Europe is repositioning itself in the global critical minerals landscape by leveraging its aluminium and gallium value chains to support semiconductor manufacturing, aerospace engineering, and advanced industrial technologies. As geopolitical pressures and supply chain disruptions have exposed vulnerabilities in high-tech metals, the continent is investing in projects that recover gallium from existing aluminium production streams while expanding recycling and refining capacity.
Gallium: A Strategic Metal Hidden in Aluminium Production
Unlike bulk metals such as copper or aluminium, gallium is not mined directly. It occurs in trace amounts within bauxite, the primary ore for aluminium. During the Bayer refining process, gallium concentrates in intermediate solutions, which can be extracted using specialized chemical technologies.
Historically, China has dominated global gallium production, raising concerns among European policymakers and industries reliant on compound semiconductors for electronics, telecommunications, and defence. To mitigate risks, Europe is developing domestic gallium recovery facilities integrated with aluminium production operations.
One of the most significant projects is in Greece, operated by Metlen Energy & Metals (formerly Mytilineos). The facility is projected to produce 50 tonnes of gallium annually, a substantial contribution given that global production totals only a few hundred tonnes each year. This output has the potential to reshape supply dynamics for gallium-based semiconductors.
Gallium in Advanced Electronics and Energy Systems
Gallium is essential for gallium arsenide (GaAs) and gallium nitride (GaN) semiconductors, which enable high-frequency, high-power electronic devices. Applications include:
- 5G and satellite communications
- Radar systems
- Electric vehicle power electronics
- High-efficiency solar panels
GaN-based devices improve energy efficiency in EVs and renewable energy systems, making gallium critical for Europe’s energy transition and digital infrastructure. By extracting gallium from aluminium refining streams, Europe strengthens the resilience of semiconductor supply chains while reducing reliance on imported metals.
Aluminium Refineries as Industrial Hubs
Europe’s aluminium infrastructure is playing a dual role: producing primary and recycled aluminium while serving as a platform for gallium recovery.
- Dunkirk Aluminium Complex (France): Operated by Aluminium Dunkerque, this facility is expanding with €300–500 million investment, increasing refining and recycling capacity. Aluminium recycling consumes up to 95% less energy than primary production, making it economically and environmentally advantageous in Europe’s high-cost energy context.
- Mykolaiv Alumina Refinery (Ukraine): Historically producing 1.8 million tonnes of alumina annually, Mykolaiv’s restart or modernization could restore critical alumina supply for European smelters and offer additional gallium recovery opportunities.
By integrating gallium extraction into existing operations, these refineries evolve into multifunctional metallurgical hubs, supporting both traditional aluminium markets and high-tech industries.
Strategic Implications for Semiconductors and Aerospace
Securing domestic aluminium and gallium production strengthens Europe’s industrial autonomy in several sectors:
- Semiconductors: Gallium is vital for semiconductor fabrication, high-frequency electronics, and power devices. European initiatives under the Chips Act aim to boost local production, but reliable access to gallium is essential for supply chain security.
- Aerospace and Defence: Aluminium alloys remain critical for aircraft structures, offering lightweight strength and corrosion resistance. Stable domestic supply supports both civilian aviation and defence programs.
Furthermore, the integration of recycling and trace element recovery enhances resource efficiency, reduces waste, and maximizes economic returns from existing industrial systems.
A Circular Approach to Strategic Metals
Europe’s aluminium and gallium projects reflect a broader industrial trend: extracting multiple high-value metals from single mineral streams. This approach combines:
- Primary aluminium production
- Recycling of aluminium scrap
- Gallium recovery from refining streams
By upgrading existing infrastructure rather than relying solely on new mines, Europe is creating a resilient, circular supply chain for metals essential to semiconductors, aerospace, and renewable energy technologies.
