Australia’s resources sector is shifting from a ‘dig and ship’ model toward more onshore value creation. Forecasts point to long-term growth in clean energy metals and minerals, even as other commodity returns soften with lower prices and changing demand. The opportunity is clear: expand domestic processing capability and capture more value across the supply chain.  

Policy momentum is building. The Australian Government has announced a Critical Minerals Production Tax Incentive to support downstream processing and refining of Australia’s 31 critical minerals from 2027–28 to 2039–40, with consultation on design and implementation completed in 2024. For developers and investors, that signals a stronger runway for projects that move beyond concentrate.  

But incentives alone won’t deliver processing capacity at scale. What will: using what Australia already has, proven minerals processing expertise, and applying it confidently to new commodities.  

Where Australia’s processing expertise already runs deep

1) Comminution: familiar circuits, different priorities

Hard rock critical minerals flowsheets often include the same backbone as base and precious metals plants, crushers, screens, mills and classification. The difference is what the mineralogy demands.

For example, spodumene ores can be sensitive to overgrinding, where slimes generation reduces recovery. That shifts the design priority: reduce fines, remove particles at size earlier, and protect valuable liberation rather than simply maximise grind.

The good news is that comminution teams have been tackling overgrinding for decades, and emerging technologies are expanding the toolkit. New comminution and classification approaches aim to remove particles at size before they are reground and improve classification performance so material isn’t unintentionally recycled through high-energy grinding.  

2) Dense media, gravity and flotation: proven workhorses

For many energy transition commodities, the concentration step relies on unit operations that Australia knows well.  

Dense media separation (DMS) and flotation have been central to coal processing for decades, driving deep expertise in medium recovery, circuit stability and operating cost control. Those lessons translate directly. DMS is now widely used as a preconcentration step in iron ore and other ores, while spirals and up current classifiers, refined through mineral sands and iron ore applications, remain powerful tools for fines upgrading.

And the supporting wet-processing circuit elements are already embedded across Australian plants and supply chains: screening, cyclones, thickeners and filtration. Critical minerals circuits may require different design parameters and capacities, but they still leverage the same core engineering logic.  

Skills are the constraint and the opportunity

Australia’s Critical Minerals Strategy 2023–2030 highlights that a skilled, diverse and growing workforce is essential, particularly as the sector moves into downstream processing, and notes persistent shortages across key professions.  

That reality means the industry needs to move on two tracks:

• Accelerate what we already do well by transferring established skills across new commodities and regions.  
• Grow specialist capability for downstream stages such as calcination, leaching, solvent extraction, purification and crystallisation: where materials selection, chemistry and operational risk become more complex.  

Australia has pockets of downstream expertise and strong links to international capability. Scaling the next generation of processing plants will require sustained investment in attraction, training and applied R&D.  

What this means for mine owners and developers

The most valuable shift is mindset: critical minerals processing is not a blank slate. Many of the unit operations required to move further up the value chain are already embedded in mine owners, EPC/EPCM contractors, OEMs and operators.  

The opportunity is to deploy that capability decisively - shaping flowsheets that match each orebody, applying fit-for-purpose comminution and separation strategies, and planning early for the downstream pathway and skills required.  

At Sedgman, we bring minerals processing leadership and an engineering-led, end-to-end approach across study work, design, delivery, operations and optimisation. Our strength is applying proven processing logic with modern ingenuity — transferring learnings across commodities to find the most efficient path between what’s proven and what’s possible.  

If you are developing a critical minerals project, whether you are targeting a concentrate product or planning a downstream refining pathway, our team can help define the right processing strategy and execution approach.