ioneer Ltd (ASX:INR) has confirmed through additional test work that high-quality lithium carbonate can be produced from its 100% owned Rhyolite Ridge Lithium-Boron Project in Nevada, US.
Analysis by an independent third-party confirmed that the key impurities in Rhyolite Ridge lithium carbonate are in-line with or less than the amounts required by customers.
Unlike lithium carbonate produced from brines, the Rhyolite Ridge lithium carbonate is very low in chloride, potassium and sodium.
Samples produced from pilot plant in Vancouver
ioneer’s managing director Bernard Rowe said: “The pilot plant has enabled us to produce high-quality lithium carbonate and boric acid using a full simulation of the commercial flowsheet.
“These independent results confirm and improve on our earlier results.
“The low levels of critical impurities in lithium carbonate produced at our Pilot Plant ensure that our product will be highly sought after by a wide range of customers.
Pilot plant test work to complete by end of November
“Optimisation of our DFS flowsheet is proceeding well and further pilot plant test work is on-track to be completed by the end of November.
“This will provide the required data for the engineering design of the processing plant and enable completion of the DFS in Q1 2020.”
The lithium carbonate samples were produced at the pilot plant operated by Kemetco in Vancouver, Canada.
Further test work currently being undertaken is expected to result in important but straightforward modifications to the DFS flowsheet which will enhance and further optimise the commercial process.
Notably, this work on process modifications will not impede the off-take and strategic partner/financing discussions that are currently underway.