Argosy Minerals Limited (ASX:AGY)

Argosy Minerals Limited announced successful lithium chloride crystallisation testworks for its 12,000tpa Stage 1A Rincon Lithium Project in Salta Province, Argentina, confirming that the proposed crystallisation unit process is technically viable and can be designed to achieve a lithium chloride product yield of greater than 99% with little to no purge. The laboratory-scale continuous, semi-continuous and discontinuous test program, undertaken by an independent major European technology provider using lithium brine feedstock from Argosy’s earlier solvent extraction pilot campaign, validated key process steps including evaporation crystallisation, impurity rejection and solid-liquid separation, and showed that the combination of pre-concentration, NaOH treatment, solid-liquid separation and evaporation crystallisation can produce specification-grade anhydrous lithium chloride solid/crystal product. The results provide essential physical property and process design data for the crystallisation feasibility basic engineering package, scheduled for completion in October, and support the broader Definitive Feasibility Study by reducing technology risk, validating the process flowsheet and reinforcing Argosy’s staged development strategy focused initially on high-purity lithium chloride as a lower-capex, simpler and more flexible pathway toward future battery-quality lithium carbonate or hydroxide production.