New Breakthroughs in Global Magnesium Industry Technology: Emergence of Seawater Magnesium Extraction and Solid Waste Recycling Technologies [SMM Survey]

This week, SMM conducted an in-depth survey on the emerging capacity layout of the global magnesium industry, focusing on two enterprises that have achieved breakthrough progress in the field of magnesium smelting technology, marking a new wave of technological innovation in the global magnesium industry.

Magrathea (US): Breakthrough in Magnesium Extraction from Seawater, Aiming for Carbon Neutrality
Magrathea, a startup in California, US, recently launched a new generation of magnesium chloride electrolyzers at its pilot plant in Oakland. By leveraging innovative electrolysis technology, it extracts magnesium metal from seawater, a breakthrough that has secured $100 million in funding from the US Department of Defense. As a core component of the first commercial magnesium electrolyzer plant plan in the US in 50 years, this technology employs a unique seawater electrolysis process to directly produce carbon-neutral magnesium metal, offering significant environmental advantages over traditional processes. Magnesium metal, a critical strategic material, is in robust demand across aerospace, defense, automotive manufacturing, and other sectors. Currently, 90% of the global supply is concentrated in China and Russia. Magrathea plans to establish a demonstration plant by 2026 and achieve mass production by 2027. It has already initiated strategic cooperation negotiations with multiple multinational enterprises, and the commercialization of its technology may reshape the global magnesium supply chain landscape.

Latrobe Magnesium (LMG) (Australia): Utilizing Solid Waste as Resources, Creating a Circular Economy Model
Latrobe Magnesium (LMG) in Australia is constructing a magnesium demonstration plant with an annual capacity of 1,000 mt in Victoria, expected to commence operations in 2025. This project innovatively adopts hydrometallurgy technology to extract magnesium metal from fly ash generated by lignite power generation, achieving high-value utilization of industrial solid waste. Compared to traditional processes, this technology not only produces 99.9% high-purity magnesium but also co-produces high-value-added by-products such as supplementary cementitious materials and silica, with a comprehensive resource utilization rate close to 100%. The company plans to expand its capacity to 10,000 mt/year after the successful operation of the demonstration plant, competing in the global market with its low carbon emissions and cost advantages. This project not only provides a stable source of magnesium supply for Australia but also offers a new technological pathway for the green transformation of the global magnesium industry.

Electrolysis, as the most promising new technology for magnesium smelting, is becoming a focus of R&D efforts in various countries due to its environmental characteristics and scalability advantages. Currently, both Magrathea's and LMG's projects are in the construction and planning stages, with limited short-term impact on the existing magnesium market supply and demand. However, as countries increase their emphasis on the security of critical mineral supply chains and continue to advance carbon neutrality goals, the commercialization of these innovative technologies may reshape the future global magnesium industry landscape. SMM will continue to track the project progress and promptly assess the impact of new technologies on market prices and the supply-demand relationship.