Critical Metals Corp Confirms Metallurgical Test Work Results at Tanbreez Support Refinery JV in Romania

Professor Tony Tang appointed as the independent reviewer of metallurgical test work, process design and associated studies

2016 AMTEC/ALS TREEs recovery results successfully replicated, with eudialyte and mixed-concentrate recoveries confirmed

Repeatability on 2016 AMTEC laboratory program demonstrated under the 2025 test work

Acquisition of 300~500 kg/hr Proof-of-Concept Pilot Plant for approximately $2 million completed; commissioning expected in 2nd quarter 2026

Integration of new high-intensity magnetic separation technology into the Proof-of-Concept Pilot Plant is expected to positively influence project economics and final flowsheet design

50:50 Joint Venture between Critical Metals Corp and Nuclearelectrica Romania will be designed collaboratively by both parties, informed by early concentrate production from the Proof-of-Concept Pilot Plant

NEW YORK, Dec. 11, 2025 (GLOBE NEWSWIRE) -- Critical Metals Corp. (Nasdaq: CRML) (“Critical Metals Corp.” or the “Company”), a leading critical minerals mining company, today announced that the historical pilot work done by AMTEC / ALS has been successfully replicated in the 2025 test work program undertaken at Fremantle Metallurgy laboratories under the review of independent consultant Professor Tony Tang. Professor Tony Tang utilized a duplicate ore sample to that used in the original 2016 Tanbreez study.

“We are proud to receive more compelling results from our test work at Tanbreez, which continues to underscore the opportunities ahead for Critical Metals Corp,” said Tony Sage, CEO and Chairman of Critical Metals Corp. “This test work advances our plans for a pilot plant, which is a key milestone in the commercial roadmap for both Tanbreez and the rare earth refinery through our Romanian JV. Critical Metals Corp’s integrated mine-to-metals approach, positions us as one of the only companies advancing a fully Western-aligned rare earth supply chain focused on security of supply and strategic independence.”

During the replication of the 2016 metallurgical work completed by ALS/AMTEC, the laboratory team confirmed the original process flow sheet and demonstrated the ability to separate eudialyte, arfvedsonite, and feldspar into high-grade concentrates using a dry magnetic separation route. A second phase of the program applied the latest 2025 magnetic recovery technology from a leading global supplier of magnetic separation systems. The multistage, multi-roller high-intensity permanent rare-earth magnetic circuit—operating at more than 12,000 gauss—achieved an ultra-clean eudialyte final concentrate by further removing residual gangue material and generating a high-quality TREEs (Total Rare Earth Elements) concentrate. In addition, the process produced a secondary mixed concentrate containing significant TREEs that had not been recoverable using earlier generations of technology.