Argosy Minerals’ Rincon pilot testworks achieve 99% lithium purity

• Positive results from two phases of pilot plant test works, with lithium chloride purity of 99% and lithium recovery achieved.
• Pilot-scale technical validation delivers robust industrial design base.
• Pre-concentrated lithium brine used for test works program.

Argosy Minerals (ASX:AGY) is accelerating development of the 12,000 tonnes per annum Rincon lithium project in Argentina after obtaining positive results from process test works, progressing key engineering and feasibility works toward completing the definitive feasibility study (DFS).

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The critical flowsheet and technology selection process is being developed and validated through comprehensive test programs. Recent tests included continuous pilot-scale operations to verify lithium purity, yield, and operational stability.

The company’s concentrated lithium brine was utilised to successfully produce a high-purity lithium chloride concentrate using the designated process technology.

Test work results achieved a lithium chloride purity of 99% and a maximum lithium yield of 94.4%, with the lithium concentrations in the eluate being above the targets set for the test works. In addition, the test works confirmed sufficient stability for LiCl production with promising productivity and quality indicators.

MD, Jerko Zuvela, said the tests confirm feasibility of the process technology and clear potential for industrial scaling, with results verifying that a longer operation time simultaneously improves system recovery, purity and stability.

“We are very pleased with the successful progress towards completing the DFS, with the positive test works and results confirming 99% lithium chloride purity providing a strong platform for the continued progress of the engineering and feasibility works currently being conducted,” he said today.

“These encouraging test works and results are another significant milestone for completing all necessary works towards the full development of our Rincon lithium project.

“Strategically, with the positive technical results achieved, this positions the process at a stage where a robust industrial design base can be targeted, where key operating and economic parameters can be further defined.”

Based on the successful test works and outcomes achieved, the engineering and process design works will now be advanced to refine project execution schedules and cost estimates for the definitive feasibility study.

The process validation and performance test works are supportive for defining the optimal path to reduce technology risk and successfully complete the definitive feasibility study to a standard that provides surety to stakeholders that the Rincon Project can be constructed and operated profitably.

AGY is steady at 6.3¢. Mkt cap $95.69M.

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