic engineering services.
We continued our association with the project by delivering detailed design engineering for the 6-8 Mt/y on-off heap leach pad and tailings operation which includes:
The heap leach pad consists of:
The Tailings facility consists of:
The project is located in a high rainfall area with precipitation capable of reaching 63mm in just 30 minutes. This challenging factor was addressed by Ausenco with regards to the design of the storm water system.
This important operation will provide significant support to the socioeconomic development of Niger.