By Brazil Stock Guide – India’s Altmin has committed $40 million (approximately R$ 220 million) to acquire a 33% stake in the refining plant of Companhia Brasileira de Lítio (CBL), a Brazilian lithium producer based in the state of Minas Gerais. The investment will be fully allocated to expand the refinery’s capacity from 2,000 tonnes per year to 6,000 tonnes per year of battery-grade lithium carbonate and lithium hydroxide — key inputs for electric vehicles and grid-scale energy storage.
The transaction strengthens Brazil’s strategy to move beyond raw mineral exports and deepen its role in the higher-value chemical processing stage of the lithium supply chain. Minas Gerais accounts for more than 90% of Brazil’s lithium exports and hosts the country’s largest known reserves. However, like many resource-rich economies, Brazil has historically captured less value in downstream processing compared with Asian refiners.
CBL says it is the only company outside China with full industrial qualification to produce battery-grade lithium carbonate with purity above 99.8%. With Altmin’s entry, the refinery gains both capital and potential strategic alignment with India’s growing battery materials ecosystem, as New Delhi pushes to secure reliable supply chains for electric mobility and energy transition technologies.
Strategic backdrop
The announcement comes during President Luiz Inácio Lula da Silva’s official visit to India, where he is meeting Prime Minister Narendra Modi to discuss cooperation in critical minerals and rare earths. While the Altmin deal is a private-sector investment, it aligns with a broader geopolitical shift as countries seek to reduce concentration risks in mineral processing and diversify away from China-dominated supply chains.
For India, securing access to lithium chemicals — not only raw ore — is central to its ambition to scale domestic battery manufacturing and strengthen energy security. For Brazil, the investment reinforces its effort to position itself not just as a supplier of lithium ore, but as a competitive player in refined, battery-grade materials.
The result is a convergence of corporate strategy and economic diplomacy: Indian capital accelerates Brazil’s downstream expansion, while bilateral talks signal a longer-term framework for cooperation in critical minerals and energy transition supply chains.
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