Westwater now plans to take the product to market.
Nachu can produce high-purity graphite without chemical or thermal purification.
Deal means 90% of output is sold
The mine's output could help reduce China's reliance on graphite imports.
Transaction comes six months after commercial production began.
DRA Global has been involved with Guinea graphite project from the PEA-stage through feasibility
Hydro-Québec will install a 120kV electrical line to supply the Matawinie mine site in Quebec
Graphite producer says government restrictions behind decision
Secondary graphite transformation plant commissioned at Matawinie
Canada-based junior formalises partnership with Saint-Michel-des-Saints municipality
Planned Western Australia works for EcoGraf chasing expected increase in battery graphite demand
Nouveau Monde CEO Eric Desaulniers on the latest developments at its all-electric open-pit mine