The Tasiast gold mine is an opencast operation located in northwestern Mauritania on the West coast of Africa, approximately 300 km north of the capital city of Nouakchott. It is owned and operated by Kinross Gold (Kinross), a Canadian-based senior gold mining company with mines and projects in the US, Brazil, Russia, Mauritania, Chile and Ghana. Kinross’ focus is on delivering value based on the core principles of operational excellence, balance sheet strength, disciplined growth and responsible mining.
The company recently initiated a phased expansion of its operations at Tasiast. Phase One significantly expanded production capacity and is also expected to reduce operating costs.
On 1 August 2018, Kinross announced that construction was complete and that first ore had gone through the semi-autogenous grinding (SAG) mill. Since then, the mill throughput increased from 8000 tpd to 12 000 tpd, representing a 50% increase. The mine estimates average annual production of gold to be 409 000 oz/yr through 2027.
Phase One added incremental crushing and grinding capacity to the existing carbon-in-leach (CIL) circuit, which includes an oversized SAG mill and gyratory crusher. For this expansion project, Kinross selected ABB to provide a 26 MW gearless mill drive system (GMD) for the mine’s 40 ft SAG mill, as well as other drives, electrical infrastructure equipment and a long-term service agreement (LTSA).