en.Wedoany.com Reported - American Rare Earths Ltd (ASX: ARR), a critical minerals company listed on the Australian Securities Exchange, recently provided further details on the pilot plant execution plan for its Halleck Creek rare earth project in Wyoming, USA. The pilot plant will operate in three stages: grinding and classification; mineral separation and concentration; and leaching, impurity removal, and oxide refining. The first two stages will be conducted in Wyoming, and the final stage in Saskatchewan, Canada.
American Rare Earths will process ore already mined from the Halleck Creek deposit and stored in Laramie, Wyoming. The grinding and classification stage will be handled by the Western Research Institute (WRI) in Laramie, a non-profit research institute focused on advanced energy systems, environmental technologies, and materials development. The mineral separation and concentration stage will be executed by DISA Technologies at its facility in Casper, Wyoming. The pilot plant will utilize DISA's patented High-Pressure Slurry Ablation (HPSA) technology, which achieves selective mineral liberation at coarser particle sizes without the need for grinding media or chemical reagents. Subsequently, a GradePro reflux classifier and induced roll magnetic separators will be used for primary mineral separation and secondary concentration to produce an allanite-rich mineral concentrate for final processing.
The final stage of the pilot plant will be undertaken by the Saskatchewan Research Council (SRC) in Saskatoon. The mineral concentrate produced in Wyoming will undergo leaching, impurity removal, and oxide refining to produce high-purity separated rare earth oxides. SRC is a partner of Tetra Tech (Nasdaq: TTEK), the engineering consultant for American Rare Earths, which has been involved in mineral processing testing and engineering design for the Halleck Creek project since 2023. SRC's facility is nearly identical in process configuration to the downstream processing facility the company plans to build in Wyoming, only on a smaller scale. Data generated from the pilot activities will be used to advance the design criteria for the commercial plant and mine.
The Halleck Creek project is American Rare Earths' flagship asset and one of the largest domestic rare earth resources in the United States. The project has a JORC-compliant resource estimate of 2.63 billion tonnes at a total rare earth oxide grade of 3,292 ppm. Mark Wall, CEO of American Rare Earths, stated that the staged pilot approach significantly reduces execution risk by utilizing existing facilities, specialized operators, and equipment already installed or ordered, while preserving the strategic goal of developing a complete rare earth project in Wyoming.
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