The Kamoto Concentrator comprises four milling and flotation sections, the first two constructed in 1968 and 1972, and the newer sections in 1981 and 1982. From 1969 through 2000, when the Kamoto Concentrator was operated by the DRC’s state-owned mining company Gécamines, it processed over 126 million tonnes of ore at an average grade of 4.33% copper and 0.28% cobalt.

The facility has a design capacity of 7.5 million tonnes of ore per year. It operates by grinding the ore in one of the mills; minerals are then separated from the ground ore using a froth flotation system.

Following extensive Phase I refurbishment of two of the mills and 88 flotation cells, as well as piping and electrical systems, production began at the Kamoto Concentrator in July 2007. Both the sulphide and oxide circuits are now operational. During 2008 an additional mill and 58 more flotation cells will be refurbished under Phase II of the project.