Ucore Rare Metals — Kingston, Ontario

A 52-stage RapidSX demonstration plant that separates third-party mixed rare earth oxide and carbonate into individual oxides at pilot scale, and produces qualification samples for magnet makers. It is the proving ground for the flowsheet being built at Alexandria, Louisiana, and is the site of a conditionally funded but not yet started commercial samarium and gadolinium plant.

At a glance

Founded: 2023 — The Commercialization and Demonstration Facility at Kingston completed commissioning in the fourth quarter of 2023. The RapidSX process it demonstrates was developed by Innovation Metals Corp., which Ucore acquired on May 11, 2020.
Headquarters: Kingston, Ontario, Canada. Parent company head office is Halifax, Nova Scotia.
Ownership: Wholly owned by Ucore Rare Metals Inc. (TSXV: UCU; OTCQX: UURAF).
Revenue: Not publicly disclosed. This company does not publish revenue and no named third party has published an estimate of it.
Pre-revenue. Ucore's management discussion and analysis for the nine months ended September 30, 2025 states that the company has no operating revenues, and no revenue is broken out for the Kingston facility. Oxide produced at Kingston has been shipped as qualification samples.
Source

Capacity

Each date below links to the document the figure came from. A capacity figure with no source is not on this page.

What	Figure	Status	As of
RapidSX Commercialization and Demonstration Facility — a 52-stage demonstration plant, material processed across seven separation campaigns from December 2023 to January 2026	1.76 t of REO equivalent over 5,718 operating hours. This is cumulative over two years, not an annual rate.	Pilot scale	2026-04-07
Separation circuits demonstrated at Kingston — lanthanum-cerium, neodymium-praseodymium, samarium-europium-gadolinium, samarium, gadolinium, the holmium-yttrium-erbium-thulium-ytterbium-lutetium group, terbium-dysprosium, terbium and dysprosium	no tonnage published	Pilot scale	2025-12-11
Neodymium-praseodymium oxide at 99.5% or better, from heavy mixed rare earth oxide of ionic clay origin, shipped as qualification samples to magnet manufacturers	no tonnage published	Pilot scale	2026-06-22
Dysprosium oxide at 99.9%, from approximately 2 t of mixed rare earth oxide from a third-party Western ionic clay source, produced for Japanese, South Korean and United States customer qualification	no tonnage published	Pilot scale	2026-07-07
Commercial samarium and gadolinium refining plant at Kingston	no capacity published and no date published. Conditional approval was given on October 31, 2025 for up to C$36.3 million — C$26.3 million non-repayable from the Natural Resources Canada Global Partnerships Initiative and C$10 million from FedDev Ontario — contingent on due diligence and the execution of a contribution agreement. The funding is not drawn and the plant is not under construction.	Announced	2025-10-31

Narrative

Ucore's Commercialization and Demonstration Facility at Kingston, Ontario completed commissioning in the fourth quarter of 2023 and is the only place Ucore has separated rare earths. It is a 52-stage RapidSX demonstration plant carrying roughly 600 sensors and run by a single operator. Ucore's technical and economic assessment, accepted by the United States Department of War in April 2026, records 1.76 metric tons of REO equivalent processed across seven separation campaigns and 5,718 operating hours between December 2023 and January 2026. The plant has demonstrated separation circuits across the full series including terbium and dysprosium, produced neodymium-praseodymium oxide at 99.5% or better in June 2026 and dysprosium oxide at 99.9% in July 2026, both shipped as qualification samples. Canadian federal support has come through a Natural Resources Canada award announced February 5, 2024 and an Ontario Critical Minerals Innovation Fund award of $500,000 in January 2025. A larger conditional approval of up to C$36.3 million for a commercial samarium and gadolinium plant at Kingston was announced October 31, 2025; it remains contingent on due diligence and a contribution agreement, and no capacity or date has been published. Ucore's commercial separation build is at Alexandria, Louisiana and is profiled separately.

Where public sources disagree

Cumulative operating hours at the demonstration plant are given four different ways: approximately 5,700 hours in a release of December 11, 2025; 5,718 hours to January 2026 in the technical and economic assessment; approximately 6,000 hours in a release of February 17, 2026; and more than 7,400 run-time hours on the company's RapidSX page as of September 2026.
Tonnage processed does not reconcile across two company documents. The technical and economic assessment of April 7, 2026 gives 1.76 metric tons of REO equivalent as the cumulative total across seven campaigns from December 2023 to January 2026, while the dysprosium release of July 7, 2026 describes a single campaign that started with approximately 2 metric tons of mixed rare earth oxide. The likely explanation is that one figure is contained REO and the other bulk feed, but the company does not say so.
The Natural Resources Canada award is given as $4.2 million in the Government of Canada announcement of February 5, 2024 and as $4.28 million in Ucore's management discussion and analysis.

Sources

Department of War accepts Phase 1 final report and RapidSX technical and economic assessment — Ucore Rare Metals Inc. (2026-04-07)
Ucore demonstrates Louisiana SMC heavy rare earth processing flowsheet at Kingston — Ucore Rare Metals Inc. (2024-09-12)
Ucore produces NdPr oxide and ships qualification samples to magnet manufacturers — Ucore Rare Metals Inc. (2026-06-22)
Ucore produces 99.9% dysprosium oxide sample material — Ucore Rare Metals Inc. (2026-07-07)
Conditional approval from the Government of Canada for up to C$36.3 million — Ucore Rare Metals Inc. (2025-10-31)
Canada announces over $4 million to support critical minerals value chain in Ontario — Natural Resources Canada (2024-02-05)
Ucore awarded funding by Ontario Critical Minerals Innovation Fund — Ucore Rare Metals Inc. (2025-01-21)

How this page is sourced

Everything here comes from public sources — company filings, annual reports, exchange announcements, government releases and trade press. Every figure is linked to the document it came from and carries the date that document was published, because a capacity number without a date is not a fact, it is a rumor with a decimal point.

What is deliberately absent: material nonpublic information. I have spent more than two decades in this industry and a good deal of what I know about these companies I learned under NDA. Those obligations do not expire and they do not bend for a website. Nothing I have been told in confidence appears here in any form, and nothing on this page — or missing from it — should be read as a signal about what I know privately. I hold NDAs absolutely. It is the reason clients tell me things.

Judgment is the other thing left out on purpose. This page reports what has been published and who published it. Whether a target is credible, whether a ramp will hold, whether a capacity figure survives contact with the plant behind it — that is the work I do for clients, and it does not belong in a free reference page.

Where public sources disagree, I say so rather than picking a winner. Where a figure has not been published, the field says so rather than carrying an estimate. An empty field is information too.

Public filings tell you what a company has said. Whether it holds up is a different question, and the one I get hired to answer.

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