Successful 12ktpa Rincon Evaporation&Concentration Testworks

• Successful pilot testing achieved a 4-6 times concentration of Rincon lithium brine
• Target lithium concentration of 4-5wt% achieved under continuous operations
• No technical issues like foaming, scaling, or salt precipitation observed

Argosy Minerals Limited (ASX: AGY) has successfully completed pilot-scale evaporation and concentration testing for its Rincon Lithium Project in Argentina. The testworks demonstrated that the company's Rincon lithium brine can be concentrated by approximately 4-6 times, achieving a target range of 4-5wt% lithium. The pilot testing utilized proprietary technology from an independent European technology provider, using Argosy's Rincon concentrated lithium brine obtained from the solvent extraction testworks program. The results confirmed stable performance under relevant operating conditions for potential commercial application. Key outcomes included the successful concentration of lithium brine to target levels required for downstream processing, validation of substantial water removal, and generation of critical engineering and operating data to support the Definitive Feasibility Study design, equipment sizing, and economic evaluation.