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Infinity Lithium's positive test results support PFS at San Jose Lithium Project

The project is proposed as an integrated industrial processing facility and test work continues to confirm assumptions of the lithium hydroxide scoping study released in Q4 2018.

Laboratory tests
Test work on San Jose product at an ALS laboratory

Infinity Lithium Corporation Limited (ASX:INF) has received further positive test work results which underpin the positive pre-feasibility study (PFS) at the San Jose Lithium Project in Spain.

Following previous tests in April 2019 which confirmed the beneficiation process from mined material to upgraded process plant feed material, test work is nearing completion.

Recent results exhibited ‘good’ lithium leachability and the lithium-bearing solution is now undergoing precipitation, recirculation, sulphate recovery and production testing.

READ: Infinity Lithium confirms industry and government support for San Jose as it nears PFS completion

Summary process flow sheet

Work undertaken at ALS laboratories and managed by Wave International provided support for the previous roast recovery, retention time and sulphate addition estimates used in the San Jose lithium hydroxide scoping study.

In parallel, Snowden Mining Consultants are working on a revised mining schedule, which is expected to benefit from improvements announced in pit slope geotechnical angles in May 2018.

Shear stress testing to allow optimal ‘dry stack tailings’ design and improved water recovery.

The San Jose plant and site layout coupled with civil engineering and logistical work has been modified from the original scoping study.

Further work on the dry stack tailings and water recycling has shown improvements in the volume and surface area of total land allocated to the storage of tailings from beneficiation and roast leach material.

These improvements could potentially result in smaller surface area of disturbance and recapture of water contained in tails for processing, reducing the already low annual water balance for the integrated industrial project at San Jose.

READ: Infinity Lithium well placed to serve Europe’s lithium industry

Mine planning and production scheduling are underway integrating favourable geotechnical data that has been obtained but not utilised in prior optimisations.

The PFS is on track for completion next month.

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