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Rio Tinto’s Chile deal is a gamble on an unproven technology and a lithium price surge

Rio Tinto’s Chile deal is a gamble on an unproven technology and a lithium price surge

Rio Tinto, a global miner, will take on one of the most challenging technological challenges in lithium's industry by leading Chile's largest project in recent years involving this battery metal. It will be working with state-run copper manufacturer Codelco.

Maricunga is a pivotal moment for Rio and a turning-point for Chile. The country will now add a third lithium project to its portfolio, after years of stagnation.

Codelco announced Monday that Rio will own less than half the project but will be responsible for design, construction, operations and sales.

Industry experts claim that a major challenge in the separation of lithium from brine is to use a new technology called direct lithium extraction. This is supposed to be more efficient and environmentally friendly than traditional methods.

This method has not been widely tested in the industry, and it has never been used at a commercial scale in Chile.

Maricunga is one of the most lithium-rich flats in the world. The challenge comes amid a background of uncertainty regarding lithium prices. These have dropped nearly 90% since 2022, due to an oversupply of lithium and weak demand from EVs.

Nicole Porcile is a partner with mining consulting firm Anagea. She said, "Scaling the project in line with global demand timelines remain uncertain." The ability to deliver efficiently, at scale and reliably is a key factor for the project's success and investor confidence.

Rio has a DLE-pilot plant at its Rincon Project in Argentina. It also recently acquired U.S. based Arcadium which uses a combination of DLE and conventional extraction methods.

A person familiar with this deal said that Rio's DLE expertise gave it an advantage over the three other final competitors in partnering with Codelco. Rio and Codelco still have to decide which DLE is most effective and sustainable at Maricunga.

The person stated, "Codelco knows that they will be scrutinized and is committed to developing the best possible environmentally-friendly product."

The person said that Codelco’s search for an investor in Maricunga attracted Middle Eastern and Chinese companies as well as Western ones. The construction is expected to begin in three to five year, after environmental permits have been updated.

Codelco proposed a gradual switch to DLE. Rio Tinto, however, is looking to implement DLE right away, at lower costs than other DLE projects.

ARGENTINA EXPERIENCE

Rio Tinto said its Argentina experience provides a strong foundation for future projects.

A spokesperson stated, "We are confident that our technology can be applied to Maricunga as well as other lithium flats in Chile."

Rio could spend as much as $900 million for the project. Rio is the only large mining company that has placed a bet on lithium. It is accelerating its push by signing a second contract in six months, at a low price point.

In a recent note, analysts at RBC Capital Markets stated that "we have not heard investors say they want to continue investing in lithium."

Rio is also a contender for the Altoandinos Lithium Project in Chile, controlled by the state mining company ENAMI. ENAMI expects to announce its partner by the end May.

This process is separate from Maricunga where Codelco employed Rothschild, an investment bank to find candidates.

Codelco is also set to close a partnership with SQM, Chile, at the Atacama Salt Flat.

Benchmark Minerals' Federico Gay said that Rio and Codelco would have to prioritize carefully. Both companies are facing too many challenges, at a time when it is difficult to justify large investments in lithium.

Rio Tinto will have a majority in a technical committee, with Codelco. Once production starts, the two companies will split 50-50. This is according to an application filed with Chile's financial regulator. Reporting by Daina-Beth Solomon in Santiago, Clara Denina from London and Rod Nickel in the editing department.

(source: Reuters)