On May 21, 2026, Oak Ridge National Laboratory will host a DOE National Lab Discovery Series webinar to commercialize a portfolio of rare earth recovery technologies, actively seeking licensing partners. Headline innovations include selective leaching via polyaminocarboxylate chelators, an integrated platform to recover heavy REEs and uranium from phosphate mining waste, and a peer-reviewed flowsheet demonstrating 92-plus percent purity REE solids from simulated mine tailings. The pitch comes with a credible commercial proof point: ORNL's lithium recovery technologies are already operating at Element3's Permian Basin facility, illustrating a clear pathway from federal lab bench to commercial production.
Introduction
Seven weeks after China's April 2025 export controls sent rare earth magnet shipments down 74 percent year-over-year and temporarily shuttered Ford's Chicago assembly plant, the U.S. government's most productive rare earth research institution is making its most aggressive commercial push in years. On May 21, 2026, Oak Ridge National Laboratory will host a DOE National Lab Discovery Series webinar showcasing a portfolio of critical mineral recovery and separation technologies, with researchers explicitly seeking licensing partners and commercial collaborators.
The webinar arrives at a moment of unusual urgency. China controls more than 90 percent of global rare earth processing, and its dominance over heavy rare earth elements (HREEs) such as dysprosium and terbium is even more acute, approaching a virtual monopoly on processing capacity. The IEA's Global Critical Minerals Outlook 2025 found that China leads refining for 19 of 20 strategic minerals tracked, with an average market share of 70 percent. Against that backdrop, the technologies ORNL is bringing to market on May 21 represent something genuinely different from most domestic supply chain announcements: not a new mine permit or a plant construction timeline, but a set of chemical process innovations capable of upgrading feedstocks that already exist inside the United States, at costs and scales that could realistically attract private capital.
The portfolio spans five distinct technology families, anchored by two that address the largest untapped domestic REE feedstock categories: phosphate mining waste streams and low-grade mine tailings. A 2026 peer-reviewed paper in Separation and Purification Technology, led by ORNL researcher Dong A. Kang, provides the most detailed public validation to date of what the laboratory's sequential leaching and solvent extraction approach can actually deliver from real-world feedstock analogs. The results are promising enough to justify serious commercial attention, even as the authors are careful to frame them as a proof of concept requiring further validation.
The Kang et al. Flowsheet: What 92 Percent Purity From Mine Tailings Actually Means
The cornerstone technical publication underpinning the May 21 event is a 2026 paper by Kang, Trusty, Dangwal, Manard, Paranthaman, Bhave, Islam, Stanberry, and colleagues, published in Separation and Purification Technology (volume 392, article 137161). The study developed and validated a separation flowsheet that integrates sequential leaching with a two-stage solvent extraction process to recover high-purity heavy and light REEs from a simulated mine-tailing concentrate containing 2.4 weight percent total REEs, modeled after material from the Pea Ridge iron mine in Missouri.
The key insight driving the flowsheet design is deceptively simple: a single-step acid leach is a poor starting point for solvent extraction because it mobilizes too many impurities alongside the target REEs, degrading downstream selectivity. ORNL's sequential leaching approach uses controlled pH adjustment to selectively precipitate REEs while retaining the bulk of impurity ions in solution, producing an REE-enriched leachate with roughly twice the rare earth concentration and half the impurity load compared to single-step leaching. That upstream enrichment step meaningfully improves the economics of everything that follows.
The subsequent solvent extraction stage uses three industry-standard extractants in sequence: Cyanex 572 preferentially extracts HREEs and iron over LREEs; tributyl phosphate (TBP) is then used to strip the iron; and the LREE-rich raffinate stream is processed separately with di(2-ethylhexyl)phosphoric acid (D2EHPA). Both HREE- and LREE-enriched solutions are then converted to solid products via oxalate precipitation. The resulting solids reached purities of approximately 92.0 to 93.5 weight percent for HREEs and 92.1 to 92.8 weight percent for LREEs, measured as a fraction of total REE content, with total REE purities reaching 94 to 95.7 weight percent.
Those purity levels are not yet the greater-than-99.5-percent benchmark achieved by ORNL's membrane solvent extraction (MSX) technology applied to scrap magnets, but they are meaningful as a starting point from a feedstock that currently has essentially zero commercial value. The authors are explicit about the study's limitations: experiments used simulated rather than real tailings to avoid complications from trace radioactive elements, and the work explicitly calls for future validation with actual mine material, pilot-scale demonstrations, techno-economic analysis, and environmental life-cycle assessment. The Pea Ridge mine itself is notable context here: Caldera Holding, the mine's owner and developer, previously entered a nonexclusive R&D licensing agreement with ORNL to apply the MSX technique to its ores, and Jim Kennedy of Caldera has described the site as containing 700,000 tons of REEs including significant levels of terbium, dysprosium, and holmium.
