Critical Minerals – What Are They?

The term ‘critical minerals’ has several loosely related definitions. An academic paper defines it as “raw materials for which there are no viable substitutes with current technologies, which most consumer countries are dependent on importing, and whose supply is dominated by one or a few producers”. Whereas the Australian government defines it more loosely as minerals “essential to our modern technologies, economies and national security…that are vulnerable to supply chain disruption”.

Periodic table of critical minerals list for the EU

And while the government definition takes on a more geopolitical slant to the definition, the sentiment between the two are the same – modern day living would not exist without reliable access to these materials. And since it has a political slant, the list of minerals can differ between countries. The periodic table on the previous page highlights the elements (and minerals at the bottom) on the EU critical minerals list. Helium (He) is listed – but found nowhere on the Australian list. Conversely, molybdenum (Mo), nickel (Ni) and high purity alumina are on our critical minerals list but not in the EU. So the term ‘critical minerals’ is slightly different from region to region, but what about rare earth elements?

THEIR IMPORTANCE

Critical minerals are vital to the development of future technology in thin film electronics, renewable energy (storage and harvesting) systems, and advanced materials manufacturing. From rare earth elements essential for magnets in wind turbines and electric vehicles to lithium powering rechargeable batteries, these minerals underpin the modern economy’s shift on low carbon footprints towards net zero future by 2050.

Elements such as lithium, cobalt, nickel, and copper hold the key to unlocking Australia’s potential in the global market. Australia has significant reserves of many critical minerals, positioning itself as a key player in the global supply chain for the energy transition. With vast deposits (as well as several rare earth elements, vanadium and tungsten, Australia has the potential to become a leading supplier in the rapidly expanding market for these resources. But these materials are much more important to modern day life than the decarbonisation of society and the energy transition push.

SPARC Grant Success and Future Prospects

In our March newsletter, we mentioned that SPARC was submitting a grant application in the federal government’s Critical Minerals Development Program. The program is designed to fund projects which increase the supply chain of critical minerals in Australia to further boost the economy in the renewable energy sector. I’m happy to say that SPARC was one of thirteen successful application to receive funding! Fellow awardees are the likes of Evolution Mining, Ecograf (with ANSTO), and IGO Ltd (a refinery partner of Andrew Forrest), which highlights the strength and competitiveness of the program.

Froth flotation process

Our project involves further development and commercialisation of lithium selective frother additives for spodumene ore processing. Currently, the refining of lithium from spodumene ore is roughly 85% efficient, meaning 15% of the lithium resides in the tailings, along with other valuable minerals. Our technology will improve the extraction efficiency to between 90 and 95%, giving a sizable boost to the lithium supply chain.

The economic benefits of this project are quite massive. Based on last year’s mining figures of 55 kilotonnes of lithium extracted, this technology could extract an extra 6 kilotonnes of lithium residing in the tailings, worth more than USD$400M – in Australia alone! Therefore, this could significantly add to the Australian economy and the lithium supply chain. But there is much more than just an economic benefit to this technology, there is an environmental aspect as well.

Mining and mineral processing generates significant amounts of carbon dioxide, and other greenhouse gases, into the environment. And while it’s unavoidable, it can be mitigated by improving the efficiencies of the process involved in the extraction. According to estimates, 9 tonnes of CO2 are generated for every tonne of lithium carbonate equivalent (LCE) refined. Roughly a third of this, 3 tonnes of CO2, is due entirely to the mining and extraction process (here in Australia), not the shipping and reprocessing. So, by improving the extraction efficiency to increase the supply chain, this process would mitigate roughly 17 kilotonnes of CO2 per year – the equivalent of removing 3700 cars from the road!

Check out the rest of our June Newsletter below for more on this project, as well as what other work SPARC is looking to develop and how you could make an impact.

SPARC at the AFR Business Summit

Two short weeks ago, the Harrison Group attended the AFR Business Summit. This year’s theme for the summit was ‘Crunch Time for Prosperity’, which couldn’t be anymore appropriate. Given the ongoing war in Ukraine, the slowing (but still prevalent) COVID-19 pandemic and rising global interest rates (and recession fears), this is a very turbulent time. Given these events, and that this is a business summit, you’d be right to think that some of the major topics would relate to say increased productivity, improving the Australian manufacturing sector, or finding ways to ensure reliable raw material supply chains. All of these were touched on, but so too was climate change and Australia’s potential response to a growing global renewables sector.

Regardless of the speaker or panel members, the drive to renewable, green energy and its impacts on business and trade were a major topic. With the Australian economy so dependent on the mining sector, the move away from fossil fuels in the coming years and decades is a cause of concern. But, innovation can and should drive us into new fertile business ventures. As battery storage systems and EVs grow in use and demand, the critical minerals needed to support these industries will also grow. Australia is uniquely positioned for this, as we have such a large amount of these minerals, especially lithium, throughout the country.

Along with the critical minerals and mining sector, the growing focus on the green hydrogen economy was also a hot topic at the summit. And while this discussion was due in part to Andrew Forrest’s Q&A talk during the summit, the sentiments were also echoed by the OECD Secretary General, Mathias Cormann. Green hydrogen production probably won’t be useful for battery storage or fuel cell vehicles – but it will have a place in steel production, firming energy supply, potentially diesel replacement and agriculture spaces. Regardless of end use, when European countries are signing contracts for green and blue hydrogen supplies, the market demand is there and growing.

Along with the science and technology of the renewable energy sector, the other hot topic was the Inflation Reduction Act in the US and its implications for climate and energy. The IRA is the single largest investment by the US government into clean energy and climate. It is setting the US up to be a world superpower in renewable energy technology, and far and away eclipses the National Reconstruction Fund, still to pass Parliament. And while much of the discussion regarding the IRA and its implications centred around the investment dollars that the US is offering to entice renewable manufacturing there, it doesn’t negate the development of the technology and IP here in Australia. The abundance of wind and solar here far exceeds the US, and that abundance could be used to generate green hydrogen to export to countries overseas. Along with exporting Australian energy supplies, expanding and improving on existing battery technology would allow for rapid electrification of the country and reducing the need for firming energy resources such as natural gas. In either event, the inherent natural resources of Australia, if properly developed through innovation and technological advances, can lead to another prosperity boom for the country.