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Highlights:
- Brazilian Critical Minerals received a water use permit, allowing field pilot trials at the Ema rare earths project.
- Recent metallurgical testing demonstrated enhanced recoveries, strengthening the project's technical foundation.
- Data from pilot trials will contribute to refining extraction processes and improving efficiency.
Brazilian Critical Minerals (ASX:BCM) has obtained approval for a water use permit, marking a significant step forward for the Ema rare earths project. The permit, granted by the Amazonas state Environmental Protection Institute, enables field pilot trials to assess the permeability of rare earth-bearing clays. This testing phase is expected to provide critical insights into how the clays interact with extraction processes.
The trials will include hydraulic modeling to study residual chemistry post-extraction, forming a key component of ongoing research. Information from this phase will play a crucial role in shaping the next stage of development.
Advancements in Metallurgical Testing
Testing conducted at the Australian Nuclear Science & Technology Organisation has demonstrated improved metallurgical recoveries, reinforcing confidence in the project's extraction methodology. Previous studies have already indicated favorable permeability characteristics in the weathered clay deposits, a crucial factor in efficient rare earth recovery.
Results from both field and laboratory tests continue to refine the technical understanding of the deposit. The work carried out so far suggests a promising outlook for developing a streamlined extraction system tailored to the geological conditions at Ema.
Field Trial Implementation
WSP Brazil has been engaged to oversee the execution of the pilot trials, ensuring data collection meets industry standards. The fieldwork includes infrastructure setup and autonomous operation over several months. Wellfield drilling has already been completed, and procurement efforts for specialized equipment are in progress.
A key focus of the trial is the comprehensive washing of the weathered profile, an essential step in gathering environmental data required for further permitting processes. The trial is expected to commence in the second quarter of the upcoming year.
Project Scale and Future Work
The Ema project is characterized by a large deposit of ionic adsorption clay-hosted rare earths, positioning it as a potentially cost-effective source of these critical materials. The scoping study outlined cost metrics that align with industry benchmarks, reinforcing the project's economic viability.
With metallurgical testing yielding higher recoveries for key rare earth oxides, ongoing pilot trials will further refine the extraction system. Data from this phase will support the development of a tailored processing strategy to optimize efficiency.
During a recent discussion, the company's managing director highlighted the project's attributes, emphasizing its low capital and operational costs. As work progresses, these efforts contribute to advancing a well-structured rare earths operation in Brazil.