Phosphate Waste: The 3.7-Billion-Ton Opportunity Nobody Wants to Process
If the mine tailings flowsheet represents a medium-term opportunity, the phosphate waste stream technology may represent an even larger one. Phosphogypsum (PG), the calcium sulfate byproduct generated during the conversion of phosphate rock to phosphoric acid, is one of the most consequential waste streams in U.S. industrial chemistry. Globally, PG generation is approaching 300 million tons per year; since 1994, an estimated 3.7 billion tons have accumulated in stacks worldwide. Because over 60 percent of the REEs present in phosphate rock typically remain in the PG rather than reporting to the phosphoric acid product, those stacks represent a passive accumulation of rare earth inventory at concentrations that, while low in absolute terms, are substantial in aggregate. At a conservative 0.1 percent REE content, the global PG stacks may hold more than 3.7 million tons of rare earths in place.
The challenge has always been processing economics. PG is acidic, mildly radioactive due to co-concentration of uranium and radium, and voluminous enough that per-ton processing margins have to be extremely thin to make sense at scale. ORNL's phosphate waste recovery platform attacks this problem by treating it as a multi-product recovery challenge rather than a single-target extraction problem. The integrated process recovers heavy and light REEs, uranium, and high-purity gypsum simultaneously, while also recovering phosphoric acid and returning it to the primary production circuit, which increases overall product yield from existing operations without additional mining inputs.
Prior ORNL work on phosphoric acid sludge, a distinct but related feedstock with REE concentrations up to 3,000 parts per million and solids contents of 30 to 40 weight percent, demonstrated that a continuous-flow decanter centrifuge could achieve approximately 95 percent phosphoric acid recovery and 90 percent REE recovery in a single pass. The sludge technology established that the separation chemistry is tractable at meaningful scale; the integrated phosphate waste platform extends that logic into a full multi-product workflow suitable for deployment at existing phosphate mining and phosphoric acid production sites. For processors already generating PG as a liability, the prospect of converting it into a revenue stream covering REEs, uranium, and high-purity gypsum simultaneously represents a fundamentally different economic proposition than building a standalone REE recovery facility.
The Portfolio's Other Technologies: Chelators, Membranes, and Modular Extractants
Beyond the two flagship waste-stream technologies, ORNL is presenting three additional innovations at the May 21 webinar. The selective leaching technology using polyaminocarboxylate chelators targets the earliest stage of the processing chain, improving selectivity during the initial dissolution step before any solvent extraction begins. By using chelating agents that preferentially bind REEs over common matrix elements such as iron, aluminum, and calcium, the process reduces the chemical load carried forward into more expensive downstream stages. This is particularly relevant for heterogeneous feedstocks like mine tailings where impurity chemistry varies substantially from sample to sample.
The NEAREST technology (Neutral Ligand-Based Rare Earth Element Separation Technology) applies a neutral-ligand solvent extraction approach to REE separation itself, claiming improved selectivity while reducing the number of processing stages, capital costs, and waste generation relative to conventional acid-based processes. Conventional REE separation plants require hundreds of mixer-settler stages precisely because the elements' similar ionic radii and coordination chemistry make sequential separation extraordinarily difficult; any technology that meaningfully compresses the number of required stages has substantial economic implications.
The fifth technology in the portfolio takes a different approach to the same selectivity problem. ORNL researchers have developed a class of flexible amphiphilic chelating extractants with modular architecture, allowing the selectivity profile to be tuned by modifying pendant chelating arms or lipophilic tails with different functional groups. Notably, these extractants are designed to favor lighter lanthanides over heavier ones, which is the reverse of typical separation trends. That reversed selectivity is particularly useful for recycling applications where LREE-rich materials such as end-of-life neodymium magnets need to be processed efficiently. Combined with the MSX membrane platform that ORNL has already commercialized through Momentum Technologies (achieving greater-than-95-percent recovery at greater-than-99.5-percent purity from scrap magnets), the portfolio covers essentially the full range of REE separation challenges from primary ore through secondary and waste feedstocks.
Element3 and the Commercialization Playbook ORNL Is Trying to Replicate
The most important context for evaluating the May 21 licensing push is the Element3 precedent. In May 2024, ORNL licensed a collection of lithium recovery technologies (described variously as six or seven technologies in different DOE documents) to Element3, a Texas-based company extracting lithium from oilfield produced water in the Permian Basin. On February 6, 2026, Element3 announced the successful production of lithium carbonate from Permian Basin wastewater, a milestone the company characterized as America's first new lithium mining in more than half a century. The ORNL-Element3 partnership subsequently received a 2026 Federal Laboratory Consortium Excellence in Technology Transfer Award.
