I wasn’t able to access the full article from the link you provided, but I can offer a brief summary based on the title and context.
Rio Tinto’s primary interest in its recent deal may lie in Arcadium’s lithium extraction technology. Lithium is a key component for batteries, particularly in electric vehicles, and efficient extraction processes are critical as global demand increases. Rio Tinto, a mining giant, likely views this technological advantage as a strategic asset for maintaining competitiveness and sustainability in the rapidly growing battery materials market.