The investment aims to reduce carbon dioxide emissions and expand research and development at the site.
Over an eight-year period, the government of Canada will invest up to C$222m in the RTFT facility to increase its production of critical minerals, including lithium, titanium and scandium.
The investment will also help increase Rio Tinto’s production capacity, add essential mineral processing capabilities and recover critical minerals from waste streams.
It is expected to create 150 jobs at the mineral processing plant and will be made through the government’s Strategic Innovation Fund.
Rio Tinto said in a statement: “The partnership will support technological innovations that represent a first step towards reducing greenhouse gas emissions from RTFT’s titanium dioxide, steel and metal powders business by up to 70%.
“It will also progress initiatives to diversify RTFT’s product portfolio, reinforcing Rio Tinto’s leadership as a North American supplier of critical minerals for key growth sectors such as electric vehicles, 3D printing and aerospace.”
The investments are expected to quadruple the facility’s annual scandium oxide production from 3t to 12t.
New techniques will also be developed for smelting titanium dioxide, steel and metal powders to help lower the plant’s carbon emissions by up to 70%.
Rio Tinto CEO Jakob Stausholm said: “Rio Tinto is committed to being part of a net-zero future, from decarbonising our operations to finding new ways to produce the materials needed for the transition.
“We are excited to collaborate with the Government of Canada to position RTFT for the future and strengthen the critical minerals and metals value chains in Canada and the United States.”