Element3's process achieves greater than 85 percent lithium recovery from produced water containing less than 40 parts per million lithium, which is a genuinely low-concentration feedstock by any standard. The commercial viability of that operation rests on the same logic that ORNL is now applying to REE recovery from mine tailings and phosphate waste: existing infrastructure, existing feedstock, and a processing innovation that converts a waste or byproduct stream into a saleable product. Hood Whitson, Element3's CEO, put it directly: the company is creating materials for tomorrow's economy from today's waste, and ORNL's technology portfolio is what makes that economically tractable.
The researchers behind the REE portfolio have deep licensing histories of their own. Dr. Ramesh Bhave and Dr. Syed Islam of ORNL's Chemical Sciences Division are named in 26 inventions and five active licenses related to REE recovery. Islam received the 2024 R&D 100 Award and the ORNL Innovation Award in 2020, 2023, and 2025. Bhave has described the MSX platform's advantages over conventional hydrometallurgy in stark terms: fewer chemicals, costs 100 times lower, operation at low temperatures and pressures, acid and water recycling, minimal waste generation, and scalability from bench to commercial scale. Dr. Parans Paranthaman, a Corporate Fellow in ORNL's Chemical Sciences Division and a Fellow of the National Academy of Inventors, has co-authored more than 480 journal publications and holds 65 issued U.S. patents, with technologies licensed to more than ten industries. The depth of the inventor team behind this portfolio is not incidental; it is the primary reason ORNL can point to operating commercial processes rather than just promising laboratory results when making its licensing case.
For prospective licensees, the webinar on May 21 will cover how companies can evaluate and explore licensing opportunities, with a live Q&A involving both the research and technology transfer teams. Contact information for ORNL's partnerships office (partnerships@ornl.gov, 865-574-1051) is publicly available for companies that want to engage before or after the event.
Supply Chain Urgency and the TRL Reality Check
It would be a mistake to read the ORNL portfolio announcement as a supply chain solution that is months away from deployment. The Kang et al. paper is explicit that their work is a proof-of-concept using simulated feedstock, and the broader literature on advanced REE separation technologies notes that most new separation systems beyond traditional liquid-liquid extraction are operating at Technology Readiness Levels of 5 or below. Moving from TRL 4-5 bench work to a licensed, operating commercial facility typically takes five to ten years under optimistic assumptions. The gap between a promising laboratory flowsheet and an industrial solvent extraction plant, with its capital intensity, chemical handling infrastructure, and environmental compliance requirements, is substantial.
That context matters for interpreting what the May 21 webinar represents. It is not a product launch; it is a call for the industrial partners, capital, and commercial expertise needed to bridge that gap. The polyaminocarboxylate leaching technology and the mine tailings flowsheet are at different readiness levels than the MSX platform, which has already been demonstrated at scale with Momentum Technologies and validated through Element3's commercial operations. Companies evaluating the portfolio will need to assess each technology family individually against their own feedstock characteristics, capital position, and timeline requirements.
What the ORNL push does represent, unambiguously, is an acceleration of the federal laboratory commercialization pipeline at a moment when the geopolitical pressure to do so has never been higher. Building on my earlier analysis of the Dy/Tb chokepoint in May 2026, the Western supply chain's vulnerability is most acute not at the mining stage but at the processing and metallization stages, and that is precisely where ORNL's portfolio is concentrated. Sequential leaching, membrane solvent extraction, neutral ligand separation, and modular chelating extractants are all processing innovations, not mining innovations. They address the part of the supply chain where China's dominance is most entrenched and where domestic alternatives are most scarce. If even two or three of the five technologies in the portfolio find commercial homes in the next three to five years, the aggregate impact on U.S. HREE processing capacity could be material.
Conclusion
ORNL's May 21 licensing webinar is best understood as a convergence of three timelines that have been running in parallel: a decade-long investment in federally funded REE separation research that has now produced a peer-reviewed, patent-backed technology portfolio; a commercial proof point in the Element3 lithium operations that demonstrates ORNL's technologies can transition from laboratory to operating plant; and an acute geopolitical disruption in REE supply chains that has finally created the industrial urgency and policy environment necessary to attract private capital to domestic processing innovation.
The Kang et al. paper's demonstration of 92-plus percent purity REE solids from simulated mine tailings containing 2.4 weight percent total REEs is not a commercial breakthrough by itself. But it is a credible scientific foundation for the next phase of development, and the phosphate waste stream platform, with its multi-product recovery logic applied to the 3.7-billion-ton global PG inventory, represents one of the most economically coherent domestic REE feedstock strategies currently available. The question after May 21 is whether U.S. industry is ready to move from recognizing the supply chain problem to funding the processing chemistry that solves it.
For companies operating in phosphate mining, iron ore processing, or materials recycling, the webinar represents a rare opportunity to access a decade of federally funded separation IP at a moment when the cost of inaction is becoming quantifiable in plant shutdowns and import dependencies. ORNL's technology transfer office is reachable at partnerships@ornl.gov. The webinar begins at 2:00 PM Eastern on May 21, 2026.