Critical Metals Corp. (NASDAQ: CRML) has confirmed that new metallurgical test work at its Tanbreez Rare Earth Project in southern Greenland successfully replicates historical pilot results and supports the design of a planned refinery joint venture in Romania.
The latest programme, overseen by independent consultant Professor Tony Tang and carried out at Fremantle Metallurgy laboratories, repeated the 2016 AMTEC/ALS pilot work using a duplicate ore sample. The work validated the original process flowsheet and again demonstrated the ability to produce high-grade concentrates of eudialyte, arfvedsonite and feldspar via a dry magnetic separation route.
A second phase of testing introduced modern high-intensity magnetic separation technology. This multistage circuit, operating at more than 12,000 gauss, delivered a cleaner eudialyte concentrate and generated a separate mixed concentrate carrying additional total rare earth elements that earlier-generation equipment had been unable to recover. Independent laboratories conducted full metallurgical and elemental analyses to verify the results and minimise laboratory bias.
On the back of these outcomes, Critical Metals has completed the acquisition of a 300–500 kg/hour proof-of-concept pilot plant for approximately US$2m, with commissioning targeted for the second quarter of 2026. The pilot facility is designed to run at around a 1:200 scale relative to the planned 100 tonnes per hour commercial plant, generating continuous design data, weekly batches of eudialyte concentrate for offtake partners and operational training opportunities for Greenlandic operators once deployed to site.
The company intends to fold the updated process data and new separation technology into Tanbreez’s economic modelling and feasibility work. The goal is to position Tanbreez as a leading global source of high-grade rare earth concentrate feeding a 50:50 Romanian refinery joint venture between Critical Metals and Nuclearelectrica Romania. The refinery, to be built near Brașov, is expected to produce high-purity rare earth salts and metals, as well as advanced permanent magnet materials aimed at NATO and EU supply chains.
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