Plymouth Minerals has selected the processing route to produce lithium carbonate (LC) at the San Jose lithium-tin deposit in the Extremadura region in Spain.
The project is held under a joint venture (JV) agreement with Spanish construction and engineering firm Sacyr’s subsidiary Valoriza Mineria.
Lithium will be leached into a freshwater solution before the lithium-bearing liquor is processed using evaporation, precipitation and purification to produce a refined battery-grade LC.
Under the terms of the JV, Plymouth can earn up to 75% interest in the project by completing a feasibility study within four years and spending $6m.
The deposit contains more than 1.3Mt of LC and a significant amount of indicated resources.
The JV partners intend to produce battery-grade LC by feeding into the beneficiation plant to produce 15,000t of LC per annum.
Now that the processing route has been selected, Plymouth is planning to submit a mining licence application (MLA) for the San Jose deposit in early October.
The processing cost is estimated to be between $3,600 and $4,400 a tonne of battery-grade LC.
Plymouth aims into bring the project into production to address the lithium battery demand in European markets.
San Jose is an advanced lithium project, which is hosted in lithium-mica minerals.
It has potential for high-grade zones with a reported historical foreign estimation of mineralisation of 14Mt at 0.9% Li2O for 133t contained lithium oxide at 0.75% Li2O cut off.