Highlights
- Critica Limited appointed CSTME to design and operate a pilot-scale beneficiation plant for testing rare earth mineral processing techniques.
- The pilot program aims to process a 3,000 kg bulk sample using magnetic separation and flotation to create a high-grade intermediate concentrate.
- Initial bench-scale tests show promising results with approximately 95% mass rejection and over 800% grade uplift.
- The improved processes potentially enhance project economics.
Critica Limited (ASX: CRI (opens in a new tab)) has taken another technical step forward at its 100%-owned Jupiter Rare Earths Project in Western Australia (opens in a new tab), appointing the Centre for Science and Technology of Mineral and Environment (GAVAQ, also known as CSTME) in Hanoi to design, construct, and operate a closed-circuit pilot-scale beneficiation plant, a small, trial version of a full processing plant. Such facilities are built to test whether laboratory (bench-scale) results can be scaled up to something closer to industrial reality.
The program will process a 3,000kg run-of-mine bulk sample, testing a flowsheet that combines magnetic separation and flotation. The goal: deliver a high-grade intermediate concentrate that will feed downstream testwork and provide inputs to Jupiter’s upcoming Scoping Study.
Why It Matters
The beneficiation pilot follows earlier engagements with ANSTO and Minutech (an independent laboratory specializing in metallurgical testing for rare earth minerals), which are optimising leach and hydrometallurgical processes. Together, these programs form an integrated pathway toward producing a Mixed Rare Earth Carbonate (MREC) — the saleable product that buyers in magnets, EVs, and defense supply chains seek.
Critica’s bench-scale tests have shown promising results, with ~95% mass rejection and a greater than 800% grade uplift. This could lead to smaller leach plants, reduced reagent use, and improved economics. The pilot will test whether those results can be scaled up under closed-circuit conditions.
Key Outputs Expected
- Decision-grade data: Recoveries, concentrate specifications, reagent suite/consumption, operability, and tailings characteristics.
- Direct Scoping Study inputs: Feeding into engineering design and project economics.
- Parallel advancement: Beneficiation, hydrometallurgy, and product chemistry advancing at once, supporting eventual offtake negotiations.
Investor Questions Left Unanswered
- Costtransparency: How much will this pilot program cost shareholders, and how is it being funded?
- Market positioning: Which specific end-users (magnet makers, OEMs, defense contractors) might be targeted for MREC offtake?
- Regulatory risk: How will Australian regulators view a beneficiation pilot hosted offshore in Vietnam rather than domestically?
- Timeline to revenue: When will Critica realistically reach commercial-scale production, given permitting, financing, and market uncertainties?
REEx Takeaway
Critica’s move, based on its press release, underscores a broader “upgrade-first” trend in the rare earth sector: rejecting mass early in the flowsheet to improve project economics downstream. For investors, the big test will be whether pilot-scale results confirm the laboratory promise — and whether Critica can lock in buyers at attractive terms.
Sources: Critica Limited, ASX Announcement
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