Rio Tinto creates lithium unit after completing $6.7B Arcadium deal 

Rio Tinto (ASX, LON, NYSE: RIO) has officially completed its $6.7 billion acquisition of Arcadium Lithium (ASX: LTM)(NYSE: ALTM), which will become Rio Tinto Lithium.

The newly formed unit will take control of Rio’s $2.5 billion Rincon project in Argentina but will not include the mining giant’s Jadar lithium project in Serbia.

The acquisition of Arcadium, announced in October, marks Rio’s largest deal in more than a decade. It positions it among the world’s largest lithium miners, trailing only US-based Albemarle (NYSE: ALB) and Chile’s SQM (NYSE: SQM).

“By combining Rio Tinto’s scale, financial strength, operational and project development experience with Arcadium’s Tier 1 assets, technical and commercial capabilities, we are creating a world-class lithium business,” chief executive officer Jakob Stausholm said in a statement. 

Rio Tinto Lithium plans to expand its inherited assets’ capacity to over 200,000 tonnes of lithium carbonate equivalent (LCE) annually by 2028.

The company is adding lithium mines in Argentina and Australia, as well as processing facilities in the US, China, Japan and the UK. Its customer base would include major names, such as Tesla, BMW and General Motors.

The lithium unit intends to leverage complementary technologies to drive volume growth in a rising market, which it expects will translate into higher EBITDA and cash flow in the coming years.

The creation of Rio Tinto Lithium comes amid persistently low lithium prices, which have forced major producers, including Chile’s SQM and Sibanye-Stillwater (JSE: SSW)(NYSE: SBSW), to scale back operations and cut spending to protect margins.

Long-term play

Rio Tinto has been steadily increasing its footprint in the battery materials market over the past seven years. In 2018, the company reportedly attempted to acquire a $5 billion stake in SQM.

Three years later, it kicked off lithium production from waste rock at a demonstration plant at its borates mine in California.

A key milestone came in 2022 with the acquisition of the Rincon lithium project in Argentina. The asset has reserves of almost two million tonnes of contained LCE, enough for a projected 40-year mine life.

Rio plans to build a battery-grade lithium carbonate plant at Rincon with an initial annual capacity of 3,000 tonnes, investing $2.5 billion in what will become its first commercial-scale lithium operation. First production is expected in 2028, with a three-year ramp-up to full capacity.

The world’s second largest miner is also trying to revive its $2.4 billion Jadar project in Serbia. The country revoked Rio’s mining license in 2022 following widespread protests against the proposed mine on environmental concerns.

The miner won a small, but key battle in July 2024, as Serbia reinstated Rio Tinto’s licence to develop it, but the company will have to secure approvals to move towards production.

The Serbian parliament is still debating a proposal to ban lithium and borate mining, which, if passed, would effectively block the project.

With an expected production of 58,000 tonnes of refined battery-grade lithium carbonate per year, Jadar would be Europe’s biggest lithium mine.

The operation could supply enough lithium to power one million electric vehicles and meet 90% of Europe’s current lithium needs.